Stone circles are remnants of ancient rituals and druidic lore. Most people recognize the stone rings at Stonehenge, located near Amesbury, England; which dates back to 2500 BC (around 4,525 years ago). However, numerous examples of “menhills” (standing stones) and other ancient stone arrangements can be found globally.
In fact, some of these stone monuments predate Stonehenge. For instance, the Oyyu Stone Circle in Northern Japan is estimated to be about 3,500 years old, having been discovered in 1931. Additionally, there are various Aboriginal stone circles throughout Australia; some of which may be nearly 10,000 years old.
Conversely, stone monuments are uncommon in America. Thus, in 2007, archaeologists were thrilled to uncover what seems to be a human-made stone arrangement at the bottom of Lake Michigan.
One archaeologist, Mark Holly, has since been seeking funds to drill at the site while keeping its exact location confidential to prevent disturbances.
Currently, the origin of these stones remains unclear. One theory suggests that they may indicate “driving lanes” for caribou hunting, reflecting a different study. 9,000-year-old stone arrangements found on Lake Huron would have been visible when the lanes were marked.
Lake Michigan remained dry until approximately 15,000 years ago. Therefore, these stones might have been arranged significantly earlier than those found at Lake Huron or Stonehenge.
This article addresses the inquiry by John McPherson from Ripon: “Are there any other stoneworks?”
For further questions, please email us at Question @sciencefocus.com or reach out viaFacebook, Twitter, or Instagram. (Make sure to include your name and location.)
Explore our ultimateFun fact More amazing science pages
Recent research suggests that the concealed structural weaknesses in the Yukon, Canada, may be primed to trigger a significant earthquake of at least magnitude 7.5, as outlined in the latest study.
The Tintina Fault, stretching from northeastern British Columbia to central Alaska, has been silently accumulating tension for over 12,000 years. A new investigation previously deemed relatively harmless indicates that it remains very active.
Regrettably, scientists are unable to predict when the next major quake will strike.
“Our findings indicate that the fault is active and continues to build strain,” said Dr. Theron Finley, the lead author of the study published in Geophysical Research Letters, in a statement to BBC Science Focus. “I expect it will eventually rupture again.”
The Tintina Fault is classified as a “right-lateral strike-slip fault,” where two blocks of the Earth’s crust slide horizontally past each other. If one side moves to the right during an earthquake, it’s identified as right-lateral.
Over the ages, one side of the fault has shifted approximately 430 km (270 mi), during a geological period that spanned roughly 560 to 33.9 million years ago, predominantly in the Eocene epoch.
The Tintina Fault extends 1,000 km (600 mi) from northeastern British Columbia to Alaska. – Credit: National Park Bureau
While minor earthquakes occasionally occur in the region, the Tintina Fault has generally been considered dormant.
“There have been small earthquakes in the 3-4 magnitude range detected along or near the Tintina Fault,” Finley noted. “However, nothing has strongly indicated that a larger outbreak is likely.”
This perspective changed when Finley and his team revisited the fault with advanced technology. By integrating satellite surface models with drone-mounted Light Detection and Ranging (LiDAR) data, researchers uncovered hidden seismic activity within the dense Yukon forests.
The landscape revealed cliffs associated with the fault, forming long, narrow terrains created when a quake pushed material to the surface, often collapsing in the process. These features can span dozens or even hundreds of kilometers, but are typically only a few meters tall and wide.
“In the case of the Tintina fault, these features appear as a series of intriguing mounds,” Finley stated.
By dating these surface formations, researchers determined that the fault has ruptured multiple times over the last 2.6 million years, though no significant earthquakes have occurred in the past 12,000 years.
Fortunately, the region is sparsely populated. However, if the fault does rupture, Finley cautioned that major landslides, infrastructure damage, and impacts on nearby communities would be highly probable.
“We want to emphasize that we don’t have a precise sense of how imminent an earthquake is,” he noted. “Our observations indicate it has been a long time since the last significant quake, but there’s no way to know if one is more likely in the near or distant future.”
Finley remarks that the fault has been confirmed as active, and the next step is to better estimate the frequency of large earthquakes in the area. This could help provide a more reliable timeline, even though scientists cannot accurately forecast when the next rupture may happen. Stay tuned.
“Earthquakes don’t necessarily occur on a regular basis, but they can give us a clearer understanding of how often we can expect significant events,” Finley explained. “Regardless, when the Tintina fault finally releases, it won’t be inconsequential.”
Read more:
About our experts
Theron Finley is a geologist at the Yukon Geological Survey. He recently obtained a doctorate from the University of Victoria in Canada and has conducted research on active faults in Western Canada, utilizing remote sensing, structural geology, and paleoseismology.
IE 11 is not supported. For an optimal experience, please visit a different browser.
SpaceX Launch Postponed Due to Weather
04:08
Currently Streaming
The “Prosperity” Ecosystem Discovered 30,000 Feet Below Pacific Ocean
00:48
Up Next
New Report Reveals Rising Costs Due to Weather Disasters
02:29
Fossilized Dinosaur Found Under Denver Museum’s Parking Lot
01:46
Exploring Why July 9, 2025, Is One of the Shortest Days in History
03:10
EPA Proposes to Lift Greenhouse Gas Restrictions on Power Plants
03:16
Kate the Chemist Shares Fun Science Experiments for Summer Boredom
04:34
Shark Bites Surfer’s Board, Leading to Beach Closures in California
03:08
Climbers Ascend Everest Using Controversial Xenon Gas
03:46
Australian Mother Considers “Cryogenic” Option After Untimely Loss
06:45
Underwater Volcanoes Near the Pacific Coast Erupting at Alarming Speed
02:07
Watch the Blue Origin Crew Experience Zero Gravity Upon Capsule Entry
00:49
Gayle King Not Afraid to Experience Spaceflight Risks
04:18
All-Female Crew Returns from Blue Origin Space Mission: “We Went to Space!”
01:58
Hospital Provides Second Chances for Sea Turtles
04:11
Biotech Companies Claim 13,000-Year-Extinct Wolf Has Returned
02:43
Video Shows Genetically Modified Wolf, Claims Biotech Company
00:46
Carbon-Absorbing Crops Help Offset Air Pollution
02:59
Harvard Professors Use AI to Create Digital Twins for Tutoring Experiments
03:15
SpaceX Launches FRAM2 Missions to Earth’s Poles
01:45
Researchers have identified flourishing ecosystems of clams, tubeworms, and other species more than 30,000 feet deep in the Pacific Ocean. According to findings published in the Nature Journal, these represent “the deepest and most extensive chemical synthesis-based communities recognized.” July 31, 2025
SpaceX Launch Postponed Due to Weather
04:08
Currently Streaming
Discovery of the “Prosperity” Ecosystem Deep Below the Pacific Ocean
00:48
Up Next
Report Reveals Rising Costs of Weather-Related Disasters
02:29
Fossilized Dinosaur Unearthed Beneath Denver Museum’s Parking Lot
01:46
Understanding the Shortest Recorded Day: July 9, 2025
03:10
EPA’s New Goals: Removing Greenhouse Gas Restrictions in Power Facilities
Denver – The Denver Museum, famous for its dinosaur exhibits, has unearthed fossil bones right beneath its parking lot, bringing paleontological discoveries closer to home than many anticipated.
This find originated from a drilling operation that reached over 750 feet (230 meters) deep to explore geothermal heating options at the Denver Museum of Natural Sciences.
The museum is a favorite among dinosaur lovers of all ages, where full-sized dinosaur skeletons astonish children who can barely reach their parents’ knees, especially the mighty Tyrannosaurus.
Ornithopod vertebrae discovered at a depth of 763 feet in the core excavation at City Park, located within the parking lot of the Denver Museum of Natural Sciences. Richard M Wicker/Video Denver Natural Museum AP
While this latest find may not be visually striking, the likelihood of discovering a fossil sample shaped like a hockey puck is notably low.
Museum representatives highlighted the rarity of encountering dinosaur remains, even in localized areas with a modest width of just a few inches (5 cm).
“Finding dinosaur bones in the core is akin to drilling into one of the moons. It’s like winning the Willy Wonka Factory. It’s extraordinarily uncommon,” noted James Hagerdorn, the museum’s geology curator.
Geologist James Haggadawn closing a box of core sample locks at the Denver Museum of Natural Sciences on July 9th. Thomas Paypert / AP
Museum officials mentioned that only two similar discoveries have been documented in borehole samples globally, let alone on the grounds of a dinosaur museum.
These vertebrae are believed to come from small, herbivorous dinosaurs that thrived during the late Cretaceous period, approximately 67.5 million years ago, shortly before the asteroid impacts that led to their extinction.
Fossilized plant materials were also uncovered in the vicinity of the bone.
