Humpback Whales Collaborate to Catch Fish Using Bubbles
Jen Dickey/North Coast Cetacean Society
Innovative foraging behaviors are rapidly spreading among humpback whales in the fjords of western Canada, showcasing how cultural knowledge contributes to the survival of marine populations.
Bubble net feeding is a coordinated hunting method where humpback whales expel bubbles to encircle fish, then all rise simultaneously to feed.
According to Ellen Garland from the University of St. Andrews, “This is a collaborative activity characterized by a high degree of coordination and division of labor.”
This remarkable behavior has been observed for decades among humpback whales (Megaptera novaengliae) in Alaskan waters, with recent observations detailing their activities in the northeastern Pacific off Canada’s coast.
However, determining whether such complex behaviors stem from social learning or independent discovery among individuals remains a challenge for researchers.
In a comprehensive study, Edyn O’Mahony and a team from the University of St. Andrews analyzed field observation data from 2004 to 2023, focusing on 526 individuals in British Columbia’s Kitimat Fjord System, part of Gitga’at First Nation Territory.
Using distinct images of each whale’s tail fin, researchers identified 254 individuals engaging in bubble net feeding, with approximately 90% of these activities occurring in a cooperative setting.
This behavior surged post-2014, aligned with a significant marine heatwave in the Northeast Pacific that diminished prey availability.
“As heatwaves decrease prey availability, the whales’ adaptability in their feeding techniques is crucial for maintaining their caloric intake,” stated O’Mahony.
Whales are more likely to adopt bubble net feeding when they interact with individuals already using this technique. While bubble net feeding likely spread to the region from migrating whales, the current prevalence indicates stable groups or influential individuals spreading this knowledge through local social networks.
“After several years post-heatwave, we observe that whales previously not participating in bubble net feeding are now present in this area,” O’Mahony added.
The ability of humpback whales to share knowledge within social groups could be vital for their survival, implying that our understanding of their culture is essential for conservation efforts.
According to Ted Cheeseman, co-founder of the citizen science platform Happywhale, who did not participate in the study, “The key question is not just about the number of whales remaining but also whether the social behaviors crucial for population cohesion are restored.”
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Researchers exploring solutions for Inflammatory Bowel Disease (IBD) have drawn surprising inspiration from barnacles.
Inflammatory Bowel Diseases, including Crohn’s disease and ulcerative colitis, typically arise when the immune system mistakenly attacks the intestines, leading to inflammation. Common symptoms encompass diarrhea, significant abdominal pain, weight loss, and gastrointestinal bleeding.
While anti-inflammatory medications like steroids can alleviate symptoms, persistent bleeding may necessitate the use of small metallic clips inserted into the intestine to address the inflammation-induced wounds. However, this procedure carries potential infection risks and may exacerbate the injury.
In pursuit of gentler alternatives, researchers have previously engineered bacteria to generate proteins beneficial for wound healing. Unfortunately, these microorganisms are generally eliminated from the intestines within days and require manual activation with pharmaceuticals, according to Bolin Anne from the Shenzhen Institute of Synthetic Biology in China.
Recently, Ahn and colleagues have genetically modified a benign strain of Escherichia coli that produces protein fragments promoting wound healing upon detecting blood. They also engineered these bacteria to create a type of “cement protein” used by barnacles to adhere to submerged surfaces, envisioned as a “living glue” to fabricate an anti-inflammatory seal over open wounds.
To validate this novel approach, researchers induced intestinal inflammation and scarring in mice. Each subject received either a non-genetically engineered strain, the engineered Escherichia coli, or saline via an anal tube.
After ten days, mice treated with the engineered bacteria exhibited significant weight restoration, and their intestines mirrored the health of uninjured mice. No adverse side effects were recorded in any group.
Similar outcomes were noted when bacteria were administered in tablet form, suggesting potential for oral delivery in human treatment. “This presents a promising, innovative strategy,” states Shaji Sebastian at Hull University in the UK. He indicates that wound healing and inflammation in the mouse intestine is analogous to processes in humans, underscoring the necessity for human trials.
Plans are underway to test this approach in larger animals, including pigs, to assess how long the genetically modified bacteria remain viable in the gut, Ang mentioned. However, due to the necessity for extensive testing to confirm efficacy and safety compared to existing treatments, it may take up to ten years before these solutions could become available in clinics, according to Sebastian.
