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New study suggests sponges retain grim climate records

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If temperature-tracking sponges can be trusted, climate change is happening much faster than scientists estimate.

A new study that used marine organisms called hard sponges to measure global average temperatures suggests that the world has already warmed by about 1.7 degrees Celsius over the past 300 years. This is at least 0.5 degrees Celsius higher than the scientific consensus stated in the UN report.

The findings, published Monday in the journal Nature Climate Change, are surprising, but some scientists believe the study authors’ conclusions give more inferences about global temperatures than can be confidently gleaned from sponges. They claim that they are doing too much.

However, this study raises important questions. How much warmer did the world get when humans were less systematically measuring temperatures around the world, even as fossil fuel-powered machines were running hard? Scientists say this is an important question. It is a problem that needs to be better understood.

The study’s authors say that industrialization before 1900 had a greater impact than scientists previously realized, and that influence is captured in centuries-old sponge skeletons and that we The standards we have been using to talk about the politics of climate change have been wrong.

“Essentially, these studies show that the industrial age of warming started earlier than we thought, in the 1860s,” said the study’s lead author, a researcher at the University of Western Australia’s Global Professor of Chemistry Malcolm McCulloch spoke about sponges. “The big picture is that the global warming clock has been moved forward by at least 10 years to reduce emissions to minimize the risks of a dangerous climate.”

Scientists not involved in the study say their colleagues are grappling with how much warming occurred in the decades after the industrial revolution and before temperature records became more reliable. .

“This is not the only effort to reexamine what we call the pre-industrial baseline and suggest we may have missed the increase in warming during the 19th century,” said Brown University paleoclimate and oceanography expert. said Kim Cobb, author of the report. Brown Institute for the Environment and Society. “This is an important area of ​​uncertainty.”

In its latest assessment of global warming, the United Nations Intergovernmental Panel on Climate Change (IPCC) estimated that the Earth’s surface temperature has increased by up to 1.2 degrees Celsius since before the industrial revolution.

Some scientists believe that the IPCC process (which requires consensus) will yield conservative results. For example, scientists who study Earth’s ice have expressed concern that the Earth is approaching the tipping point of the ice sheet sooner than expected and that the IPCC’s sea level rise projections are too low.

Cobb, who did not contribute to the Nature Climate Change study, said a large amount of evidence would be needed to change what scientists call the pre-industrial baseline, but other researchers have argued that warming has increased since before the 1900s. He also said that he has found some signs that the system is not being properly accounted for. .

“How big this extra warming increase actually is is currently unknown. Is this important to study? We could be missing a tenth of a degree. Is there a? Yes, I think it’s been uncovered in a series of studies over the last six to 10 years,” Cobb said.

Scleros sponges are one of many climate proxies used by scientists to gather information about past climate conditions. In the dural cavernosa, the skeletal growth layers serve a similar purpose to marine biologists, just as tree rings serve a purpose to those working in the forest.

Dural sponges grow slowly, and as they grow, the chemical composition of their skeleton changes based on the surrounding temperature. This means that scientists can track temperature by looking at the ratio of strontium to calcium as an organism steadily grows.

Studies show that every half millimeter of growth is equivalent to about two years of temperature data. Living things can grow and add layers to their skeletons over hundreds of years.

“These are truly unique specimens. The reason we are able to obtain this unique data is because of the special relationship these animals have with their surrounding environment,” McCulloch said.

The study’s authors collected sponges from waters at least 100 feet deep off the coast of Puerto Rico and near St. Croix, analyzed the chemical composition of their skeletons, graphed the results, and used the data from 1964 to When compared with sea surface temperature measurements in 2012, the trends were almost identical.

Cancellous bone data dates back to 1700, predating reliable human records. This gives scientists a longer reference point to assess what temperatures were like before fossil fuels became widespread. Researchers believe this dataset is superior to other datasets calculated using her 19th century temperature measurements from ocean-going ships.

Sponge data shows that temperatures started rising in the 1860s, before the United Nations’ Intergovernmental Panel on Climate Change considered it.

But some outside researchers say the study may have made too much use of one type of proxy indicator, especially when the data is tied to only one location on Earth.

“We should be cautious in assuming that estimates from parts of the Atlantic Ocean always reflect global averages,” Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies, said in an emailed statement. He added that the author’s claims are probably wrong. “It’s gone too far.”

The study authors said they believe the waters off Puerto Rico have remained relatively stable, reflecting global changes similar to those elsewhere in the world.

The results suggest that humanity has already surpassed political guardrails, such as world leaders’ goal of limiting global warming to 1.5 degrees Celsius.

Cobb said further work would need to be done with a dural sponge to ensure the work was accurate. And regardless of how much we are already pushing up the planet’s temperature, humanity must put the brakes on greenhouse gas production.

“Every time we get warmer, the climate impacts increase and the climate impacts worsen,” Cobb said. “We’re already living with an unsafe warming climate. … Jobs haven’t changed.”

Source: www.nbcnews.com

The Formation and Potential Destruction of the Himalayas by Earth’s Tectonic Plates

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Deep underground in the heart of Asia, two giant plates are colliding with each other. Violent, slow-motion collisions between the geological plates are continuously shaping the towering Himalayas. However, newly discovered research suggests that this ongoing tectonic collision is also dividing Tibet in half.

A group of Chinese and American scientists conducted a study of underground seismic waves from earthquakes in and around Tibet and analyzed the geochemical composition of gases in surface hot springs. They found evidence that the Indian plate may be behaving unexpectedly as it collides with the Eurasian plate.

This research, which has not yet undergone peer review, was presented at the American Geophysical Union’s annual meeting in December. The scientists theorize that as the Indian plate continues its thrust beneath the Eurasian plate, it may be splitting apart beneath Tibet, separating the eastern and western halves of the slab. This fissure could have significant implications for the stability of the region, increasing the risk of earthquakes and other hazards.

The findings of the study provide an interesting and plausible explanation for the dynamic activity in this region, according to Barbara Romanowitz, a professor at the University of California, Berkeley. She also suggests that this potential split in the Indian plate may create a zone of weakness that could lead to large earthquakes.

The study proposes that the lithospheric mantle, one of the hard parts of the Earth’s crust, are sloughing off, leaving the crust behind, causing controversy within the scientific community as to how the collision of the Indian and Eurasian plates would occur or what it would mean for the Earth.

The region where this collision is occurring is unique and serves as a natural laboratory for scientists to understand the process of continental collision in real time. It is compared to a game of hide-and-seek, providing a brief snapshot of a particular process of continental collision.

Source: www.nbcnews.com

New ways to assess hurricanes may be necessary as their strength increases

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Satellite image of Typhoon Surigae over the Pacific Ocean in 2021

European Union/Copernicus Sentinel-3 images

In the past decade, five tropical cyclones have recorded wind speeds strong enough to be classified as Category 6 storms. Analysis suggests hurricane sizes may need to be updated as rising temperatures strengthen storms.

If carbon emissions continue at their current pace, a “Category 7” storm is even possible. 'It's certainly possible in theory if we keep warming the planet,' says climate scientist james cossin at the First Street Foundation, a nonprofit research organization in New York.