“The animal inhabited a wetland ecosystem that was likely lush with vegetation at that time,” explained Patrick O’Connor, curator of vertebrate paleontology at the Denver Museum of Natural Sciences.
The region has long been recognized for its dinosaur discoveries, including fossils resembling Tyrannosaurus rex and Triceratops. This recent find is noted to be Denver’s deepest and oldest, according to O’Connor.
While other experts validate the findings, reactions to the discoveries have been varied.
“It’s impressive. However, it might not be scientifically groundbreaking,” commented Thomas Williamson, curator of paleontology at the Museum of Natural History in Albuquerque, New Mexico.
Williamson remarked that it’s challenging to accurately determine the species of dinosaur from the evidence found.
Yet, Erin Rack Count, the educational program director for Dinosaur Ridge, located just west of Denver, exclaimed in an email that the discovery is “absolutely legitimate and utterly fascinating!”
The fossil’s shape suggests it may belong to a duck-billed dinosaur or perhaps a tecosaurus.
Currently, the borehole fossils are on display at the Denver Museum of Natural Sciences, but there are no plans to search for additional finds beneath the parking lot.
“I wish I could dig a 763-foot (233 meters) hole in the parking lot and unearth more dinosaurs, but I don’t think it will happen because of parking constraints,” said a museum official.
Deep, resonating pulses and heartbeats are being revealed beneath East Africa, ripping the continent apart.
This unusual phenomenon is attributed to a rhythmic surge in melting mantle rocks that rise and fall beneath the Earth’s surface, as explained by recent research. Natural Earth Science. These forces are so intense that they’ve been capable of splitting Africa for millions of years, resulting in the formation of new oceans.
These geological pulses were identified in the AFAR triangle, the region where three tectonic plates (the African, Somali, and Arabian plates) converge beneath Ethiopia, Eritrea, and Djibouti. This area, known as a structural triple junction, is one of the rare locations on Earth where the crust is simultaneously pulled in three different directions.
As the plates shift, significant fissures, known as lifts, form. Here, the Earth’s crust thins until it eventually fractures. It is within these gaps that the discovery was made.
“We discovered that the mantle underneath was not stationary but rather uniformly dynamic,” said Dr. Emma Watts, a geologist at Swansea University who led the research.
To delve further, the research team gathered volcanic rock samples from the area and examined their chemical composition. What emerged was a type of “geological barcode,” showcasing a consistent pattern of chemical traits, which indicates that magma plumes have ascended over millions of years.
Geologists study layers of volcanic sediments to decipher the history of the rocks. Coset Volcano, the main Ethiopian rift. – Credit: Thomas Gernon, University of Southampton
At times, some barcodes were broader than others, hinting that the clefts channel pulse magma.
“The chemical patterns indicate that the plume behaves like a heartbeat,” stated Professor Tom Gernon, who also contributed to the study from the University of Southampton.
He elaborated that these pulses function differently based on the Earth’s crustal structure. Magma pulses can travel more freely, akin to the way blood flows through arteries along the Red Sea.
“Our findings reveal a close link between the evolution of deep mantle upwellings and the movement of the plates above,” said Derek Keir, co-author of the research at the University of Southampton.
“This significantly influences our understanding of surface volcanism, seismic activity, and continental fission.”
According to a study led by researchers at the University of Southampton, these pulses are gradually tearing apart the African continent, resulting in the formation of a new sea basin.
Variation of geochemical and geophysical properties around distant triangles. Image credit: Watts et al, doi: 10.1038/s41561-025-01717-0.
The AFAR region stands out as a unique site on Earth where three structural lifts converge: the main Ethiopian rifts, the Red Sea rifts, and the Gulf of Aden lifts.
Geologists have speculated for some time that a thermal upwelling from the mantle, commonly referred to as plumes, exists beneath this area and promotes the extension of the crust along with the formation of upcoming sea basins.
However, the details regarding the structure of this upwelling and its behavior beneath the lifting plate have remained largely unknown until now.
“Our findings indicate that the mantle below the region is uniform but not stationary; it exhibits a pulsing nature that carries a unique chemical signature,” explained Dr. Emma Watts, who led the study at the University of Southampton and is currently at Swansea University.
“These rising pulses from the partially melted mantle are directed by the overlying filling plate.”
“This insight is crucial for understanding the interaction between the Earth’s interior and its surface.”
Dr. Watts and her team collected over 130 volcanic rock samples from remote areas and significant Ethiopian rifts.
Additionally, they utilized existing data and sophisticated statistical modeling to examine the structure of the crust and mantle, along with the melts within.
Their research reveals a single asymmetric plume beneath the distant region, showcasing distinct chemical bands that recur throughout the lift system, akin to geological barcodes.
These patterns vary in spacing according to the structural conditions of each lift arm.
“The observed chemical stripes imply that the plume pulsates like a heartbeat,” remarked Professor Tom Gernon from the University of Southampton.
“These pulses seem to behave differently based on the thickness of the plate and the rate at which it is pulled apart.”
“In faster-spreading rifts like the Red Sea, the pulsation occurs more efficiently and regularly, similar to a pulse flowing through a narrow artery.”
The findings illustrate that the mantle plume beneath the distant region is dynamic, reacting to the tectonic plate above it.
Dr. Derek Kiel, a researcher at the University of Southampton and the University of Florence, stated:
“This has significant implications for interpreting processes related to surface volcanism, seismic activity, and continental splitting.”
“Our work indicates that deep mantle upwellings flow beneath the tectonic plate, concentrating volcanic activity in the thinnest areas.”
“Understanding the rate and manner of mantle flow beneath the plate is crucial for further research.”
“Collaborating with experts from various fields within the institution, as we did for this project, is vital for uncovering the processes that occur beneath the Earth’s surface and their link to recent volcanic activity,” Dr. Watts emphasized.
“It’s challenging to see the broader picture, akin to assembling a puzzle without all the pieces unless we employ diverse techniques.”
study published in the journal Natural Earth Science.
____
ej watts et al. Mantle upwelling at an afor triple junction influenced by the dynamics of the overriding plate. Nat. Geosci Published online on June 25, 2025. doi:10.1038/s41561-025-01717-0
In recent years, the desire to establish human colonies beyond Earth, whether to escape environmental issues or explore uncharted territories, has gained significant traction.
While much attention is given to proposed bases on the Moon and Mars, there’s a more challenging and lesser-known frontier much closer to home: the ocean’s depths.
This concept isn’t new. Since the 1960s, with pioneers like French oceanographer Jacques Cousteau, individuals have created and spent extended periods in aquatic habitats.
NASA has been sending teams to the Aquarius Reef Base since 2001. This research facility, located 20 meters (around 65 feet) underwater off the Florida coast, has allowed scientists, engineers, and future astronauts to live in the module for 7 to 14 days.
With advancements in technology, prolonged underwater stays may become feasible. The UK company, Deep, is leveraging this technology to design habitats for extended underwater living. But, is the technology the only challenge we face?
Above the Atmosphere, Under the Sea
Humans are quite vulnerable. We struggle without oxygen or sunlight and are not fond of extreme pressure changes. Thus, we might not be the best candidates for life at the ocean floor.
This doesn’t imply that we can’t thrive in inhospitable environments.
Since 2000, astronauts have spent significant periods aboard the International Space Station (ISS).
Several astronauts have been documented living in the ISS for over 300 consecutive days, but Valeri Polyakov holds the record, having spent 437 days aboard the Mir Space Station in Russia between 1994 and 1995.
Moreover, astronauts returning from lengthy missions often face health issues, such as reduced bone density and muscle atrophy. What does this mean for those who aim to live underwater?
The most extensive study is that of Rudiger Koch, a German aerospace engineer who lived in a capsule submerged 11 meters (36 feet) under the Caribbean Sea for 120 days between 2024 and 2025.
Rudiger Koch on the balcony of the capsule where he lived between 2024 and 2025.
Koch reported no health issues upon celebrating with champagne and cigars.
In second place is Professor Joseph Dituri, who spent 100 days studying the physical and psychological effects of living underwater in a lodge situated at the bottom of a 9-meter deep (30-foot) lagoon in Florida.
Dituri conducted daily tests during his time submerged and following his return to the surface. Notably, aside from minor setbacks, he felt quite well.
He noted improvements in sleep quality, cholesterol levels, and inflammation. His stem cell count, testosterone levels, and cognitive performance also improved.
Interestingly, Dituri appeared to have lowered his biological age (an indicator of the aging process of the body), although he was recorded as having shrunk by over 1 cm (approximately 0.5 inches) due to the pressurized environment inside the lodge.
read more:
A Step Towards Living Underwater
With limited data, we still have a tenuous understanding of life in aquatic environments. This is where Deep comes in.