The grand stone statues of Easter Island may have originated from diverse artistic and spiritual traditions, where multiple communities independently created their own massive carvings, rather than through a centralized effort led by a powerful ruler. This revelation aims to better identify the island’s primary quarries.
Easter Island, or Rapa Nui, located in the Pacific Ocean, is believed to have been settled by Polynesian navigators around 1200 AD.
Archaeological observations indicate that the Rapa Nui were not politically unified, prompting discussions on whether the numerous moai statues were produced under a centralized authority.
The island had only one quarry, Rano Raraku, that provided the volcanic rock utilized for the statue carvings.
Curl Lipo and his team at Binghamton University in New York employed drones and advanced mapping technology to develop the first 3D representation of the quarry, which holds many incomplete moai. Lipo noted that earlier studies yielded varying results regarding the number of moai remaining at the site.
Lipo and his associates documented 426 features representative of the moai at different completion stages, 341 grooves indicating the planned carving blocks, 133 carved cavities for removing the statues, and five bollards likely used for lowering the moai into position.
It was also noted that the quarry was divided into 30 distinct working areas, each functioning independently with various carving methods, according to Lipo.
The idea that small factions of workers may have relocated the moai statues, along with prior evidence of separate territories marked by groups at freshwater sources, hints that the statue carvings stemmed from community-level competition rather than centralized governance, Lipo explained.
“Monumentalism signifies a competitive display among peer communities instead of top-down mobilization,” he stated.
Historians continue to discuss the alleged decline of the Rapa Nui, with some contending that resource over-exploitation resulted in a severe social breakdown, while others challenge this narrative.
Lipo argues that the collapse theory presumes a centralized leadership pushed for monument construction, leading to deforestation and social disintegration. “However, if monuments are decentralized and arise from community competition rather than intentional expansion, then deforestation cannot be attributed to egotistical leadership,” Lipo comments.
Nevertheless, some researchers are skeptical about this perspective. Dale Simpson, from the University of Illinois at Urbana-Champaign, concurs there wasn’t a singular overarching chief as seen in other Polynesian regions such as Hawaii and Tonga; however, he suggests clans were not as isolated as proposed by Lipo and others, indicating there must have been collaboration among the groups.
“I think they’ve had a bit too much Kool-Aid and haven’t fully considered the limiting factors in a confined area like Rapa Nui, where stone is paramount. It’s not feasible to carve moai within a single clan without interaction and stone-sharing,” he notes.
Jo Ann Van Tilburg from the University of California, Los Angeles, mentioned that further investigations are in progress to ascertain how the Rapa Nui exploited Rano Raraku, asserting that the conclusions drawn by Lipo’s team appear “premature and overstated.”
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“The technology has arrived and is currently unfolding,” stated Susan Lieberman, vice president of international policy at the Wildlife Conservation Society. “There may be instances where genetically modified organisms can be cautiously and ethically tested and introduced into natural environments.”
He remarked that the new framework represents a “transformative advancement” that may enable conservationists to explore innovative solutions to climate change challenges and to assess new methods for disease control.
The IUCN consists of a vast coalition of conservation organizations, governments, and indigenous communities, boasting over 1,400 members from roughly 160 nations, convening once every four years. It stands as the globe’s largest network of environmental organizations and is responsible for the Red List, which monitors endangered species and global biodiversity.
This year’s conference took place in Abu Dhabi, where the vote favoring “synthetic biology” established a new framework for assessing genetic engineering initiatives and their potential implementation. This measure mandates that scientists evaluate such projects on an individual basis, maintain transparency regarding the associated risks and benefits, and adhere to precautionary principles relating to genetic engineering. This applies to a spectrum of organisms, including animals, plants, yeast, and bacteria.
Another proposal, which aimed to suspend the release of genetically modified organisms into the environment, failed by a narrow margin of one vote.
Jessica Owley, a professor and director of the environmental law program at the University of Miami, noted that while the IUCN decision lacks legal force, it carries symbolic importance and could influence international policy.
“IUCN is a powerful and recognized entity in the conservation field. Their word holds weight, and governments pay attention. They play a significant role in various treaties,” she commented. “This can be viewed as groundwork for future legal language.”