Officially, there is no such thing as a Category 6 or Category 7 hurricane. According to the Saffir-Simpson hurricane scale used by the National Hurricane Center (NHC) in the United States, storms with sustained wind speeds of 252 kilometers per hour or higher are categorized as Category 5.

But as the wind speeds of the strongest storms increase, Kossin and his colleagues say using this scale becomes increasingly problematic. michael wehner That's because a study at California's Lawrence Berkeley National Laboratory does not convey the increased risk posed by increasingly severe storms.

“The situation is bad and it's getting worse,” Kossin said. “As the climate changes, these storms will become stronger.”

They say there are three pieces of evidence that global warming is causing the wind speeds of the strongest storms to increase. First, the basic theory of hurricanes as a type of heat engine says that a hotter world should produce stronger storms.

Second, high-resolution climate models produce storms with faster winds as the Earth's temperature rises.

And finally, the real-world storm is getting stronger. Of the 197 Category 5 tropical cyclones between 1980 and 2021, half occurred in the 17 years ending in 2021, with the five fastest occurring in the last nine years of this period. It occurred on.

If the Saffir-Simpson hurricane scale were expanded to rank storms with wind speeds over 309 km/h as Category 6, all five of these storms would fall into that category. The five are Typhoon Haiyan in 2013, Hurricane Patricia in 2015, Typhoon Meranti in 2016, Typhoon Goni in 2020, and Typhoon Surigae in 2021.

However, Cossin and Wehner are not suggesting that the NHC formally adopt the Category 6 definition. Cossin says using a scale based on wind speed is fundamentally flawed, given that flooding and storm surges can pose a greater threat to life and buildings. .

Instead, they believe the NHC needs to implement an entirely new system to better communicate the overall risk posed by the storm. For example, 2008's Hurricane Ike was a massive storm that caused massive flooding and damage, but Kossin said it was only a Category 1 or 2 storm when it made landfall in the United States.

kelly emmanuel at the Massachusetts Institute of Technology agree that a new scale is needed. “While I think it's important to recognize that hurricane intensity is increasing, we should also point out that most of the damage, injuries, and loss of life from hurricanes comes from water, not wind.” he says.

“I have been an advocate of replacing the venerable but outdated Saffir-Simpson scale with a new scale that reflects the totality of risk from a particular storm,” Emanuel says.

Another hurricane expert, Jeff Masters, now semi-retired, doesn't think the NHC intends or should change the Saffir-Simpson scale. “But it's important to understand how devastating these new superstorms could be, so talking about a hypothetical Category 6 storm is a valuable communications strategy for policymakers and the public. ” he says.

Masters said wind damage increases exponentially with wind speed, with a Category 6 storm with wind speeds of 314 km/h causing four times more damage than a Category 5 storm with wind speeds of 257 km/h. It is said that there is a possibility.

topic:

  • climate change/
  • Abnormal weather

Source: www.newscientist.com

Volcanic eruptions may have sparked life on Earth through lightning

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Volcanic lightning, which occurs within the clouds of volcanic ash released during some volcanic eruptions, may be a source of nitrogen.

Mike Rivers/Getty Images

Analysis of volcanic rocks revealed large amounts of nitrogen compounds, almost certainly formed by volcanic lightning. This process may have provided the nitrogen that the first life forms needed to evolve and thrive.

Nitrogen is a key component of the amino acids that are linked to make the proteins on which all life depends. Nitrogen gas is abundant, but plants cannot convert it into usable forms like carbon dioxide.

Instead, plants get most of their nitrogen from bacteria that can “fix” the gas by converting it into nitrogen compounds such as nitrate.But nitrogen-fixing bacteria didn't exist when life first evolved. Suliman Becchi There must have been non-biological sources early on, as it was at the Sorbonne University in Paris.

Lightning from thunderstorms is one possible cause. Currently, this produces relatively small amounts of nitrate, but it may have been important early in Earth's history. The famous Miller-Urey experiment of the 1950s demonstrated that nitrogen compounds containing amino acids could have been produced by lightning in Earth's early atmosphere.

Now Becchi and his colleagues show that another source may be lightning that occurs in ash clouds during volcanic eruptions.

When researchers collected volcanic deposits from Peru, Turkey, and Italy, they were initially surprised to find large amounts of nitrate in some layers. Isotopic analysis of these nitrates showed that they were originally present in the atmosphere and were not emitted by volcanoes. But Becchi says that amount is too much to be produced by lightning during thunderstorms. “It was an amazing amount of money,” he says. “It's really huge.” That means the nitrate was probably produced by volcanic lightning.

“When we looked at the various possibilities, volcanic lightning was the most likely,” Becchi said. “We know that when large-scale volcanic eruptions occur, a lot of lightning occurs.”

Tamsin Mather Researchers at the University of Oxford say their team's conclusions make sense. “Volcanic eruptions like the one studied in the paper would be expected to produce significant lightning, so it's quite possible that volcanic lightning generated this signal,” she says.

Life is thought to have first evolved around volcanoes, and the team's findings indicate that this environment may have been rich in nitrogen compounds, Becchi said.

The idea that volcanic lightning played an important role in the origin of life is not new. Jeffrey Bada Researchers at the Scripps Institution of Oceanography in California have previously shown that volcanic lightning passing through volcanic gases can produce molecules such as amino acids. “This paper just reinforces what I've published,” he says.

Source: www.newscientist.com

What’s Inside the Ancient Herculaneum Scrolls Revealed by AI

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Vesuvius Challenge Grand Prize winner used technology to decipher corrupted papyrus scrolls

vesuvius challenge

Artificial intelligence helped decipher ancient papyrus scrolls that were turned into blackened blocks of carbon by volcanic ash from Mount Vesuvius in 79 AD. The first passage of this easy-to-read text reveals the Greek philosopher's never-before-seen musings.

This discovery won a grand prize of $700,000. vesuvius challengeThey then used a combination of 3D mapping and AI techniques to detect ink and decipher the shapes of the letters in digitally scanned segments of a scroll known as the Herculaneum Papyrus. Winning team members Yusef Nader, Luke Fariter and Julian Siliger help pave the way for further discoveries from additional papyrus scrolls once housed in the library of the ancient Roman town of Herculaneum. there is a possibility.

“I think this is a huge boon to our knowledge of ancient philosophy. It's just a huge amount of new text,” he says. michael mc oscar A professor at the University of London, he was not involved in the discovery.

The winning entry met the Vesuvius Challenge criteria of deciphering at least 85 percent of the letters in four sentences of 140 characters each. Plus, as a bonus, we included 11 more columns of text totaling over 2000 characters.

These rediscovered Greek letters reveal the thoughts of Philodemus, who is believed to have been the resident philosopher of the library containing the Herculaneum Papyrus. The deciphered texts focus on how the scarcity or abundance of food and other goods affects the pleasure they bring. This fits with Philodemus' philosophy of the Epicurean school, which prioritized pleasure as the main goal of life. His 2,000-year-old writings even seem to delve into the philosophy of Stoicism, which “says nothing about pleasure.”