The ocean technology and exploration company aims to develop two habitats by 2027, with the goal of establishing a permanent underwater presence. They are using a submerged quarry in Gloucestershire as a testing ground for their underwater habitats.
Deep is developing two habitat models: Vanguard, designed for three-person short stays, and Sentinel, a 16-meter (52-foot) capsule intended as a long-term habitat complete with living quarters, bedrooms, and research facilities, capable of accommodating researchers at depths of up to 200 meters (656 feet) for 28 days.
The aim is to enable researchers to remain submerged for extended periods, allowing for comprehensive studies of underwater living impacts and marine life. However, achieving these depths poses significant challenges.
“The most hazardous aspects of diving occur during descent,” explains Dr. Dawn Kernagis, Deep’s scientific research director. “Divers breathe compressed gas, with fluctuating pressure increasing the risk of decompression sickness (DCS), where gas bubbles form in the bloodstream.”
While most DCS cases are mild, severe instances can impact the brain, spinal cord, respiratory system, and circulatory systems.
To mitigate these risks, Deep aims to keep researchers “saturated” in the Sentinel habitats. This means achieving a new equilibrium with the underwater environment.
“Saturated tanks, like ours, facilitate diving into greater depths and adjusting to the pressure, enabling much longer stays, ranging from hours to about a month,” states Kernagis.
Deep plans for close monitoring of researchers during their stays to better understand the long-term physical and psychological effects of deep-sea living.
The foundation laid now may support future inhabitants underwater for weeks, months, or even years. In the not-so-distant future, some of us may find ourselves living in a modern-day Atlantis.
About Our Experts
Dr. Dawn Kernagis is the director of scientific research at Deep, a UK-based ocean technology and exploration firm. She has published in numerous scientific journals, including Journal of Clinical Oncology, Proceedings of the National Academy of Sciences, and Circulation.
Is this the future in a world where the oceans are rising?
Deep R&D Ltd
The Bajau are indigenous marine people of Southeast Asia, often referred to as sea nomads. For millennia, they have thrived along coastlines, relying on foraging underwater without the aid of diving gear, holding their breath for astonishing durations. Yet, the early 21st century introduced multiple crises that jeopardized their way of life—industrial overfishing, pollution, coral bleaching diminished food sources, and rising sea levels consumed coastal dwellings.
In 2035, a Bajau community near Saba, North Borneo, initiated fundraising for a contemporary floating and underwater settlement. They collaborated with deep, a manufacturer of submarine habitats, to create interconnected rafts and underwater homes, developing business models that could be emulated by other maritime communities facing similar threats from rising seas. Revenue streams included extreme adventure tourism, scientific research facilities, and longevity clinics.
The first habitat comprised a network of platforms and rafts, with tunnels leading to underwater levels. While residents occupied surface structures, they increasingly utilized submerged areas for storage, sustenance, and sleep. This habitat was constructed using a 3D printing technique known as Wire arc additive manufacturing, which allowed the most effective pressure distribution in areas experiencing strain.
The deeper sections were maintained at both ambient water pressure and the corresponding atmospheric pressure from the surface. In modules situated less than 20 meters deep, occupants, referred to as Aquanauts, inhaled a unique gas mixture to prevent nitrogen narcosis. Those exiting deep modules required decompression when returning to normal atmospheric conditions. An advantage of these surrounding modules was the incorporation of a moon door, enabling Aquanauts to swim directly into the deep sea for leisure, research, and farming activities.
Undersea hotels catering to extreme tourism have surged in popularity. In the Galapagos, tourists reside in submerged hydroelectric hotels, exploring hot springs and observing some of the planet’s rarest life forms. Simultaneously, scientists harness these modules to investigate deep-sea ecosystems. Undersea mapping technologies have evolved, enabling researchers to explore vast ocean territories that were previously unreachable, fostering understanding and interactions with whales and other deep-sea creatures, leading to significant advancements in marine biology.
Aquanauts can swim directly into the deep sea for recreational, research, and agricultural activities
The Bajau have long been adapted to marine environments. With thousands of years at sea, they possess enlarged spleens that provide a higher quantity of oxygen-retaining red blood cells compared to typical humans. Some Bajau divers can spend five hours underwater, diving freely to depths of 70 meters without oxygen tanks, holding their breath for up to 15 minutes. After transitioning to seabed habitats, many Bajau began to leave behind surface living, opting instead to spend more time submerged, even resorting to gene editing to enhance their aquatic capabilities, including intentional eardrum puncturing to facilitate deeper dives, and utilizing surfactants in their lungs to aid their decompression, akin to adaptations found in diving marine mammals.
Bajau’s Diver
Marco Rayman/Alamie
Numerous communities have established depth clinical treatments. Previous research has demonstrated that exposure to intermittent daily sessions of pressurized oxygen therapy can alleviate various medical conditions and age-related diseases. Hyperbaric oxygen therapy, for instance, has proven beneficial, leading individuals who underwent consistent high-pressure sessions to possess longer telomeres and enhanced clearance of senescent cells, both of which are linked to increased longevity. The deep habitat has attracted affluent seniors looking to extend their lives, simultaneously providing a lucrative income source.
The majority of marine communities have become self-sufficient, cultivating their own food through aquaculture of fish, mollusks, and seaweed, while also growing other crops on the surface. Energy sources include a combination of solar, wind, wave, and geothermal energy, tailored to local conditions. Some communities focus on tourism, whereas others specialize in carbon capture within medical facilities. A significant amount of seaweed is harvested, sunk into the ocean depths, and sold as carbon credits.
Living beneath the waves isn’t for everyone. Nonetheless, these habitats empower those most vulnerable to climate change, giving them the tools to redefine their livelihoods and lifestyles, even in the face of rising sea levels that threaten their homes.
Rowan Hooper is the podcast editor for New Scientist and author of *How to Spend $1 Trillion: These are 10 Global Issues That Can Be Actually Fixed*. Follow him on Bluesky @rowhoop.bsky.social
Sure! Here’s the rewritten content while retaining the HTML tags:
Below the western United States lies a significant, untapped source of clean energy. According to the US Geological Survey (USGS), this potential is substantial.
This research is part of a long-term initiative to chart the nation’s geothermal capabilities, particularly focusing on the expansive basin regions that encompass Nevada, Utah, California, Idaho, Oregon, and Wyoming.
USGS projects that these geologically active states hold the potential to generate reliable and consistent geothermal energy of up to 135 gigawatts, provided new technologies can harness this underground resource. To put this in perspective, the typical U.S. household consumes about 1 kilowatt of electricity continuously, meaning that 135 gigawatts can fulfill the stable energy demands of nearly 135 million homes.
“The evaluation of USGS energy resources is geared towards the future,” stated Dr. Sarah Ryker, the acting director of USGS. “We emphasize undiscovered resources that have yet to be fully explored and developed, starting our work in the Great Basin due to its geothermal activity history.”
Currently, geothermal energy comprises less than 1% of the electricity in the U.S., predominantly sourced from conventional hydrothermal systems, where naturally heated water rises through permeable rocks.
Nonetheless, USGS findings suggest a much richer energy reservoir exists. This indicates that heat is trapped in dense, impermeable rock formations buried deep underground.
Geothermal systems generate electricity by circulating and heating liquids – USGS
To access these “enhanced geothermal systems” (EGS), engineers must drill deeper, sometimes reaching depths over 6 km (3.7 miles), fracturing the rock to allow water to circulate and capture heat.
This heated water can then be raised back to the surface to produce electricity, offering a constant, weather-independent energy source.
To estimate the potential energy available, USGS researchers have combined underground temperature maps, heat flow data, and sophisticated techniques for measuring extraction efficiency and energy conversion. They collaborated with the US Department of Energy (DOE), state geological surveys, and academic institutions nationwide.
Dr. Ryker stressed that this research offers a multitude of benefits beyond just energy generation. “Natural resources play a vital role in sustaining the national economy, and historically, we have advanced the technology for mapping and characterizing these resources.”
The large basins of Nevada and surrounding states showcase potential geothermal energy, indicated by colors ranging from green to red – USGS
However, advancing EGS technology presents substantial challenges. Although pilot projects have shown promise within the Great Basin, commercial-scale fortified geothermal plants are not yet operational in the U.S.
One of the primary hurdles is cost, which the U.S. Department of Energy aims to address through the Enhanced Geothermal Shot™, a program targeting a 90% reduction in technological costs by 2035.
The USGS’s efforts are not limited to the Great Basin. The agency plans to shift its focus to the Williston Basin in North Dakota, another region that may hold geothermal potential.
Should these efforts succeed, geothermal energy could emerge as a crucial component of America’s low-carbon future.
Could there be hydrogen under Mount Grison in Switzerland?