Organizations advocating for a moratorium on the release of genetically modified organisms into the wild argue that there is insufficient evidence to prove it can be done safely and responsibly.
“We’re disappointed,” stated Dana Perls, senior food and agriculture program manager at the nonprofit Friends of the Earth. “Our focus should be on confined research that doesn’t turn our environment into a live experimental lab.”
As a potential example, she cited: genetically modifying mosquitoes to combat the malaria-causing parasite. The disease claims over 500,000 lives annually, prompting scientists to propose spreading this malaria resistance across broader mosquito populations through a method known as genetic drive.
This excerpt is from our human stories newsletter, focused on the archaeological revolution—sign up to receive it monthly.
In human stories, I aim to address common questions about human evolution. In February 2021, I tackled a query that many find perplexing—whether Neanderthals and modern humans are distinct species (short answer: species boundaries are ambiguous).
This month, we confront another frequently asked question: Do Denisovans, the extinct human group once prevalent in Asia, have a designated species name? If so, what should that name be?
The debate regarding the “official” name of the Denisovans has been lively since their discovery in 2010. Notably, in June, the skull of Harbin, dubbed the Dragon Man from northern China, was classified as Denisovan through molecular evidence. This marked the first acquisition of a Denisovan skull, giving us insights into their facial features.
While participating in New Scientist discussions, host Rowan Hooper asked why Denisovans lack a species name. Why can’t we refer to them as Homo Denisovanensis, similar to how Neanderthals are called Homo Neanderthalensis?
I preferred a straightforward explanation: insufficient information has hindered a definitive classification of Denisovans. Their DNA shows significant divergence from Neanderthal DNA; yet, we require detailed insights into their anatomy and skeletal structure.
However, this inquiry is multifaceted. First, we must identify which fossils unequivocally belong to Denisovans. This involves analyzing numerous specimens and decades of research, complicating the resolution. Secondly, we need to determine which of the assigned names should take precedence under our classification norms—a legal question that adds to the complexity.
Who’s Included and Who’s Excluded?
A brief reminder about Denisovans: they are an enigmatic group of humans initially identified in 2010 from fragments of a finger bone discovered in the Denisova Cave in Siberia’s Altai Mountains. Genetic analysis revealed they were distinct from both modern humans and Neanderthals. Moreover, many contemporary individuals, especially in Southeast Asia and Melanesia, carry Denisovan DNA.
This suggests that Denisovans were quite widespread in East Asia over the past several hundred thousand years. So, where are the Denisovan fossils?
Fifteen years later, a handful of Denisovan fossils have been actively categorized. For example, mandibles discovered on the Tibetan Plateau were identified through fossil proteins and sediment DNA. Similarly, a jawbone retrieved from the Pengle waterway off the coast of Taiwan was confirmed as Denisovan in April.
Nonetheless, we still lack a complete skeleton. Identifying the Harbin skull as Denisovan brought us closer to understanding their appearance, yet many more discoveries are necessary.
Numerous human fossils in East Asia potentially belong to Denisovans. However, categorizing these remains has proven challenging, as they often do not resemble established species like modern humans, Neanderthals, or even Homo Erectus. If adequate specimens surface, thus confirming their Denisovan identity, our understanding could significantly improve, leading to a formal classification.
But how do we determine which fossils are Denisovan? Ideally, we seek molecular evidence of preserved DNA or protein for comparison with the original Denisovan remnants. However, many fossils remain unanalyzed or inaccessible.
One notable effort to address this issue was a preliminary study submitted by a team led by Xijun Ni from the Chinese Academy of Sciences in March 2024. By comparing 57 human fossils for various physical traits, they constructed familial relationships between these findings.
The team found three primary groups among Eurasian hominins: Modern Humans, Neanderthals, and a third group composed of the original Denisovan fossil, the Tibetan cave jawbone, the Pengle jawbone, and the Harbin skull. This third category appears to represent those we refer to as Denisovans.
This is an intriguing proposition, but others disagree.
A collection of contentious fossils from Hualongdong, southern China, offers a wealth of material: an almost complete skull, 14 teeth, an upper jaw, six isolated teeth, and additional fragments dating back around 300,000 years.