And the Vesuvius challenge is not over yet. Goals for 2024 include finding ways to scale up his 3D scanning and digital analysis technology without becoming too expensive. Current technology costs $100 per square centimeter. That means it could cost anywhere from $1 million to $5 million to effectively unravel the entire scroll, and there are 800 scrolls waiting to be deciphered.

“Realistically, the majority of the known libraries already in the public domain are Epicurean philosophy, and that's what we should expect, but there are also important Stoic texts, perhaps some history and Latin literature. Yes. Full text of early Roman writers such as Ennius and Livius Andronicus. [whose works] “Even if we don't survive, that would be great,” McCosker said. “Epicurus' SymposiumThe book he wrote about the biology of wine consumption would be a lot of fun. ”

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Source: www.newscientist.com

The Potential of Marine Fungi: Harnessing Water Mushrooms to Combat Antibiotic Resistance and Pollution

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Microscopic marine fungi are abundant, with approximately 2000 species discovered to date.

Dayarathne MC et al. (2020)

Take a walk along the coast almost anywhere in the world and you'll see colorful patches of life growing on rocks, seawalls, and driftwood. These are lichens, a mutualistic partnership between fungi and algae. In the UK, this may include brightly colored orange marine lichens and yellowish coastal sunburst lichens, as well as many other Drabber species.

Lichens are typically thought of as terrestrial organisms, and in fact, the majority grow inland on rocks, tree trunks, leaves, and soil. However, coastal organisms are not creatures that accidentally washed ashore from land; they are marine-adapted species found only on or in close proximity to shores. Until recently, they were considered to be outliers in the almost entirely terrestrial fungal kingdom. No more. “Fungi are present in every marine ecosystem we observe,” says Michael Cunliffe of the University of Plymouth in the UK.

Research on marine fungi is currently rapidly increasing, but their exact role and importance in marine ecosystems remains a mystery. Nevertheless, there are high hopes that it could save us from the two great scourges of the 21st century: antibiotic resistance and plastic pollution.

What are marine fungi?

The existence of marine fungi has been known for many years. The earliest descriptions were published in his mid-19th century to his early 20th century, but these were largely ignored by mainstream mycologists. Most of the species discovered are found on the roots of seaweed that live near the coast.

Source: www.newscientist.com

It is possible that global temperatures surpassed 1.5°C of warming a decade ago.

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Activists participating in COP28 climate change conference to be held in Dubai in December 2023

Sean Gallup/Getty Images

The 1.5°C limit was exceeded in 2010 or 2011, and the world is already 1.8°C warmer than it was before the industrial revolution, according to researchers using sponges to find out how seawater and air temperatures in the Caribbean have changed through 2018. The researchers who investigated this claim. Past 300 years.

“The increase in Earth's average surface temperature was 0.5 degrees Celsius greater than currently accepted estimates.” Malcolm McCulloch at the University of Western Australia. “What our research shows is that global warming scenarios are 10 years away, or even further.”

But other climate scientists argue that data from a single region is not a reliable way to understand past global temperatures.

The 2015 Paris Agreement called on countries to limit global warming to 1.5 degrees Celsius above pre-industrial levels, but it did not define exactly what this meant. So climate scientists compiling the Intergovernmental Panel on Climate Change (IPCC) report defined it as the average temperature from 1850 to 1900.

By this time, the Earth had already begun to warm as a result of emissions from burning fossil fuels. However, because there were few temperature measurements before 1850, there is great uncertainty about how much warming was caused by fossil fuels during the early industrial era. Therefore, choosing 1850–1900 as the baseline was pragmatic.

But McCulloch and his colleagues think they have discovered exactly what fossil fuel-induced warming was early on after analyzing samples of very long-lived sponges (Ceratoporella nicolsoni) forms a calcium carbonate skeleton.

The 10-centimeter-wide corpora cavernosa could be about 400 years old, team members say amos winter at Indiana State University. “These sponges grow very slowly.”

The sponges were collected by divers at depths of 33 to 91 meters off the coast of Puerto Rico. Although the original goal was to study the ocean's pH in the past, the researchers also measured the ratio of strontium to calcium, which varied with water temperature when calcium carbonate was formed.

Researchers noticed a close correlation between temperatures “recorded” by sponges and the average surface temperature of the Earth measured by instruments, especially after 1960, when measurements became more reliable. That means there is.

“This is kind of a serendipitous discovery, but the connection is very strong,” McCulloch says. “They are changing proportionately to the world average. The main differences occur when instrumental records are the poorest.”

The researchers therefore calculated the average global temperature before the industrial revolution back to 1,700 degrees Celsius, assuming that the sponges accurately reflected this.

The researchers believe their study should be taken into account when assessing whether the IPCC has exceeded the 1.5°C limit. “The bottom line is yes, the IPCC should take this issue seriously,” McCulloch said.

He also thinks climate modelers need to take the findings into account. If previous carbon emissions are causing more warming than thought, the impact of further emissions may be underestimated, he says.

But other climate scientists are far from convinced. “In my view, it would be imprudent to claim that an instrumental record is wrong based on paleocavernoids from one region of the world,” he says. michael man at the University of Pennsylvania. “That doesn't make sense to me. That said, our own early research supports the idea that there was at least another 0.2 degrees Celsius of warming by the late 19th century.”

In fact, anthropogenic warming may have started thousands of years ago. According to the early Anthropocene hypothesis proposed by William Ruddiman The University of Virginia announced that the first farmers' clearing of forests and creation of rice paddies produced enough carbon dioxide and methane to stop the planet from cooling and entering a new ice age.

Recent studies by other researchers have provided increasing evidence to support this hypothesis, but it is still far from being widely accepted.

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Source: www.newscientist.com

Nuclear fusion reactions produce nearly double the energy they consume

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Nuclear fusion experiments at the US National Ignition Facility reach a significant milestone

philip saltonstall

Scientists confirmed that a 2022 fusion reaction reached a historic milestone by releasing more energy than it put in, and subsequent tests yielded even better results. Says. The findings, now published in a series of papers, offer encouragement that fusion reactors will one day produce clean, abundant energy.

Today's nuclear power plants rely on nuclear fission reactions, in which atoms are shattered to release energy and small particles. Fusion works in reverse, pushing smaller particles together into larger atoms. The same process powers our sun.

Nuclear fusion can produce more energy without any of the radioactive waste that comes with nuclear fission, but science has yet to find a way to contain and control the process, let alone extract energy from it. Researchers and engineers couldn't find it for decades.

Experiments to do this using laser-irradiated capsules of deuterium and tritium fuel – a process called inertial confinement fusion (ICF) – began in 2011 at California's Lawrence Livermore National Laboratory (LLNL) . Initially, the energy released was only a fraction of the energy. The laser energy input was gradually increased and the experiment finally crossed the important break-even milestone on December 5, 2022. That reaction generated his 1.5 times the laser energy needed to kickstart.

One paper claims that the institute's National Ignition Facility (NIF) has seen even higher ratios in subsequent commissioning, peaking at 1.9 times its energy input on September 4, 2023. .

Richard Towne LLNL said it believes the team's checks and double-checks since the 2022 results have proven it was “not a flash in the pan” and there is still room for improvement.