Thomas Stoyber/Alamie
Mountain ranges may serve as a significant source of clean energy in the form of unexplored hydrogen. Previous investigations hinted at the presence of “geological” hydrogen underground, but researchers have now pointed to mountains as potential reservoirs.
“Some minerals can react with water to produce hydrogen, serving as a source of sustainable green energy,” explains Frank Zwarn from the Helmholtz Geoscience Centre in Germany.
While a plethora of minerals exists on Earth, most are located at great depths in the mantle. However, during the formation and elevation of mountain ranges, certain mantle materials can be brought nearer to the surface, where they might interact with water through a process called meandering.
To understand the potential for hydrogen generation, Zwaan and his team modeled the uplift process and assessed the mantle material reaching areas with optimal temperatures and adequate circulating water for this reaction to occur. Their findings support the notion that large quantities of hydrogen could form below these mountains.
Serpentine minerals also exist in the ridges of the Central Sea, which some speculate may have played a role in the origin of life. However, Zwaan notes that the hydrogen created there is unlikely to remain trapped due to temperatures below 122°C (252°F), as bacteria can consume the trapped hydrogen. In contrast, it can be drilled from deeper areas of higher temperature below the mountains.
“I wouldn’t want to inhabit that area, but it’s ideal for preserving hydrogen,” Zwaan stated at the European Geoscience Union conference in Vienna last week. “There may be an additional opportunity to drill into what is known as a hydrogen kitchen, the zone where hydrogen is generated.”
The model’s outcomes are corroborated by preliminary findings from studies on various mountain ranges. For instance, Gianreto Manatschal from the University of Strasbourg in France confirmed evidence of hydrogen production beneath the Grison region of the Swiss Alps. However, he emphasized that there remains much to learn. “Our research is merely the beginning,” he remarked.
Notably, some hydrogen has been reported to be seeping from beneath the Northern Pyrenees, according to Alexandra Robert at the University of Toulouse, France. This research is still in its formative stages.
This article forms part of the museum’s special feature on how artists and institutions are evolving in response to a changing world.
“Super/Natural”—an immersive, dome-shaped stained glass artwork by Judith Schaechter—truly comes to life from within.
Entering through the small portal, one is enveloped by vibrant glows of birds, stars, insects, and fantastical plants and roots in optimal lighting. Earlier this year, I had the chance to experience it firsthand in Schaechter’s home studio, and I felt a unique blend of serenity and admiration.
This evokes a thoughtful design. Such illumination profoundly affects human emotions, a truth acknowledged by medieval architects and glass artisans centuries ago.
“I’m not particularly religious, but it’s hard not to feel a sense of reverence and awe when stepping into the dome,” noted Chief Curator Laura Turner Igo. The James A. Michener Museum in Doylestown, Pennsylvania, currently features nine glass panels and two related drawings that delve into the eight-foot-tall artwork and our connection to the universe. The exhibition, Super/Natural, opened on April 12th and extends through September 14th.
“You’re enveloped by a riot of plants, insects, and birds,” Igo explained. “Skeletons and bones are present, representing both the splendor of life and the interconnectedness of death and decay. It’s beautiful yet slightly unnerving.”
Schaechter created this exquisite piece during her recent tenure as an artist-in-residence at the Penn Neurotherapy Center in Philadelphia, situated about 40 miles from Michener. The center was on her radar due to her interest in literature regarding the science of consciousness and beauty, often referred to as the “aesthetic brain.” I will oversee the center’s various activities.
When Schaechter reached out a few years back, she found that the center frequently hosts artists, and the timing coincided with the end of the current residents’ term. Excitedly, she volunteered for the next opportunity.
Upon arrival, she aimed to create an immersive experience that positions humans at the center of a “three-layer cosmos,” as she described in a video interview. The resulting structure serves as a serene and enigmatic sanctuary.
Dr. Chatterjee remarked that he wasn’t surprised by the emotional impact of Schaechter’s work. “Usually, feelings of reverence arise in the presence of vastness, making individuals feel small and connected to something greater,” he mentioned in an email interview. “The brain’s network that triggers contemplation and rewards likely gets activated. This can lead to the release of endogenous endorphins related to transcendence, as well as the pleasant emotions of oxytocin associated with connection.”
Schaechter began her BFA at the Rhode Island School of Design in 1983 and was recently honored with the 2024 Smithsonian Visionary Award. She is represented by the Claire Oliver Gallery, and her works are part of collections at both the Philadelphia Museum and the Victoria and Albert Museum in London.
“No one works in glass quite like Judith,” Igo said. She recounted her recent visit to the Met, where she viewed “Garden Landscape,” a three-part stained glass window crafted by Agnes Northrop at Louis Comfort Tiffany’s studio. “Such artworks likely share the immersive quality and technique of ‘Super/Natural,'” she noted, referencing Maxfield Parrish’s “Dream Garden.”
“Of course, Northrop’s work was produced by a larger studio, while Judith meticulously crafted every piece for ‘Super/Natural,'” she added.
Last month, Schaechter discussed her work in a video interview from a beautifully restored 19th-century row house in Philadelphia. The conversation was edited for clarity and brevity.
What artistic goals did you set during your residency at the Penn Neuroaesthetics Center?
They focus on three core themes: beauty and morality, the built environment and wellness, and the relationship with art.
I aimed to undertake a project that confronted issues of beauty and morality, yet I yearned for artistic inspiration. At the onset of my residency, I delved into natural history illustrations, particularly those created by women, which had been one of the few acceptable art forms for women in the 17th and 18th centuries. I found Maria Sibilla Merian’s work particularly inspiring. These artists aimed to render nature objectively, yet their work often appeared more artistic than scientific. I sought to explore this intersection.
What is your experience like at the center?
The atmosphere is fascinating, accommodating around 15 individuals at any time. There are undergraduate students, many of whom are pursuing dual majors in artistic disciplines like architecture and fine art. There is also a medical student focused on plastic surgery who is keen on aesthetics for evident reasons. Weekly lab meetings gather everyone to share project updates, including both Dr. Chatterjee and myself.
Reflecting on my experience in “Super/Natural,” why do you believe glass, particularly the way it interacts with light, evokes such a sense of awe?
I think it has a biological basis. We have an inherent physical response to light, particularly when it’s refracted through glass. Colored light holds a certain magic; it isn’t simply perceived as absence. Most artworks are intended to be appreciated in reflected light since, as humans, we aren’t designed to gaze directly at the sun. Thus, the role of stained glass artists is to modulate that light, rendering it visible.
It’s as though you can reach out and touch the light; glass lets you momentarily grasp something ethereal.
Indeed, people are captivated by radiant light. Just think of how someone might place an empty vodka bottle in a kitchen window to catch the light. It doesn’t always have to be extravagant to be appreciated. There lies an extraordinary resonance in that experience.
What do you hope visitors take away from their experience with your work?
I aim to spark inspiration in others. Everything crafted within the dome emanates from my imagination.
I am immensely grateful for advancing technology, which allows me to explore the craft field within the dome without negating the human touch. However, I feel that many become enamored by technology and overlook the extraordinary power of our own hands and intellect. So while working on the dome, I relied on few reference materials; at 64, my mental repository is rich with experiences and knowledge.
The magma reservoir under the cascade range has a different depth, size, and complexity, but the upper magma body is spread, according to the Global Scientist’s team at Cornell University and Cascade Volcano Observatory.
Mountleinia. Image credit: Walter Siegmund / CC by-Sa 3.0.
The visible lava on the surface is an obvious indicator of the activity, but the long-standing beliefs are expelled during the eruption of active volcanoes, and there are large magma body that breaks down over time as the volcano becomes dormant. That is.
But A New study It is published in the journal Natural global science Challenge this assumption.
The study author has identified the magma chamber under the six volcanoes, six volcanoes of various sizes within the cascade range and six volcanoes.
They discovered that all of the volcanoes, including dormant state, have a sustainable and large magma body.
Given that some of these volcanoes, such as Lake Lake in Oregon, have not been active for thousands of years, the results are surprising.
“Regardless of the frequency of eruptions, you can see a large magma under a lot of volcanoes,” said Dr. Guaning Pan, a researcher at Cornel University.
“These magma bodies seem to be not only active, but also under volcanoes for a lifetime.”
The fact that more volcanoes maintain a magma body is an important consideration on how researchers monitor and predict future volcanic activities.
“We thought that if we found a large amount of magma, we thought it would increase the potential of eruptions, but now we change the perception that this is the baseline situation,” said Dr. Pan. Ta.
The result suggests that the eruption does not completely discharge the magma chamber, indicating that it eliminates excessive amounts and pressure instead.
The chamber can gradually solve the crust, so it can be slowly expanded and replenished over time.
“With a general understanding of where the magma is, I was able to do a good job rather than optimizing monitoring,” said Professor Jeffrey Aberters of Cornell University.