While the NI team classified the Hualongdong specimens as part of the Denisovan group, a study led by Xiujie Wu in July suggested that these teeth did not show clear correlations, proposing instead that they may belong to a different hominin group. Another interpretation could be that the Denisovans at Hualongdong were somewhat disparate from those in other regions.
In the meantime, other intriguing fossils from Asia continue to emerge. Among them are specimens from Dariscal and Jinniushan, both around 260,000 years old, which Ni’s team has suggested might also belong to the Denisovan lineage.
As the list of contending Denisovan fossils grows, we must decide how to categorize them.
The Harbin Skull
Hebei Geo University
Homo — What Does It Mean?
Interestingly, I was part of the team that described the Harbin skull in 2021, and we named it Homo Longhi. So, could that be the name we assign to Denisovans?
However, last year a competing proposition was put forth by Woo and Christopher Beh from the University of Hawaii, who suggested that we should center around fossils from Xujiayao in northern China, proposing to call this new species Homo Jurensis—fossils that would include the original Denisovan findings.
This idea’s strength lies in the resemblance of Xujiayao fossils to Denisovan remains, a point also observed by the NI team. However, Bae and Wu aimed to designate the Xujiayao fossils as “type specimens.”
This raises two issues: the classification of fossils and the naming protocols. Let’s examine each aspect separately.
In classification, the Homo Jurensis proposal faces challenges. Bae and Wu classify the Harbin skull as Homo Jurensis or Denisovan, yet it lacks sufficient resemblance to warrant such designation. A study published in June demonstrated molecular evidence clearly linking the Harbin skull to Denisovans. Hence, identifying those fossils as Denisovan would contravene objective realities, making Homo Jurensis seem unfounded.
What about taxonomy? This area is intricate. A crucial factor is the concept of priority, where the first proposed name tends to gain precedence. Hence, Homo Longhi might likely take precedence over Homo Jurensis as it was suggested three years earlier.
Are there alternative names for Denisovans?
The excavators of Denisova Cave never formally classified Denisovans as a distinct species. Anatoly Derebianco, part of that team, suggested the name Homo Sapiens Altaiensis, implying they would serve as a modern human subspecies—yet this proposal lacked formal status, rendering it typically insignificant.
This year, Derebianco has published a series of papers discussing what Denisovans could be. His references include locations in Mongolia, Uzbekistan, Tajikistan, and Iran, referring to them collectively as Homo sapiens denisovan. I remain unsure if formal explanations were provided, as only abstracts were published, and if completed, it occurred post the naming of Homo Longhi.
Lastly, it’s possible that one of the names was assigned to an Asian human fossil within an obscure publication decades ago. If the fossil is ultimately identified as Denisovan, the name takes precedence (assuming it was adequately introduced). Nevertheless, Wu, Bae, Ni, and others assessed this notion in 2023 and concluded that many crucial fossils were not appropriately named. For instance, there was a suggestion to label Dali’s skull as Homo Dariensis, yet such ideas amounted to informal statements rather than formally recognized classifications.
Your head might be swirling from this cascade of names and species classifications, so let’s recap: the critical takeaway is our evolving understanding of Denisovans, which brings us closer to officially designating their name.
Given our comprehension of taxonomic norms and their significance, Homo Longhi could emerge as the official designation. Although I can’t influence the decision, they will always remain Denisovans in my mind.
Arts, creative, and media organizations are urging the government to prohibit large tech companies from using Australian content and developing artificial intelligence models. There is growing concern that such a decision may “betray” Australian workers and facilitate the “widespread theft” of intellectual property.
The Albanese government has stated that it has no intention of altering copyright laws, but emphasizes that any changes must consider their effects on artists and news media. Opposition leader Sassan Ray has called for compensation for any use of copyrighted material.
“It is unacceptable for Big Tech to exploit the work of Australian artists, musicians, creators, and journalists without just compensation,” Ray asserted on Wednesday.
The Productivity Committee’s interim report titled “Utilizing Data and Digital Technology” proposes regulations for technologies, including AI in Australia, projecting a productivity increase of 0.5% to 13% over the next decade, thereby potentially adding $116 billion to the nation’s GDP.
The report highlighted that building AI models demands a substantial amount of data, prompting concerns from many players, including Creative Australia and copyright agencies, about the misuse of copyrighted content for AI training.