Town said yields are likely to improve with the hardware currently in place at NIF, but things could move further if the lasers can be upgraded, which would take years. “A sledgehammer always comes in handy,” he says. “If I could get a bigger hammer, I think I could aim for a gain of about 10.”

But Town points out that NIF was never built as a prototype reactor and is not optimized for high yields. His main job is to provide critical research to the US nuclear weapons program.

Part of this research involves exposing the bomb's electronics and payload to the neutron irradiation that occurs during the ICF reaction to see if they would function in the event of an all-out nuclear war. The risk of electronic equipment failure was highlighted during a 2021 test when NIF opened fire, knocking out all lights throughout the site, plunging researchers into darkness. “These lights were not hardened, but you can imagine military components having to withstand much higher doses,” Town says.

This mission means that some of the project's research remains classified. Until the 1990s, even the concept of ICF was secret, Town says.

The announcement that ICF would reach break-even in 2022 raised hopes that fusion power is on the horizon, and this will be further strengthened by news that further progress has been made. However, there are some caveats.

First, the energy output is far below what is needed for a commercial reactor, producing barely enough to heat a bath. What's worse is that this ratio is calculated using the power of the laser, so for him to produce 2.1 megajoules of energy, the laser consumes her 500 trillion watts. That's more power than the output of the entire U.S. national power grid. Therefore, these experiments apply even in a very narrow sense.

martin freer The researchers, from the University of Birmingham in the UK, say these results certainly do not indicate that a practical fusion reactor can now be built. “Science still has work to do,” he says. “We don't know the answers to all of these, and we don't need researchers anymore.”

Freer says that as scientific experiments advance, they pose engineering challenges to create better materials and processes, which in turn enables better experiments and further progress. “Nuclear fusion could happen,” he says. “But the challenges we face are quite steep from a scientific perspective.”

Aneeka Khan The professor at the University of Manchester, UK, agrees that recent advances in fusion research are positive, but stresses that it will be decades before commercial power plants are operational, and that only global cooperation and He stressed that it depends on a concerted effort to train more people. field. She cautions against interpreting advances in fusion research as a possible solution to dealing with dependence on energy from fossil fuels.

“Fusion is already too slow to address the climate crisis. We are already facing the devastation of climate change on a global scale,” says Khan. “In the short term, we need to leverage existing low carbon technologies such as nuclear fission and renewables, and in the long term, invest in fusion to become part of a diverse low carbon energy mix. must commit to tackling the climate crisis.”

topic:

  • nuclear energy/
  • nuclear fusion power generation

Source: www.newscientist.com

Staying Calm: The Science behind Stress-Free People

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you know that person. People who use train delays as an excuse to get absorbed in good books. Someone who can crack a joke 10 seconds after breaking his ankle. He loves presentations and is never afraid of pressure. They seem to float through life, unperturbed by the stresses that can overwhelm us. What is their secret?

Are they blessed with stress-resistant genes? Did their upbringing make them exceptionally resilient? Are they learning specific ways to deal with life's challenges, or do they just know how to avoid stress altogether? To answer these questions, researchers have investigated how humans and animals respond and adapt to adversity, identifying which animals are particularly resistant to stress and elucidating the factors that contribute to this ability. Ta.it's the journey that took them Romanian orphanage From an interrogation room in North Carolina to a fire station in Indianapolis to a humor classroom in Austria.

This research helps the military recruit applicants for high-stress jobs. It also led to the first human trial of a “stress vaccine” that has the potential to prevent the devastating effects of conditions ranging from post-traumatic stress disorder (PTSD) to depression. But there are greater benefits to understanding the secret to a stress-free life. Knowing why some people cope with stress better than others and what we can all do to increase our resilience can only help us all cope better with the challenges of everyday life. But it may also teach you how to use stress to your advantage.

One thing you can be sure of is whether or not you're going to be late.

Article amended on February 27, 2020

We found out when people are negatively affected by stress.

Source: www.newscientist.com

Insight into historical scientific advancements provided by antique clocks

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Shimei medium with a print of the coronation of Louis XIV

National Palace Museum

These gorgeous antique clocks not only represent time, but also a window into an era of cutting-edge scientific innovation.

Each of these works, dating from 1662 to 1795, is part of a new exhibition. Zimingzhong: The Clockwork Treasure of China's Forbidden City At the Science Museum in London. It “explores how we measure time and the technical expertise, creativity and international trade behind centuries-old clocks,” said curator Jane Desborough. states.

Zimeichu in the shape of an artificial flower pot

National Palace Museum

called Ziming Middle School This bell, which means “self-ringing bell” in Mandarin, was brought to China by European missionaries during the Qing Dynasty and was prized by the Chinese emperor, who collected hundreds of them and built them in the Forbidden City in Beijing to emphasize his imperial status. It was exhibited in the palace. And a luxurious taste.

Zimingzhong celestial globe and original case included

National Palace Museum

Many of the things that made Ziming Middle School The technology incorporated into the intricate case was so prestigious that hundreds of skilled craftsmen were required to produce just one watch. Some of the complex devices still used in some clocks may have been used to time the duration of celestial events.

European style Shimeichu

National Palace Museum

The main image is Ziming Middle School It depicts the coronation of King Louis XIV of France, with other images depicted in smaller images (taken from below the main image): penjing (“Potted Landscape”) Delicate artificial flowers. A small celestial observation device that displays the movement of stars and planets around the Earth. There is also a print by 18th century painter Joshua Reynolds (pictured above). The exhibition will run until June 2nd.

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Source: www.newscientist.com

Global Shark Attack Deaths Expected to Double by 2023

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Bull sharks live in shallow waters and occasionally attack humans.

Leonardo Gonzalez/Shutterstock

Shark bites and deaths will increase globally in 2023, with Australia recording the highest number of deaths, with surfers being the biggest victims.

The University of Florida's International Shark Attack File (ISAF) investigated 120 “alleged shark-human interactions” around the world in 2023. These included nine “boat bites” and injuries at public aquariums.

Of the 120 incidents that occurred around the world, 69 were confirmed to be unprovoked bites of humans when the shark was in shark habitat and unprovoked. This number was up from his 57 cases in 2002.

A further 22 attacks were triggered, defined as “a human initiating an interaction with a shark in any way.” These include scenes of people feeding sharks, touching sharks, and attempting to free sharks from fishing nets. The rest were either scavenged bodies or their circumstances were not confirmed.

Globally, 10 people will die from unprovoked shark attacks in 2023, double the number in 2022. 42% of shark bite victims worldwide were surfers and 39% were swimmers.

Four of the deaths occurred in Australia, three of which were attributed to great white sharks (carcharodon carcharius) attack the surfer.

gavin naylor Researchers at the University of Florida said the number of unprovoked bites around the world is in line with the average for the past five years. “But the rise in the number of unwarranted deaths is a bit worrying, especially in Australia,” he says. “We will continue to monitor incidents related to nearby surfing spots.” [great] A collection of great white sharks. ”

The report comes a week after a woman was seriously injured when a bull shark bit her on the leg while swimming in one of Sydney Harbour's busiest areas at dusk.Porgy whale).

phoebe meagher Sydney's Taronga Zoo helps manage Australia's shark incident database and works closely with researchers in Florida.