“There are many volcanoes that are sparse or not intensive research.”
______
G. bread et al。 Partial melting long life under the volcano in the cascade range. nut. GeosciReleased online on January 23, 2025. Doi: 10.1038/S41561-024-01630-Y
Melting ice in the Rocky Mountains has led to the discovery of a 5,900-year-old white bark pine forest. Scientists discovered more than 30 trees during an archaeological survey on Wyoming's Beartooth Plateau at about 3,100 meters above sea level, 180 meters above the current tree line.
This, he says, “allows us to learn about past conditions at high altitudes.'' Kathy Whitlock at Montana State University. Japanese white pine (Albicari pine) These plants needed to grow during warmer weather, she says, because they don't currently grow at this elevation.
To understand the history of the lost forests, Whitlock's team analyzed tree rings and used carbon dating to find out how old the forests were. They discovered that the tree lived between 5,950 and 5,440 years ago, a time when temperatures were steadily dropping.
Data from ice cores in places like Antarctica and Greenland suggest that these temperature drops were influenced by centuries of volcanic eruptions in the Northern Hemisphere. These produced enough aerial deposits to block sunlight and lower global temperatures until the environment became too cold for these high-altitude trees to survive.
Although the newly discovered tree was lying flat, it was in exceptional condition, indicating that it was rapidly preserved after death. Although there is no evidence of avalanche cover, there are traces consistent with the current expansion of the ice sheet.
Climate models suggest that more continuous volcanic eruptions occurred in Iceland 5,100 years ago, causing further temperature drops, team members say Joe McConnell at the Desert Research Institute in Nevada. These temperature drops led to the expansion of the ice belt, and “the fallen trees were buried in the ice and protected from the elements for the next 5,000 years,” he says.
Only in recent decades have temperatures warmed enough to free trees from their ice cellars. The current tree line is “likely to shift upward as temperatures rise in the coming decades,” Whitlock said.
“This discovery was made possible thanks to anthropogenic climate change. Rising temperatures are exposing areas that have been buried under ice for thousands of years,” she says. “While discoveries like this are scientifically interesting, they are also a sad reminder of how vulnerable alpine ecosystems are to climate change.”
“This study is a very elegant and careful use of a rare 'time capsule' that tells us not only about these mountain forests 6,000 years ago, but also about the climatic conditions that allowed them to exist.” '' he says. Kevin Antukaitis at the University of Arizona.
These trees are not the first such finds that researchers have unearthed from Rocky Mountain ice. Previous research had found “fragments of wooden shafts used for arrows and darts,” Whitlock said. One of the shafts has been radiocarbon dated to be more than 10,000 years old, “which tells us that people have been hunting in high-altitude environments for thousands of years,” she says.
The issue of energy consumption and its sources has always been a significant concern in the context of the climate crisis. In response, efforts are being made to utilize cleaner and newer fuels. Recently, a groundbreaking discovery of vast reservoirs of hydrogen energy hiding beneath the Earth’s surface has emerged, prompting questions about its potential impact.
Naturally occurring geological hydrogen is formed through Earth’s geochemical processes and has been identified in limited locations such as Albania and Mali. Research published in the journal Scientific Progress suggests that these reserves are widespread globally.
The study posits that if just 2 percent of the underground hydrogen could be extracted, it could yield 1.4 × 10^16 Joules of energy, equivalent to the world population’s energy consumption in 35 minutes. This amount of energy exceeds that of all natural gas reserves on Earth and could aid in achieving net-zero carbon goals.
While current methods for obtaining hydrogen involve fossil fuels or water-intensive electrolysis processes with a carbon footprint, extracting geological hydrogen is a comparatively low-carbon process, albeit currently practiced only in Mali.
Researchers at the U.S. Geological Survey have developed a model combining knowledge of hydrogen occurrence and geological data to explore these reservoirs on a global scale, estimating a substantial amount of hidden hydrogen beneath the Earth’s surface.
However, experts are hesitant about committing resources to extraction due to the scale and infrastructure required, as highlighted by geoscientist Professor Bill McGuire from University College London (UCL). He emphasizes the abundance of renewable energy sources like wind and solar and questions the necessity of tapping into another finite resource.
About our experts
Professor Bill McGuire is a volcanologist, climatologist, and author currently serving as Professor of Geophysics and Climate Hazards at UCL. His works include books on natural disasters, environmental change, and climate solutions.
Flooding is a common occurrence in the cities of Navotas and Malabon, located in densely populated areas north of Metro Manila in the Philippines.
These cities have adapted to the constant threat of floods. For example, the iconic jeepney vehicles are now made of stainless steel to prevent corrosion from seawater. Additionally, roads have been continuously elevated, reaching heights higher than people’s doors in some areas.
“They keep raising the roads higher and higher, and it’s a challenge to sustain this,” says Dr. Mahal Ragmay, Executive Director of the University of the Philippines Resilience Institute.
The struggle to combat floods in these cities is not just due to rising sea levels, but also to the lowering of the ground level. A study led by Lagmay and his team revealed that parts of Metro Manila sank by 10.6 centimeters (4.2 inches) per year between 2014 and 2020, significantly higher than the global average sea level rise.
This rapid decline has been a growing concern, especially in certain coastal areas around Manila Bay where floods have left half of the houses submerged, forcing rice farmers to turn to fishing for their livelihood.
Similar subsidence issues are observed in various highly urbanized regions worldwide, as highlighted by land subsidence expert Dr. Matt Way, who studies urban subsidence on a global scale.
The Impact of Land Subsidence
Subsidence measurements are now conducted using advanced technologies like satellite data, allowing researchers to make more accurate estimates of ground movement. With tools like GNSS and InSAR, scientists can track ground movement in 3D at specific points, providing detailed insights into subsidence patterns.
By analyzing subsidence data from various cities globally, researchers have found that many urban areas are experiencing significant sinking rates, posing a threat to millions of people.
Causes of Subsidence
Tighter regulations on groundwater extraction have slowed Jakarta’s sinking rate, but flooding still occurs – Credit: BAY ISMOYO
Subsidence in cities like New York and Manila has various causes, including post-glacial rebound and human activities like excessive groundwater pumping. While natural phenomena like seismic faults contribute to ground movements, human interventions play a significant role in accelerating subsidence rates.
Addressing subsidence requires a multi-faceted approach, from regulating groundwater extraction to monitoring and mitigating the impact of sinking urban areas.
Mitigating Urban Subsidence
Cities like Jakarta, Tokyo, and Houston have made strides in slowing subsidence rates by implementing stricter water regulations and alternative water supply solutions. In Manila, efforts to ban deep well drilling and reduce reliance on groundwater are underway to address subsidence issues.
While some areas may face relocation due to flooding and sinking, careful management of groundwater resources and proactive monitoring can help cities bounce back from subsidence challenges.
About our experts
Dr. Matt Way is an expert in oceanography and studies natural disasters and crustal geodesy at the University of Rhode Island.
Dr. Mahal Lagmay is the Executive Director of the University of the Philippines Resilience Institute, focusing on projects related to flooding and groundwater management in the Philippines.
On Earth, solar radiation can travel up to several meters into the ice, depending on its optical properties. Organisms in the ice can harness the energy from photosynthetically active radiation while being protected from harmful ultraviolet radiation. On Mars, there is no effective ozone shield, so about 30% more harmful ultraviolet radiation reaches the surface compared to Earth. However, a new study shows that despite strong surface UV radiation, mid-latitude ice on Mars contains 0.01-0.1% dust, ranging from a few centimeters deep to several centimeters deep. It has been shown that a radioactive habitable zone exists with a range of up to 3000 m. Cleaner ice.
The white edges along these canyons on Mars' Terra Sirenum are thought to be dusty water ice. cooler others. It is thought that melt water could form beneath the surface of this type of ice, providing a potential site for photosynthesis. Image credit: NASA / JPL-Caltech / University of Arizona.
“Today, if we are trying to find life anywhere in the universe, the icy outcrops on Mars are probably one of the most accessible places we should look,” said a researcher at NASA's Jet Propulsion Laboratory. said Dr. Aditya Kuler.
Mars has two types of ice: frozen water and frozen carbon dioxide.
Dr. Cooler and his colleagues investigated water ice. The ice masses were formed from snow mixed with dust that fell on Mars during a series of ice ages over the past million years.
That ancient snow has since solidified into ice and is still dusted with dust.
Dust particles can block light in deeper layers of ice, but they are the key to explaining how underground pools of water form within the ice when exposed to the sun.
The black dust absorbs more sunlight than the surrounding ice, causing the ice to warm and potentially melt several feet below the surface.
Mars scientists are divided on whether ice actually melts when exposed to the Martian surface.
It's thought to be caused by the planet's thin, dry atmosphere, where water ice sublimates and turns directly into gas, similar to dry ice on Earth.