The committee outlined potential solutions, advocating for an expansion of licensing agreements, exemptions for “text and data mining,” and enhancements to existing fair trading regulations that are already in place in other countries.
This latter suggestion faced significant opposition from arts, creative, and media organizations. They expressed discontent at the idea of allowing wealthy tech companies to utilize their work for AI training without appropriate compensation.
Such a shift could jeopardize existing licensing agreements formed between publishers and creators with major tech firms and complicate negotiations for news media seeking fair compensation from social media platforms for journalism online.
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The Australian Labour Union Council (ACTU) criticized the Productivity Committee’s proposal, claiming it exploits the interests of large multimillion-dollar corporations, warning that it may mislead efforts to assist Australian workers.
“The extensive discussion surrounding text and data mining exemptions risks normalizing the theft of creative works from Australian artists and Indigenous communities,” said ACTU.
Joseph Mitchell, ACTU Secretary, indicated that such exemptions would allow “high-tech corporations to reap the full benefits of advanced technology without giving back to the creators.”
APRA Chair Jenny Morris is among those who have voiced concerns over potential exemptions for “text and data mining” used in AI training. Photo: AAP
Australia’s music rights organizations, Apra Amcos and the National Aboriginal and Torres Strait Islander Music Bureau, expressed disappointment regarding the committee’s recommendations, raising alarms about the implications for Australia’s $9 billion music sector.
APRA Chair Jenny Morris stressed that this recommendation highlights a recognition that these practices are already widespread.
Attorney General Michelle Roland, responsible for copyright legislation, stated that any advancements in AI must prioritize building trust and confidence.
“Any reforms to Australia’s copyright law must reflect the effects on the nation’s creative and news sectors. We remain dedicated to participating in dialogues around these issues, particularly with the copyright and AI reference groups initiated by the government last year,” she mentioned.
When asked about the committee’s findings, Ray expressed concern regarding the absence of sufficient “guardrails” from the government to tackle AI-related issues.
“We need to safeguard content creators… their work rightfully belongs to them, and we must not take it without compensating them,” she added.
Ed Fushik, former Minister for Industry and Technology for Workers, defended the overall outlook for the economy on Wednesday. Treasurer Jim Chalmers later commented on ABC’s 7.30, saying, “The mechanism you deploy, whether one act or multiple existing acts… is not the crux of the issue.”
“I believe we can strike a balance between concerns that AI is harmful and those who pretend we can return to a previous state,” he indicated.
“There are no current plans to undermine or alter Australia’s copyright arrangements.”
Arts Minister Tony Burke highlighted a submission from Creative Australia regarding the review. He stated that, “It emphasizes the necessity for consent, transparency, and fair compensation concerning copyright and labeling.”
In a statement, Creative Australia asserted that the nation has the potential to lead globally in establishing “fair standards” for AI application.
“Artists and creatives whose work is utilized in training AI are entitled to proper compensation,” a spokesperson remarked.
“Innovation should not come at the cost of ethical business practices.”
The Australian Publishers Association (APA) has expressed worries about the possibility of works being utilized without authorization or compensation.
“While we support responsible innovation, this draft proposal favors infringers over investors,” stated Patrizia Di Biase-Dyson, CEO of APA.
“We oppose the idea that Australian narratives and educational materials integral to our culture and democracy should be treated as free resources for corporate AI systems.”
The copyright agency likewise spoke against the text and data mining exemption, emphasizing that it would adversely affect creators’ revenue.
“The movement towards revision of the Australian copyright system stems from large multinational corporations, and it does not serve the national interest,” remarked CEO Josephine Johnston. “To empower Australia’s high-quality content in the new AI era, it’s critical that creators receive fair compensation.”
Anger has surged on Chinese social media following reports of online groups, reportedly comprising hundreds of thousands of men sharing unauthorized photos of women, including explicit images.
A report published last week by Southern Metropolis outlined a group on the encrypted messaging app Telegram, known as the “Mask Park Tree Hall Forum.” This group boasts over 100,000 members and claims to be “exclusively composed of Chinese men.”
These individuals allegedly circulated sexually explicit images of women, captured either in private settings or through hidden cameras disguised as everyday objects such as plug sockets and shoes.