He said on average over the life of the database, which goes back to 1791, Australia recorded just one death a year, a significant increase of four deaths in 2023. .

The last time Australia had no deaths was in 2019, but Meagher doesn't think the trend has changed significantly. “An increase in deaths does not mean an increase in bites,” she says.

She attributes the rise in deaths in 2023 to bad luck, with deaths more likely if attacks occur far from the coast or far from hospitals, for example. .

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Source: www.newscientist.com

Hubble Captures Images of Irregular Galaxy LEDA 6430

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NASA has released a stunning new image of the irregular galaxy LEDA 6430 captured by the NASA/ESA Hubble Space Telescope.

This Hubble image shows LEDA 6430, an irregular galaxy about 15 million light-years away in the constellation Phoenix. Image credit: NASA / ESA / Hubble / M. Messa.

LEDA6430 It is located in Phoenix, a small constellation in the south, about 15 million light years from Earth.

This galaxy, also known as ESO 245-5 or HIPASS J0145-43, 15,000 light years Across.

“The Hubble image of LEDA 6430 shows a dense starry sky over a background of dust, gas, and light from more distant objects,” Hubble astronomers said in a statement.

“In the image, the stars take up most of the field of view, so it's a little difficult to realize that you're actually looking at a large portion of the galaxy.”

“Another reason why LEDA 6430 is probably a bit difficult to tell is a galaxy is its apparent lack of structure,” the astronomers added.

“We frequently enjoy Hubble's spectacular images of spiral galaxies, which are extremely interesting to watch, in part because the stars, gas, and dust appear to be arranged in an unusually orderly manner. .”

“In contrast, the LEDA 6430 de vaucouleurs system”

“The IB(s)m designation specifically means that the galaxy is irregular (I), banded (B), has a slight spiral structure (s), and is Magellanic (m). ”

“Irregularity is very intuitive in this context; galaxies do not appear to have a regular, ordered structure,” the researchers said.

“In fact, the entire landscape here is covered in stars from this galaxy.”

“The second term means there is a bar-like shape at the center of the galaxy, which is a dense expanse of stars across the center of this image.”

“Paragraph 3 says there are hints of a helical structure, but nothing clear or definitive (hence the 's' in parentheses).”

“Finally, the last term shows that LEDA 6430 is similar to the Magellanic Clouds, two dwarf galaxies that flank the Milky Way.”

Color images of the LEDA 6430 were created from separate exposures taken in the ultraviolet, visible, and near-infrared regions of the spectrum. Hubble's Wide Field Camera 3 (WFC3) Equipment.

Five filters were used to sample different wavelengths. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter.

Source: www.sci.news

Years of Study and a Grand Vision to Merge Computers and Brains

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Elon Musk’s announcement on Monday caught the attention of a small community of scientists who work with the body’s nervous system to treat disorders and conditions.

Robert Gaunt, an associate professor at the University of Pittsburgh’s School of Physical Medicine and Rehabilitation, said, “Inserting a device into a human body is not an easy task. But without neuroscience research and decades of demonstrated capabilities, I don’t think even Elon Musk would have taken on a project like this.”

Musk tweeted, “The first humans @Neuralink I was recovering well yesterday. Initial results show promising neuronal spike detection.” However, many scientists are cautious about the company’s clinical trials and note that not much information has been made public.

Neuralink won FDA approval to conduct its first human clinical study last year, and the company is developing brain implants that allow people, including severely paralyzed patients, to control computers with their thoughts.

Although it’s too early to know if Neuralink’s implants will work in humans, Gaunt said the company’s announcement is an “exciting development.” His own research focuses on restoring motor control and function using brain-computer interfaces.

“In 2004, a small device known as the Utah array was implanted in a human for the first time, allowing a paralyzed man to control a computer cursor with nerve impulses,” according to a report from University of Utah. Scientists have demonstrated how brain-computer interfaces can help people control robots, stimulate muscles, decode handwriting, speech, and more.

Musk said the clinical trials will aim to treat people with paralysis and paraplegia. However, many scientists believe enhancing human performance through brain-controlled devices is far in the future and not very realistic.

Still, Neuralink’s clinical trials represent a major advance for the fields of neuroscience and bioengineering. Funding basic science research is key to private companies advancing commercially viable products, says Gaunt.

Source: www.nbcnews.com

Finally Breaking Free from Smartphone Addiction: A Step-By-Step Guide

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According to Ofcom, the UK communications regulator, the average Brits check their phones every 12 minutes. For many of us, it’s the first thing we do in the morning and the last thing we do at night. It is a persistent, persistent obsession caused by molecules in the brain.

Usually, one specific molecule is thought to be responsible for this type of behavior: dopamine. This neurotransmitter is called a “feel-good” molecule because of its role in the brain’s reward system.

But it’s not just about joy. Dopamine receptors in the brain respond when we expect something pleasurable. And that’s why we keep checking our phones.

Mobile games and social media apps are designed to maintain that urge.

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Anna Lembke He is a professor of psychiatry and behavioral sciences at Stanford University. She believes smartphones are like hypodermic needles, providing an endless supply of “digital dopamine” to their billions of users.

“Digital media activates the same parts of the brain as drugs and alcohol, releasing dopamine,” Lembke says. “With repeated use, our brains adapt by downregulating dopamine transmission.” They enable this by shrinking dopamine receptors.

“If exposure continues in sufficient amounts, our brains enter a state of dopamine deficiency characterized by depression, anxiety, insomnia, irritability, and cravings. When that happens, we are unable to perform certain tasks. You reach for digital media not as a tool to achieve something, but to get out of your dopamine-deprived state and stop feeling bad.”

Behavioral addictions, such as compulsive use of social media, are the subject of much debate. While it is true that digital media use increases the release of dopamine, the amount is much lower than that of cocaine or methamphetamine, so some believe that drug abuse should not be discussed on a par with drug abuse.

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Addicted or not, we Brits spend an average of four hours a day on our phones. Most of us probably wish we could go back to those days. So can we use what we know about the brain’s reward system to loosen the grip of our smartphones? Perhaps…

One idea you may have heard of (ironically, on Instagram or TikTok) is dopamine fasting.

This is a type of meditation or cognitive behavioral therapy, a practice that attempts to limit compulsive urges and change behavior. The idea is to consciously disconnect yourself from things that overstimulate you, such as social media, for a short period of time.

Proponents argue that short-term abstinence allows you to do more of the things you actually love while developing a healthier relationship with technology. But critics warn there is little evidence to support this claim.

Still, researchers who study excessive social media use often agree that some kind of digital detox may be a good thing.

“I’m a strong supporter of social media fasting,” he says Daria Kuss, a psychiatrist and professor of psychology at Nottingham Trent University. “Drinking this on the weekend may help you stop habitual social media use and reset your behavior.”

“My research shows that spending time with friends and family outside of social media, in the offline world, creates positive emotions and strengthens bonding experiences and feelings of connection.” Kuss says. “Therefore, meeting a friend for coffee can be a more positive experience than chatting with a friend on Messenger.”