But the atmospheric effects that make melting difficult on Mars' surface don't apply beneath the surface of dusty snowpack and glaciers.
On Earth, dust in ice can create what are called cryoconite holes. This is a small cavity that forms in the ice when windblown dust particles (called cryoconite) land there, absorb sunlight, and melt deep into the ice each summer. is.
Eventually, these dust particles stop sinking as they move away from the sun's rays, but they still generate enough heat to create pockets of melted water around them.
This pocket can foster a thriving ecosystem of simple organisms.
“This is a common phenomenon on Earth,” says Arizona State University researcher Phil Christensen.
“Rather than melting from the top down, thick snow and ice melts from the inside out, letting in sunlight that warms it like a greenhouse.”
In 2021, the authors discovered powdery water ice exposed inside canyons on Mars and proposed that many canyons on Mars are formed by erosion as ice melts into liquid water.
Their new paper suggests that powdery ice lets in enough light for photosynthesis to occur as deep as 3 meters (9 feet) below the surface.
In this scenario, the upper layer of ice prevents shallow underground pools of water from evaporating, while also protecting them from harmful radiation.
This is important because, unlike Earth, Mars does not have a protective magnetic field to protect it from both the Sun and radioactive cosmic ray particles flying through space.
“Water ice most likely to form underground pools would exist in tropical regions of Mars between 30 and 60 degrees latitude, in both the northern and southern hemispheres,” the researchers said.
of paper appear in the diary Communication Earth and Environment.
_____
AR cruller others. 2024. Possibility of photosynthesis on Mars in snow and ice. common global environment 5,583;doi: 10.1038/s43247-024-01730-y
This article is a version of a press release provided by NASA.
The veil of mystery surrounding the Treasury Monument in Petra, Jordan has been lifted once again.
Beneath an ancient building carved out of rock, archaeologists discovered a hidden tomb containing 12 relatively well-preserved human bones and a vast array of grave offerings.
A similar tomb was discovered more than 20 years ago opposite the famous Treasury Building, also known as Al-Khazneh, one of the Seven Wonders of the World and a UNESCO World Heritage Site.
Earlier this year, a team of researchers received permission from Jordanian authorities to conduct a week of remote sensing in and around the Treasury, a city center hand-carved into the walls of a desert canyon by the Nabatean people.
“There was always the idea that there might be more graves, but no one has yet been found,” Richard Bates, a geophysicist and professor at the University of St. Andrews in Scotland, said in an email. “The hope was to find an intact grave.”
A joint Jordanian-American team, which also included the Jordanian Department of Antiquities and the Amman-based nonprofit American Research Center, used ground-penetrating radar to detect the cavity and pinpoint its location and depth. Instead of digging straight through, which would have cut through solid rock and damaged parts of the building, Bates said they carefully dug by hand into the cavity from the outside.
Richard Bates. Excavation at the Treasury. Kindly provided by Professor Richard Bates, University of St Andrews
Inside, in the original burial site, are 12 human bones, one of which is clutching the top of a broken pitcher, most likely dating from the 1st century BC. Bates said the bodies likely included both men and women and ranged in age from children to adults. Although that is not confirmed yet.
“No complete burial has ever been found here before, so this discovery could potentially tell us more about the Nabataean kingdom,” Bates said.
The discovery could also provide new insights into the Treasury itself, whose purpose is still unknown.
“Despite its fame, the Treasury Department remains a mystery to us in many ways,” Pierce Paul Creesman, director of the Center for American Studies, said in an email. “Anything we can do to understand it more deeply is important.”
Visited by more than 1 million visitors a year, the Treasury is the most famous of Petra’s iconic monuments. In Steven Spielberg’s 1989 film Indiana Jones and the Last Crusade, it was featured as the resting place of the Holy Grail in the film.
The newly uncovered tomb excavation was featured in a two-part episode of the American reality television series Expedition Unknown, which aired on the Discovery Channel.
Bates said there are signs of other cavities in the area that could be graves.
“It’s very likely that more will be discovered, so we need to get the funding back and continue the research,” he said.
Marine biologists have discovered adult tubeworms and other extrusive animals beneath the ocean floor of the East Pacific Ridge, a volcanically active and rapidly spreading ridge with numerous hydrothermal vents.
East Pacific Rise, subseafloor vents on the seafloor surface and crust on the outskirts of Fava Flow. Image credit: Bright others., doi: 10.1038/s41467-024-52631-9.
The East Pacific Rise is a volcanically active ridge located where two plates meet at the floor of the Pacific Ocean.
It contains many hydrothermal vents, which are openings in the ocean floor that form where ocean water and magma meet beneath the Earth's crust.
“It was once thought that the ocean-floor crust beneath hydrothermal vents was inhabited only by microorganisms and viruses,” says researcher Monika Breit of the University of Vienna and colleagues.
“But there are animals on the ocean floor that look like giant tube worms. Liftia Pachyputira Thrive. “
“The larvae are thought to disperse into the water column, even though they have never been observed there.”
“We hypothesized that these larvae migrate beneath the ocean floor via vent fluids.”
Dr. Bright and his co-authors sailing on the Schmidt Oceanographic Research Vessel Falcor (also)used the remotely operated vehicle SuB-astian to undertake a series of dives into a hydrothermal vent site located at a depth of 2,515 meters in the East Pacific Ridge.
The vehicle's arm was used to expose part of the ocean's crust, which revealed a warm, warm habitat that is home to a variety of species previously found only on the ocean floor, including giant tube worms and migratory animals such as earthworms and snails. A fluid-filled cavity was revealed.
Larvae from seafloor communities can colonize these subseafloor habitats, demonstrating the complex connectivity between seafloor and subseafloor ecosystems.
An animal habitat has been discovered beneath the ocean floor of the Earth's crust, but its extent is currently unknown, raising the urgency of its protection against potential future environmental changes.
“The presence of adult tubeworms suggests that the larvae dispersed through the recharge zone of the hydrothermal circulation system,” the authors said.
“Given that many of these animals are hosts to dense bacterial communities that oxidize reduced chemicals and fix carbon, subseafloor expansion of animal habitats may be localized. and regional geochemical flux measurements.”
“These findings highlight the need to protect vents, as the extent of these habitats has not yet been fully determined.”
team's work appear in the diary nature communications.
_____
M. Bright others. 2024. Animals that live in the crust beneath the shallow ocean floor of deep-sea hydrothermal vents. Nat Commune 15, 8466; doi: 10.1038/s41467-024-52631-9
There is a possibility that Gray Whale could become the next Olympic champion if it surpasses Simone Biles. This speculation comes from a recent study that captured animals performing impressive acrobatic movements underwater, including headstands.
The spectacular ocean gymnastics were documented as part of a seven-year research project, during which scientists utilized drones to study pods of 200 gray whales along the coasts of Oregon, Washington, northern California, and southern Canada.
The findings of the study were published in new research results in the journal animal behavior. The research revealed that whales perform handstands by pressing their mouths against the ocean floor while foraging for food. The scientists also observed the whales moving their flippers in a sweeping motion, similar to synchronized swimmers.
A particularly endearing moment captured by the drones was that of a baby whale attempting, unsuccessfully, to perform a handstand, indicating that this behavior is learned with age.
According to Clara Bird, a study author at Oregon State University, “Our findings suggest that this handstand behavior requires strength and coordination.”
Drone footage of a whale (the whale above this image) doing a headstand. – Photo credit: Oregon State University GEMM Lab.
In addition to these remarkable acrobatic displays, the drone footage also captured the gray whale performing a “bubble blast,” where the whale releases air underwater to create a large circular pattern on the water’s surface.
In a second study published in ecology and evolution, scientists discovered that the bubble blast aids whales in feeding longer, especially in shallow waters.
Bird explained, “It’s similar to when we dive underwater. Releasing air from our lungs helps us stay submerged without battling the force that pushes us back to the surface.”
The research indicates that larger, fatter whales are more likely to perform bubble blasts, particularly while doing handstands. These findings underscore the importance of whale size in feeding behavior.
For more information, check out the full articles linked above.
According to a team of geoscientists from the University of Maryland and the University of Maryland, between 250 million and 120 million years ago during the Mesozoic Era, the ancient ocean floor was formed by the East Pacific Rise, a plate boundary at the bottom of the southeastern Pacific Ocean. It is said to have sunk deep into the earth. University of Alberta.
A map of the East Pacific Ridge region where the ancient ocean floor was discovered. Image credit: Jingchuan Wang.
University of Maryland researcher Jingchuan Wang and his colleagues used innovative seismic imaging techniques to look deep into the Earth's mantle, the layer between the Earth's crust and core.
They discovered an unusually thick region in the mantle transition zone at depths of about 410 to 660 km below the Earth's surface.