The incident has drawn parallels to South Korea’s “nth room” scandal, where women were coerced into sharing explicit photos within a Telegram group.
While Telegram is blocked in China, users can still access it via a virtual private network (VPN) that bypasses location restrictions.
The hashtag linked to the scandal had garnered over 110 million views on Weibo by Thursday. However, there are signs of censorship, as some related searches yield results indicating, “According to relevant laws and regulations, this content cannot be viewed.” Earlier reports from Reuters noted the hashtag received over 270 million views.
“Women’s lives are not a male erotic novel,” commented one user on Xiaohongshu, a platform similar to Instagram.
Another user on Xiaohongshu remarked:
In South Korea, the leader of the chat group received a sentence of 40 years in prison.
In China, those who photograph individuals without consent face penalties of up to 10 days of detention and a fine of 500 yuan (£53). Disseminating pornographic material can lead to prison sentences of up to two years.
The Mask Park scandal isn’t an isolated incident; last year, a tech company owner in Beijing was found to have secretly recorded over 10,000 videos of female employees in the bathroom, receiving only a 10-day detention as punishment. “Ten days are merely encouragement,” remarked one Weibo user.
Criminal law professor Lao Dongyan from Tsinghua University stated on Weibo that Chinese law treats unauthorized filming as an indecent crime, rather than a violation of women’s rights.
“Women who are secretly filmed are the primary victims. Reducing their experiences to indecency material is equivalent to categorizing them as participants in pornographic content, which is absurd,” Rao commented.
As authorities continue to limit civil discourse and behaviors, addressing feminism and women’s rights in China becomes increasingly challenging. Nonetheless, some women have discovered ways to counteract misogyny publicly, including through comedy.
In a recent episode of the popular stand-up show The King of Standup Comedy, comedian Huang Yijin humorously mentioned putting on makeup alone in his hotel room.
The early season heatwaves scorched much of the West, resulting in dangerously high temperatures and prompting extreme heat warnings lasting from Friday through Saturday. Southern Nevada saw widespread triple-digit highs, with Death Valley expected to surpass 115 degrees.
Weeks ahead of the official start of summer, we intensified the union message. The organization’s signage campaign aims to address the far-reaching effects of Doge layoffs and budget cuts on the nation’s beloved national parks. In the Southwest, this translates to zero tolerance for extreme heat, according to Shaquille.
“We had to adapt our message to connect with people directly,” he stated.
Results from the National Park Service’s budget cuts are still pending, especially with the peak summer tourist season on the horizon.
Abigail Wine, deputy director of Death Valley National Park, mentioned that park staff are committed to ensuring public safety and raising awareness about the hazards of extreme heat. She urged visitors to take necessary precautions before heading to Death Valley, such as checking weather warnings, verifying closures, and packing adequate water, sunscreen, and other essentials.
“As always, the National Park Service is dedicated to providing visitors with an incredible, safe, and unforgettable experience at Death Valley National Park and throughout the country,” Wines informed NBC News in a statement.
The broader objective of achieving a more perfect union in the Billboard campaign is to spotlight Doge’s controversial actions and the significant cuts instituted by the Trump administration to federal agencies. Shaquille noted that the organization strategically leveraged the bipartisan support enjoyed by national parks to ignite discussion.
According to a 2024 Population Survey from Pew Research Center, the National Park Service ranks as the most favored federal agency, with a favorable rating of 76% among over 9,400 Americans surveyed.
“Many of the locations where we placed our signs are in areas assumed to lean Republican, where a significant number of people likely voted for Donald Trump. Even the Doge component resonates,” Shaquille explained. “But national parks serve as a perfect example of where the limits were overstepped.”
Pterosaurs often glide above dinosaurs, but recent analysis of fossilized footprints indicates that some of these flying reptiles were equally adept at traversing the ground.