About our experts

Anna Lembke He is a professor of psychiatry and behavioral sciences at Stanford University and the author of the book Dopamine Nation: Finding Balance in an Age of Luxury. Her research is of American Journal of Therapeutics, American Journal of Drug and Alcohol Abuse and British Medical Journal.

Daria Kuss He is a professor of psychology at Nottingham Trent University and an author. Internet Addiction – Evidence-Based Practice in Psychotherapy. Her research is of Addiction Research and Treatment Journal, psychopathology and frontiers of psychology.

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Source: www.sciencefocus.com

The reasons behind diet failures, as explained by a weight loss surgeon, and the key to successful eating.

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Perhaps many of us have attempted to reduce our waistline by watching our calorie intake or hitting the gym, only to find little success. Should we be doing things differently?

According to Dr. Andrew Jenkinson, a consultant bariatric surgeon at University College London Hospital and the author of “Why do we eat (overeating)?” and “How to eat (and still lose weight)”, losing weight has more to do with eating foods that manage levels of leptin hormone rather than focusing on calorie counting or exercise.

So what exactly is leptin, and how does it work? Dr. Jenkinson shared insights in a recent discussion with us about leptin, food consumption, and strategies to reduce appetite.

When it comes to the problem of obesity, Dr. Jenkinson views it as a major health and economic issue that could lead to the collapse of healthcare systems. He highlighted the prevalence of obesity-related conditions such as type 2 diabetes, high blood pressure, sleep apnea, joint problems, and an increased risk for cancer.

Leptin, a hormone secreted by fat cells, regulates body weight by signaling the hypothalamus, the weight control center of the brain. However, certain foods can block leptin signals, such as sugar, refined carbohydrates, and processed foods, which increase insulin levels and block leptin.

Dr. Jenkinson emphasized that the concept of calories alone is not an effective approach to weight loss. Instead of focusing on calorie counting, he suggested avoiding foods that negatively impact insulin, which can shift the weight set point downward without significant effort.

In terms of exercise, Dr. Jenkinson explained that intense exercise can burn calories, but it can also lead to increased hunger and decreased metabolic rate if not balanced with calorie restriction. He recommended a combined approach of calorie restriction and intense exercise to achieve effective weight loss.

This interview with Dr. Andrew Jenkinson has been edited for clarity and length.

Dr. Andrew Jenkinson is a Consultant in Bariatric (Weight Loss) and General Surgery at University College London Hospital and the author of “Why do we eat (overeating)?” and “How to eat (and still lose weight).”

Source: www.sciencefocus.com

The Surprising Reasons Why Cats Lick People

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Licking: Cats are obsessed with licking. Research shows that adult felines can spend up to 8% of your waking hours grooming themselves. Licking also serves an important social role in felines, and adult cats often lick each other just before mating. But what about humans? Why do cats lick people? There is no evidence that your cat considers this part of a pre-mating ritual.

Scientists and cat behavior experts aren’t entirely sure why cats lick your face or hands with their little tongues. However, while there is no comprehensive and definitive explanation for this behavior, there are several theories as to why domestic cats lick humans. Your cat might not like all of them.

Why do cats lick people?

There is no single reason why a cat might lick you. However, there are three main theories as to why domestic cats behave this way:

  • It shows they trust you.
  • They are accessing biochemical information from your skin.
  • They are marking you as their property.

trust theory

Cats may lick you to show that they trust you or to show that they don’t consider you a serious competitor.

“This type of licking is similar to the cat-to-cat behavior known as allogrooming, which is essentially mutual grooming. When cats are young kittens who are blind and deaf, “They learn this from their mothers. It’s basically cleaning the kittens and strengthening their social bond.” doctor dEnthusiastic, Sands is an expert in animal psychology with over 25 years of clinical experience.

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“Due to this maternal influence, adult cats will only lick other cats that they trust and are not in competition with. And this trusting grooming behavior may be transmitted to humans.

“At the end of the day, cats don’t sit there saying, ‘I’m a cat and you’re a human.’ To them, the animal is either in competition with them or not. And licking. That shows you’re not competing.”

In other words, if your cat licks you, it’s not a positive sign of affection. That’s not a negative thing at all (it’s as good as a cat).

Helpful note: Always think about where your cat last licked before allowing this. Photo credit: Getty

If in doubt, consider the cleverly titled Lincoln University study. Domestic cats show no signs of being attached to their owners.

Researchers swapped human owners with 20 felines and discovered they were felines. He seemed to be deepening his bonds with strangers. than in the actual owner (shown through behaviors such as play and mirroring).

The researchers wrote: “These results are consistent with the view that adult cats are also typically very autonomous in their social relationships and are not necessarily dependent on others to provide a sense of security and security.”’ “We are doing it,” he concluded.

biochemical theory

This sounds complicated, but essentially it’s a very simple idea: cats like you because they’re interested in the smell on your hands.

“Cats’ taste buds are so sensitive that they can detect the smell of our skin, which can contain pheromone secretions from other animals,” says Sands. “There could also be salt, moisturizer, or something else you’ve eaten on your hands. To cats, these are all interesting scents, and they can detect it by licking. It could just be that.”

possession play theory

As Sands says, cats are “head-to-tail sniffing machines.” And what’s their favorite smell? Themselves. In fact, they love their unique scent (which acts as a fingerprint suspended in the air) so much that they think it should replace other scents.

Sands explains that this is why cats lick themselves after petting you. “It’s purely to get rid of your smell!” he says.

Many other cat behaviors come down to ownership and territory. Everything they do is very territorial,” Sands added. “When cats groom other cats or humans, they may remove scents and replace them with their own. It’s their way of marking and saying, ‘This is mine.’ I’m yours!”

About our expert Dr. David Sands

Sands, who holds a PhD in animal behavior (animal psychology) from the University of Liverpool, has over 25 years’ experience in animal behavior clinics. He is a Fellow of the Dog and Cat Behavior Association (CFBA) and the Society for the Study of Animal Behavior (ASAB).

Sands is also the author of the following books: Cats 500 questions answered (Hamlin, £4).

Read more about cat science

Source: www.sciencefocus.com

Enhancing Virtual Reality with Artificial Touch Technology for a More Immersive Experience

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When you open the door, it hits you and warmth spreads over your skin. Fighting the smoke and heat, I brace myself and head inside. As you walk through a burning building, flames flicker around you. You find what you want and run away. It's so cold outside that I start shivering and my hands and feet go numb.

But when I remove the headset, everything stops. An incredibly realistic training exercise is now complete. All of these sensations felt real, but they were not caused by changes in my surroundings. Instead, carefully selected chemicals were injected into the skin to mimic different emotions.

Such stimuli have long helped us understand the most complex of the human senses: touch. In the 1990s, research into capsaicin, an extract from chili peppers, and menthol, found in peppermint, helped determine how our bodies respond to heat and cold. now, Jasmine Lu and colleagues at the University of Chicago They use this knowledge to create chemically induced sensations that make virtual environments incredibly realistic.