This zone separates the upper and lower mantle and expands or contracts depending on temperature.
The newly discovered ocean floor may also explain the unusual structure of the Pacific Large Low Shear Velocity Province (LLSVP), a huge region in Earth's lower mantle. Because LLSVP appears to be divided by slabs.
“This thickened area is like a fossil fingerprint of an ancient ocean floor that sank into the Earth about 250 million years ago,” Wang said.
“This gives us a glimpse into Earth's past that we've never seen before.”
Subduction occurs when one tectonic plate slides beneath another and surface material is recycled into the Earth's mantle.
This process often leaves behind visible evidence of movement, such as volcanoes, earthquakes, and deep ocean trenches.
Geologists, on the other hand, typically study subduction by examining rock samples and sediments found at the Earth's surface.
By studying how seismic waves travel through the different layers of the Earth, researchers were able to create a detailed map of the structures hidden deep within the mantle.
“You can think of seismic imaging as similar to a CT scan. Essentially, it allows us to see a cross-section of the Earth's interior,” Dr. Wang said. .
“Typically, chunks of ocean material are completely consumed by the Earth, leaving no discernible traces on the surface.”
“But looking at ancient subducted slabs through this perspective has provided new insights into the relationship between the Earth's very deep structures and surface geology that were not previously clear.”
What the authors discovered surprised them. Matter was moving much more slowly through the Earth's interior than previously thought.
The unusual thickness of this region they found suggests the presence of cold material in this part of the mantle transition zone, where parts of the oceanic slab become stuck in the middle as they sink through the mantle. It suggests that there is.
“We found that material is sinking at about half the rate expected in this region. This may be due to the mantle transition zone acting like a barrier, slowing the movement of material through the Earth. “This suggests something,” Dr. Wang said.
“Our findings raise new questions about how the deep Earth influences what we see at the surface over vast distances and time scales.”
of result Published in a magazine scientific progress.
_____
Wang Jingchuan others. 2024. Intraoceanic subduction during the Mesozoic era formed the lower mantle beneath the East Pacific uplift. scientific progress 10(39);doi: 10.1126/sciadv.ado1219
Using new data about the Martian crust collected by NASA’s InSight spacecraft, geophysicists from the University of California, San Diego and the University of California, Berkeley estimate that groundwater could cover the entire planet to a depth of one to two kilometers. Groundwater exists in tiny cracks and pores in rocks in the mid-crust, 11.5 to 20 kilometers below the surface.
A cross section of NASA’s InSight lander and the data it collected. Image courtesy of James Tuttle Keane / Aaron Rodriquez.
“Liquid water existed at least occasionally in Martian rivers, lakes, oceans, and aquifers during the Noachian and Hesperian periods more than 3 billion years ago,” said Dr Vashan Wright of the Scripps Institution of Oceanography at the University of California, San Diego, and his colleagues.
“During this time, Mars lost most of its atmosphere and therefore the ability to support liquid water on its surface for any sustained period of time.”
“Ancient surface water may have been incorporated into minerals, buried as ice, trapped as liquid in deep aquifers, or lost to space.”
For the study, Dr Wright and his colleagues used data collected by InSight during its four-year mission, which ends in 2022.
The lander collected information from the surface directly beneath it about variables such as the speed of Mars’ seismic waves, which allowed scientists to infer what materials exist beneath the surface.
The data was fed into a model based on mathematical theories of rock physics.
Based on this data, the researchers determined that the presence of liquid water in the Earth’s crust was the most plausible explanation.
“If we prove that there is a large reservoir of liquid water, it could give us insight into what the climate was or could be like at that time,” said Professor Michael Manga of the University of California, Berkeley.
“And water is essential for life as we know it. I don’t see why underground reservoirs wouldn’t be habitable environments. On Earth they certainly are. There is life in deep mines, there is life at the bottom of the ocean.”
“We still don’t have evidence of life on Mars, but we’ve identified places that could, at least in principle, support life.”
“A wealth of evidence, including rivers, deltas, lake deposits, and hydrologically altered rocks, supports the hypothesis that water once flowed on the planet’s surface.”
“But that wet period ended more than 3 billion years ago, when Mars lost its atmosphere.”
“Planetary scientists on Earth have sent many probes and landers to Mars to learn what happened to the Martian water (water frozen in the Martian polar ice caps does not explain the whole story), when this happened, and whether life exists or ever existed on Mars,” the authors said.
“The new findings indicate that much of the water has seeped into the crust rather than escaping into space.”
“The new paper analyzes the deeper crust and concludes that the available data are best explained by a water-saturated mid-crust beneath the InSight location.”
“Assuming the crust is similar across the planet, this mid-crustal zone should contain more water than would have filled the hypothetical ancient Martian ocean.”
of Survey results Appears in Proceedings of the National Academy of Sciences.
_____
Vashan Wright others2024. Liquid water exists in the central crust of Mars. PNAS 121 (35): e2409983121; doi: 10.1073/pnas.2409983121
Mars A recent study indicates that the Earth may be hiding a global ocean beneath its surface, with cracks in rocks potentially holding enough water to form it.
Scientists believe that the water lies about seven to 12 miles (11.5 to 20 kilometers) deep in Mars’ crust, possibly originating from the planet’s ancient surface water sources such as rivers, lakes, and oceans billions of years ago, according to Vashan Wright, the lead scientist at the Scripps Institution of Oceanography at the University of California, San Diego.
Despite the presence of water inside Mars, Wright noted that it does not necessarily mean that life exists there.
“However, our findings suggest the possibility of habitable environments,” he mentioned in an email.
The research team combined computer simulations with InSight data, including earthquake speeds, to suggest that groundwater is the most likely explanation. These results were published in the Proceedings of the National Academy of Sciences on Monday.
Wright remarked that if InSight’s observations near the equator of Mars at Elysium Planitia are representative of the entire planet, there could be enough groundwater to fill a terrestrial ocean approximately a mile (1 to 2 kilometers) deep.
Tools like drills will be required to verify the presence of water and search for signs of microbial life.
Despite the InSight lander no longer being in operation, scientists are still analyzing the data collected between 2018 and 2022 to gain more insights into Mars’ interior.
Over 3 billion years ago, Mars was mostly covered in water, but due to the thinning of its atmosphere, it lost its surface water, becoming the dry and dusty world we see today. It is believed by scientists that the ancient water either escaped into space or remains hidden underground.
Antarctica’s melting ice sheet could retreat faster as warmer ocean water invades underneath it, and rising ocean temperatures could trigger a “runaway” feedback effect that pushes warm water further inland, melting even more ice and accelerating sea-level rise.
As the climate warms, the future of Antarctica’s vast ice sheet remains uncertain, and predictions vary widely about how quickly it will melt and therefore how much it will contribute to sea-level rise. One dynamic that researchers have only recently begun to recognize as a key factor is the intrusion of warmer ocean water beneath the ice.
“The mechanisms of invasion are much more powerful than we previously understood.” Alexander Bradley At the British Antarctic Survey.
Such intrusions are driven by density differences between the freshwater flowing out from beneath the ice sheet and the warmer waters where the ice meets the sea floor, known as the grounding line. They are difficult to observe directly because they occur hundreds of meters beneath the ice, but simulations suggest that in some places the warm waters could extend several kilometers inland.
One model by Alexander Lovell Researchers from the Georgia Institute of Technology in Atlanta found that widespread ice-sheet intrusion could add heat from below, lubricating ice flow along bedrock and more than doubling ice loss from the ice sheet.
Bradley and his colleagues Ian Hewitt Using their model, Oxford researchers explained how the shape of cavities in the ice changes as the ice melts, altering how ocean water flows in.
The researchers found that once ocean water reaches a certain temperature threshold, ice from the ice sheet melts faster than it can be replaced by outflowing ice. If this cavity grows larger, more water could flow under the ice sheet and penetrate further inland, creating a so-called “runaway” positive feedback effect.
“Small changes in ocean temperature lead to dramatic changes in how far warm water can intrude,” Bradley said. The ocean warming needed to cause this effect is within the range expected this century, he said, but models cannot yet predict it for specific ice sheets, and not all ice sheets are equally susceptible to such intrusions.
“This positive feedback could lead to much more intrusion than we thought,” Lovell says. “Whether that’s a tipping point that leads to unrestrained intrusion of ocean water beneath the ice sheet is probably a stretch.”
From a detailed analysis of Mimas’s orbital motion based on data from NASA’s Cassini mission, planetary researchers from the Sorbonne, the University of Nantes, Queen Mary University of London, Franche-Comte University, and Jinan University have discovered that the heavily cratered They showed that some ice shells hide recently formed ice shells. (less than 2-3 million years ago) global ocean 20-30 km deep.
The surface of Mimas, like the surfaces of other major Saturn moons that do not have atmospheres, is not pure ice but contains some black impurities. Relatively dark markings appear along the lower part of the walls of the 130km-wide Herschel Crater (the crater's central peak is about the same height as Mount Everest); the impact may have all but destroyed the Moon. there is). some small craters. Scientists interpret the darkening as evidence that the impurities have gradually become concentrated as icy material evaporates in areas where they are slowly sliding down the crater walls. Image credit: NASA / JPL / Space Science Institute.
There is growing evidence that some moons may have oceans beneath their surfaces, but such watery worlds are difficult to detect.
Mimas — Saturn's innermost and smallest (radius = 198.2 km, or 123 miles) regular moon — is an unlikely candidate due to the different nature of its surface compared to other icy moons such as Enceladus .
This theory has been challenged by Sorbonne University researcher Valerie Rainey and others who are evaluating Cassini's observations of small satellites.
Previous research suggests two possibilities inside Mimas. It is either an elongated rocky core or a global ocean.
A new study reveals that the small moon's rotational motion and orbit change due to internal influences.
For the solid-state model to apply, the rock core must be elongated and approximately pancake-shaped, which is inconsistent with observations.
Rather, measurements of Mimas' position suggest that the evolution of its orbit is better explained as influenced by an internal ocean.
The researchers calculate that the ocean lies beneath an ice shell about 20 to 30 kilometers deep.
Their simulations suggest that it appeared between 25 and 2 million years ago.
Therefore, signs of such an underground ocean would not have had time to leave traces on the surface.
This result suggests that recent processes on Mimas may have been common during the early stages of the formation of other ice worlds.
“Mimas was a small moon with a cratered surface and no sign of an ocean hidden beneath,” said co-author Nick Cooper, a researcher at Queen Mary University of London. the doctor said.
“With this discovery, Mimas joins an exclusive club of moons with inland oceans, including Enceladus and Europa, but with a unique difference: its oceans are surprisingly young.”
NASA/JPL-California Institute of Technology/Space Science I
Saturn's moon Mimas appears to have a vast global ocean beneath its icy shell, according to detailed measurements of its orbit. If other icy worlds have similar oceans, the number of planets that can support life could increase.
Mimas is the smallest of Saturn's seven major moons. For a long time, it was thought that most of it was composed of solid ice and rock, but in 2014 astronomers observed that the orbit around Saturn was unexpectedly wobbling, suggesting that this could only be explained by either a rugby ball-shaped nucleus or a liquid ocean.
Many astronomers rejected the ocean explanation, as the friction required to melt the ice would have caused visible marks on Mimas's surface. However, recent simulations suggest that this ocean may exist even without such traces.
Looking for more clues? Valerie Rainey Researchers from France's Paris Observatory analyzed observations of Mimas' orbit by NASA's Cassini spacecraft. They found that the orbit around Saturn has shifted by about 10 kilometers over 13 years.
According to the team's calculations, this orbital drift could only have been caused by an ice shell sliding over the ocean, or by wobbles from the physically impossible pancake-shaped core.
The moon's elliptical orbit and lack of surface markings also suggest that the ocean is about 30 kilometers deep and formed less than 25 million years ago. “It was very recent,” Rainey says. “We are more or less witnessing the birth of this global ocean.”
This recent activity could help explain not only the lack of traces on the surface, but also why the moon is so different from its neighbors. Enceladus has a similar shape and orbit to Mimas, and has a global ocean, but it also has a very active surface and giant spout. Rainey said the difference is simply a difference in time, and in a few million years Mimas' ice could melt and it could look similar to Enceladus.
“It would be surprising if that were true,” he says. William McKinnon at Washington University in St. Louis, Missouri. But he says there are still things that aren't perfectly aligned, such as the vast 80-mile-wide Herschel crater, which was formed by a giant impact. If Mimas' ice shell was truly only tens of kilometers deep, McKinnon said, we would have seen evidence of a distorted crater floor in the impact and aftermath. It's also unlikely, he says, that you'll be able to get a front-row seat at such a short and unique time in Mimas' long history. “I remain a Mimas ocean skeptic,” McKinnon says.
However, if Mimas has a hidden ocean, it suggests that other icy planets and moons in the solar system and elsewhere may have the same, expanding the possibility of life. “It's expanding our vision of what is and isn't a habitable world,” Rainey says. “Mimas teaches us that even a corpse that seems to have no life in it may someday come to life.”
Scientists have discovered that methane trapped beneath Svalbard’s permafrost could escape and put it at risk of a warming cycle. Frequent methane accumulations found in well exploration highlight the potential for increased global warming as permafrost thaws. Credit: SciTechDaily.com
Scientists say large amounts of methane may be trapped beneath the permafrost and could escape if it thaws.
Research in Svalbard has shown that methane is moving beneath the permafrost. Lowland regions have ice-rich permafrost, which acts as an effective gas seal, while highland regions with less ice appear to be more permeable. If permafrost thaws too much, greenhouse gas emissions could leak and temperatures could rise further.
Millions of cubic meters of methane are trapped beneath Svalbard’s permafrost. And scientists now know that methane can escape by moving beneath the cold seal of permafrost. A large-scale escape could create a warming cycle that would cause methane emissions to skyrocket. Global warming will thaw permafrost, releasing more gases; warming will thaw more permafrost, releasing more gases. These mobile methane deposits may exist elsewhere in the Arctic, as Svalbard’s geological and glacial history is very similar to other parts of the Arctic region.
“Methane is a powerful greenhouse gas,” said the study’s lead author, Dr. Thomas Birshall of the Svalbard University Center. Frontiers of Earth Science. “Although leakage from beneath the permafrost is currently very low, factors such as retreating glaciers and thawing of the permafrost could ‘uncover’ the problem in the future.”
Refrigerated
Permafrost, ground that remains below freezing Celsius It has been prevalent in Svalbard for over two years. However, it is not uniform or continuous. The western part of Svalbard is warmer due to ocean currents, so the permafrost can be thinner and more patchy. Permafrost in highlands is drier and more permeable, whereas permafrost in lowlands is saturated with ice. The rocks below are often a source of fossil fuels and emit methane, which is locked away by permafrost. However, even where permafrost exists continuously, gas can escape depending on the geographical features.
The bottom of permafrost is difficult to study because it is inaccessible. But over the years, many wells have been sunk into permafrost by companies looking for fossil fuels. Researchers used historical data from commercial and research wells to map permafrost across Svalbard and identify permafrost gas accumulations.
“My boss, Kim, and I looked at a lot of historical well data in Svalbard,” Birchall said. “Kim noticed one recurring theme, and that was the accumulation of gas at the bottom of the permafrost.”
Discover methane accumulation
Initial temperature measurements are often compromised by heating the drilling mud to prevent freezing of the wellbore. But by observing trends in temperature measurements and monitoring boreholes over time, scientists were able to identify permafrost. They also looked at ice formation within the wellbore, changes in drill chips produced during drilling of the wellbore, and changes in background gas measurements.
Well monitors confirmed the flow of gas into the wellbore, indicating that gas was accumulating beneath the permafrost, and abnormal pressure measurements indicated that the icy permafrost was acting as a seal. I did. In other cases, the permafrost and underlying geology are suitable for trapping gas, and even if the rock is a known source of hydrocarbons, it may not be present and the gas produced This suggests that they were already on the move.
Unexpectedly frequent discoveries
Scientists stressed that gas buildup is much more common than expected. Of his 18 hydrocarbon exploration wells drilled in Svalbard, eight showed evidence of permafrost, and half of them showed gas accumulation.
“All wells that encounter gas accumulation have done so by chance. In contrast, hydrocarbon exploration wells that specifically target accumulation in more typical environments have a success rate of well over 50%. It was below,” Birchall said. “This seems to be a common occurrence. One anecdotal example comes from a recently drilled well near the airport in Longyearbyen.Drillers heard bubbling coming from the well. So I decided to take a look, equipped with a rudimentary alarm designed to detect explosive levels of methane. As soon as I held the alarm over the well, it went off.”
Impact on climate change
Experts have shown that the active layer of permafrost – the top 1-2 meters that thaws and refreezes seasonally – is expanding as the climate warms. However, little, if any, is known about how deeper permafrost is changing. Understanding this depends on understanding fluid flow beneath permafrost. As permanently frozen permafrost becomes thinner and more splotchy, this methane can move and escape more easily, accelerating global warming and potentially exacerbating the climate crisis.
References: “Natural gas trapped in permafrost in Svalbard, Norway” by Thomas Birchall, Marte Jochman, Peter Bethlem, Kim Senger, Andrew Hodson and Snorre Olaussen, October 30, 2023. Frontiers of Earth Science. DOI: 10.3389/feart.2023.1277027
This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.
Strictly Necessary Cookies
Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.