With a technology called chemical haptics, they built a wearable device that, when placed on the skin, can cause the wearer to experience different sensations, such as hot or cold, numbness or tingling, depending on their needs. . Its uses could include creating highly realistic virtual worlds for gamers to explore, training firefighters, and more. But will we ever be able to fully recreate the experience of touching the real thing? And if we can't, what might we stand to lose?

Source: www.newscientist.com

Mathematicians conclusively demonstrate Bach’s greatness as a composer

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According to information theory, Johann Sebastian Bach was a great composer

Granger Collection / Alamy Stock Photo

Johann Sebastian Bach is considered one of the great composers of Western classical music. Researchers are currently trying to find out why by analyzing his music using information theory.

Suman Kulkarni Researchers at the University of Pennsylvania wanted to understand how the ability to recall and predict music is related to its structure. They decided to analyze Bach's works because he produced a huge number of works with a variety of structures, including religious hymns called chorales and the fast-paced masterpiece Toccata.

First, the researchers transformed each configuration into an information network by representing each note as a node and each transition between notes as an edge and connecting them. Using this network, we compared the amount of information in each work. Intended to entertain and surprise, toccatas contain more information than chorales, which are composed for more contemplative settings such as churches.

Kulkarni and her colleagues also used information networks to compare listeners' perceptions of Bach's music. They started with an existing computer model based on an experiment in which participants responded to a series of images on a screen. The researchers then measured how surprising the elements of the array were. They adapted an information network based on this model to music, where the links between each node are used to determine how likely a listener thinks two connected notes are to be played in succession, or how likely they actually are. It expresses how surprised you would be if that happened to you. Because humans don't learn information perfectly, a network that shows people's estimated sonic changes to a song is unlikely to accurately match a network based directly on that song. Researchers can quantify that discrepancy.

In this case, the discrepancy is low, suggesting that Bach's works convey information fairly effectively. But Kulkarni wants to fine-tune computer models of human perception to better match actual brain scans of people listening to music.

“More than just knowing frequencies, neuroscience has the missing link between complex structures like music and the brain's response to them. [of sounds]. This study could provide an exciting step forward.” randy mackintosh At Simon Fraser University, Canada. However, there are many other factors that influence how a person perceives music. For example, how long the person listens to songs, whether they have musical training, etc. These still need to be explained, he says.

Even in information theory, it is still not clear whether Bach's compositional style was exceptional compared to other types of music. McIntosh said his own previous research has found some general similarities between the musicians, similar to the differences between Bach and rock guitarist Eddie Van Halen, but more detailed analysis is needed. It states that.

“I would like to perform the same analysis for different composers and non-Western music,” Kulkarni says.

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Source: www.newscientist.com

Chatbots Powered by AI Show a Preference for Violence and Nuclear Attacks in Wargames

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In wargame simulations, AI chatbots often choose violence

Gilon Hao/Getty Images

In multiple replays of the wargame simulation, OpenAI's most powerful artificial intelligence chooses to launch a nuclear attack. Its proactive approach is explained as follows: Let's use it.'' “I just want the world to be at peace.''

These results suggest that the U.S. military is leveraging the expertise of companies like Palantir and Scale AI to develop chat systems based on a type of AI called large-scale language models (LLMs) to aid military planning during simulated conflicts. Brought to you while testing the bot. Palantir declined to comment, and Scale AI did not respond to requests for comment. Even OpenAI, which once blocked military use of its AI models, has begun working with the US Department of Defense.

“Given that OpenAI recently changed its terms of service to no longer prohibit military and wartime use cases, it is more important than ever to understand the impact of such large-scale language model applications. I am.”
Anka Ruel at Stanford University in California.

“Our policy does not allow us to use tools to harm people, develop weapons, monitor communications, or harm others or destroy property. But there are also national security use cases that align with our mission,” said an OpenAI spokesperson. “Therefore, the goal of our policy update is to provide clarity and the ability to have these discussions.”

Reuel and her colleagues asked the AI ​​to role-play as a real-world country in three different simulation scenarios: an invasion, a cyberattack, and a neutral scenario in which no conflict is initiated. In each round, the AI ​​provides a rationale for possible next actions, ranging from peaceful options such as “initiating formal peace negotiations,'' to “imposing trade restrictions'' to “escalating a full-scale nuclear attack.'' Choose from 27 actions, including aggressive options ranging from

“In a future where AI systems act as advisors, humans will naturally want to know the rationale behind their decisions,” he says.
Juan Pablo Riveraco-author of the study at Georgia Tech in Atlanta.

The researchers tested LLMs including OpenAI's GPT-3.5 and GPT-4, Anthropic's Claude 2, and Meta's Llama 2. They used a common training method based on human feedback to improve each model's ability to follow human instructions and safety guidelines. All of these AIs are supported by Palantir's commercial AI platform, but are not necessarily part of Palantir's U.S. military partnership, according to company documentation.
gabriel mucobi, study co-author at Stanford University. Anthropic and Meta declined to comment.

In simulations, the AI ​​showed a tendency to invest in military power and unexpectedly increase the risk of conflict, even in simulated neutral scenarios. “Unpredictability in your actions makes it difficult for the enemy to predict and react in the way you want,” he says.
lisa cock The professor at Claremont McKenna College in California was not involved in the study.

The researchers also tested a basic version of OpenAI's GPT-4 without any additional training or safety guardrails. This GPT-4 based model of his unexpectedly turned out to be the most violent and at times provided nonsensical explanations. In one case, it was replicating the crawling text at the beginning of a movie. Star Wars Episode IV: A New Hope.

Reuel said the unpredictable behavior and strange explanations from the GPT-4-based model are particularly concerning because research shows how easily AI safety guardrails can be circumvented or removed. Masu.

The US military currently does not authorize AI to make decisions such as escalating major military action or launching nuclear missiles. But Koch cautioned that humans tend to trust recommendations from automated systems. This could undermine the supposed safeguard of giving humans final say over diplomatic or military decisions.

He said it would be useful to see how the AI's behavior compares to human players and in simulations.
edward geist at the RAND Corporation, a think tank in California. However, he agreed with the team's conclusion that AI should not be trusted to make such critical decisions regarding war and peace. “These large-scale language models are not a panacea for military problems,” he says.

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Source: www.newscientist.com

A newly discovered kangaroo lizard species found in India

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A research team led by scientists from Calicut University has described a new species of agamid lizard discovered in the Indian state of Kerala.

Agastya Gama Edge, an uncollected female from the reference locality habitat of Kuramab, Idukki District, Kerala, India. Image credit: Sandeep Das.

The newly confirmed species belong to the following: Agastya Gama, a previously monotypic genus of diurnal, terrestrial, insectivorous lizards of the family Agamiidae.

This genus includes Indian Kangaroo Lizard (Agastya Gama Bed Dormitory) Originally from the Indian states of Tamil Nadu and Kerala.

“Terrestrial agamids, which inhabit the forests of southern India and Sri Lanka, are currently classified into two separate genera. Agastya Gama and Otocryptis It is based on genetic and morphological grounds,” said Calicut University researcher Sandeep Das and colleagues.

“Genus Otocryptis It originally included two species. Otocryptis Bed Dormitory From the southern Western Ghats of India, Otocryptis wigmannii It comes from the humid region of Sri Lanka. ”

“After a long gap, additional species Otocryptis nigristigma Illustrated from the dry forests of Sri Lanka. ”

“In 2018, scientists showed that the Sri Lankan kangaroo skink is paraphyletic with the Western Ghats kangaroo skink.”

“This prompted them to establish a monotypic genus.” Agastya Gama to accommodate Indians. Otocryptis Bed Dormitory however, no molecular data are available. Otocryptis nigristigma”

Agastya Gama Edge Lifetime: (A) An unrecovered adult male from Kuramab, Idukki District, Kerala, India. (B) Females not collected from the same locality. Image credit: Sandeep Das.

named Agastya Gama EdgeThe new species is a small agamid lizard with a body length of 3 to 4.3 centimeters.

“Agastya Gama Edge It is the second species of the genus Agastya Gama” said the researchers.

“On the surface, they are similar. Agastya Gama Bed Dormitory They vary in overall shape, size, and color, but can be distinguished by the combination of letters. ”

Agastya Gama Edge It is currently known only from evergreen forests in the Idukki district of Kerala, India. All records of this species are between 636 and 835 m above sea level.

“We encountered more individuals from March to May,” the scientists said.

“Disturbed habitats such as roadside vegetation and plantation areas had lower numbers compared to undisturbed vegetation types.”

“During the breeding season from March to May, males had creamy spots on their throats. Young individuals were observed in June and July.”

“Discovery of the second species Agastya Gama “The reptile diversity of the Western Ghats is increasing,” they added.

“Agastya Gama Bed Dormitory Its range is home to a variety of habitat types, including myristica wetlands, hilltop tropical evergreen forests in the south, tropical evergreen forests on the west coast, tropical semi-evergreen forests on the west coast, and secondary moist mixed deciduous forests in the south. I am. Agastya Gama Edge So far it has been recorded only from tropical semi-evergreen and evergreen forests. ”

“Our study shows that the two species are geographically separated by about 80 km in a straight line.”

discovery of Agastya Gama Edge is explained in paper It was published in the magazine vertebrate zoology.

_____

S. Das other. 2024. Discovery of a new species of kangaroo lizard (Squamatora: Agamiidae: Agastya Gama) from the southern Western Ghats of India. vertebrate zoology 74: 151-168; doi: 10.3897/vz.74.e113084

Source: www.sci.news

California’s recovery from last year’s storms hindered by new atmospheric river floods

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As California prepares for another strong atmospheric river storm on Sunday, Lake Tulare serves as a reminder of the impactful effects these extreme storms can have.

The lake’s floodwaters, which were formed after approximately 12 atmospheric river storms hit California in 2023, are still present 9 months after the resurgence of the “ghost lake.” More than a month later, they still cover thousands of acres of prime farmland.

This summer, the stagnant water of the lake became a gathering place for wild birds and caused an outbreak of avian botulism. Wildlife officials had to patrol daily by airboat and collect hundreds of dead birds. Submerged flooded vehicles and communication equipment at the bottom of the lake left farmers unable to access their fields.

The continuing presence of the lake in this part of the Central Valley emphasizes how the environmental impacts of last year’s extreme rainfall are still affecting California. While this weekend’s storms could bring heavy precipitation to other parts of the state, most flooding effects are not expected to last long.

Currently, Lake Tulare is rapidly shrinking despite recent rainfall. As of Thursday, about 4,532 acres of farmland were still underwater, but the floodwaters have subsided, according to Kings County spokesman Justin Caporusso. This means the lake is now less than 20 times smaller than last year’s peak, and life is returning to normal for nearby residents.

Sgt. Nate Ferrier of the Kings County Sheriff’s Office, who visited the lake in late January, noted that much of the lake has been cleaned up.

“The farming community was already revitalized,” he said. “There were tractors everywhere.”

The lake was a natural feature of the southern San Joaquin Valley until settlers dug irrigation canals to reroute water and drain agricultural land more than a century ago. Last year, the Tulare Basin flooded after a series of storms because reservoirs could not handle heavy snowmelt runoff from the Sierra Nevada mountains.

Caporusso stated that this week’s atmospheric river storms, expected to be accompanied by a significant storm on Sunday, are unlikely to have a significant impact on Tulare Lake. The reservoir upstream of the lake has the capacity to handle the precipitation, and the California Department of Water Resources found that about 45% of normal snow falls in the southern Sierra Nevada during this period.

Source: www.nbcnews.com

The Cicada Spectacle: What to Expect from the Insect Apocalypse

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Remember in 2021, when Brood XIII and it’s coming soon.

What is a cicada?

Cicadas are large, durable insects with transparent wings and large compound eyes. They have a unique corrugated exoskeletal structure called a “timbal” on the side of their abdomen, and it is this organ that produces the loud buzzing sound.

By rapidly contracting and relaxing the “ribs” of the eardrum (essentially folding the eardrum), cicadas produce chirping, clicking, or snapping sounds. And thanks to the insect’s hollow abdomen, this sound is amplified.This is the most complex sound- and vibration-producing organ of any arthropod, and the eardrum is probably evolved over 300 million years ago.

Each species has a unique call, and the African cicada Brevisana Brevis, Also known as the high-pitched cicada, the cicada is very noisy. It has been recorded that it reached a whopping 106.7 decibels. – It’s almost as loud as a chainsaw.

There are over 3,000 species of cicadas around the world, but only one species exists in the UK: the endangered New Forest cicada. cicadetta montana. In fact, it is so endangered that No one has seen it since the 1990s.There is a possibility that that species is already extinct.

Adult cicadas can take up to 17 years to complete development. – Photo credit: Getty

Why a huge cicada explosion will occur in 2024

To make it easier to track the patterns of occurrence of different populations, entomologists divide cicadas into “family members.” This is especially helpful for periodic cicadas that spend longer underground than their annual or dog days.

Different chicks usually appear at different times. But this year is quite literally a once-in-a-lifetime event, as his two offspring, Brood XIII (born every 17 years) and Brood XIX (born every 13 years), will be born at the same time.

The last time these brothers were in sync was 221 years ago* in 1803. And he is in 2245 when it happens again. And it just so happens that these two of his brothers are geographically adjacent. So if you live in Illinois or Indiana, you’re in for a double whammy.

result? Billions of cicadas will emerge in a noisy mating frenzy sometime this spring. Some estimates suggest that as many as 1 trillion cicadas could be seen in this so-called “insect apocalypse.”

Brood XIII last saw the light of day in 2007, but it may first appear in April or when soil temperatures reach around 17.7°C (64°F). Brood XIX is also expected to follow him around mid-May.

Be careful of rain showers at this time of year. The influx of warm water will encourage these noisy creatures to leave their underground nests.

How many cicadas are there?

There are seven types of periodic cicadas, Magicada. Currently, in the 13 year cicada he has 3 different chicks and in the 17 year cicada he has 12 chicks. They are all native to the United States.

The next cicada emergence period is as follows.

  • 2024: Brood XIII and XIX – see below

Source: www.sciencefocus.com