Terrestrial migration and tracking morphology of vegetative eye type skeletal morphology: (a) Reconstruction of the ctenochasmatoid orbit Ctenochasma elegans walking with ipsilateral gait, where the fore and hind legs on the same side of the body move together. (b) Manual and pedal morphology of Ctenochasma elegans; PES is plant and pentadactyl, while Manus is digital grade, functionally triductyl as the large fourth digit supporting the outer wing is folded during terrestrial movement. (c) Height map of pterosaur manus and PES footprints in the holotype of Ichnotaxon Pteraichnus stokesi that matches Ctenochasma elegans; (d) height maps from the Pterosaur trackway; Pteraichnus ISP. From the Upper Jurassic Casal Formation of Claysac, France. An outline drawing of (e) interpretation Pteraichnus ISP. Scale bar – 20 mm in (c), 200 mm in (d) and (e). Image credit: Smith et al., doi: 10.1016/j.cub.2025.04.017.
“We have been diligently working to enhance our understanding of their lives,” stated Robert Smith, a doctoral researcher at the University of Leicester.
“These footprints offer insights into their habitat, movement, behaviors, and activities in ecosystems long gone.”
In this study, Smith and colleagues uncovered three distinct types of pterosaur footprints, each elucidating various lifestyles and behaviors.
Tying these footprints to specific groups presents a valuable new avenue for exploring how these flying reptiles lived, migrated, and adapted over time across different ecosystems.
“At last, 88 years after the initial discovery of Pterosaur tracks, we understand precisely who made them and the methods employed,” remarked Dr. David Unwin, Ph.D., from Leicester.
The most striking finding emerged from a group of pterosaurs known as Neoazdalci. Quetzalcoatlus, one of the largest flying creatures, boasts a wingspan of 10 meters.
Their footprints have been found in both coastal and inland regions worldwide, supporting the notion that these tall creatures not only ruled the skies but also cohabited the same environments as many dinosaur species.
Some of these tracks date back to an asteroid impact event 66 million years ago, alongside the extinction of both pterosaurs and dinosaurs.
Ctenochasmatoids, recognized for their elongated jaws and needle-like teeth, predominantly left tracks in coastal sediments.
These animals likely traversed muddy shores or shallow lagoons, employing specialized feeding techniques to capture small fish and floating prey.
The prevalence of these tracks indicates that these coastal pterosaurs were far more common in these habitats than the infrequent fossil remains suggest.
Another type of footprint was unearthed in rock formations, alongside the fossilized skeleton of the same pterosaur.
The close correlation between footprints and skeletons provides compelling evidence for identifying the print makers.
Known as Dsungaripterids, these pterosaurs featured robust limbs and jaws; the tips of their curved, toothless beaks were designed for grasping prey, while the large, rounded teeth at the rear of the jaw were ideal for crushing shellfish and other resilient foods.
“Footprints are frequently overlooked in Pterosaur studies, yet they yield a wealth of information regarding their behavior, interactions, and environmental relationships,” stated Smyth.
“A comprehensive analysis of the footprints enables us to uncover biological and ecological insights that cannot be obtained elsewhere.”
The team’s paper is published in the journal Current Biology.
____
Robert S. Smith et al. Identifying Pterosaur track makers provides important insights into Mesozoic ground invasions. Current Biology Published online May 1, 2025. doi: 10.1016/j.cub.2025.04.017
Pterosaurs often glide above dinosaurs, but recent examinations of fossilized footprints reveal that some of these flying reptiles were equally adept at terrestrial movement.
Terrestrial migration and tracking morphology of vegetative eye type skeletal morphology: (a) Reconstruction of the ctenochasmatoid orbit Ctenochasma elegans walking with an ipsilateral gait, where the fore and hind legs on the same side move together as a pair. (b) Manual and pedal morphology of Ctenochasma elegans; PES is plant and pentadactyl, while Manus is digital grade, functionally triductyl as the large fourth digit supporting the outer wing is folded during terrestrial movement. (c) Height map of pterosaur manus and PES footprints in the holotype of Ichnotaxon Pteraichnus stokesi, showing a form that matches Ctenochasma elegans; (d) height maps from part of the Pterosaur trackway; Pteraichnus ISP. From the Upper Jurassic Casal Formation of Claysac, France. An outline drawing of (e) interpretation of Pteraichnus ISP. Scale bar – 20 mm in (c), 200 mm in (d) and (e). Image credit: Smith et al, doi: 10.1016/j.cub.2025.04.017.
“We have been diligently working to enhance our understanding of these creatures,” stated Robert Smith, a doctoral researcher at the University of Leicester.
“These findings provide insights into their habitats, movement patterns, and daily activities in ecosystems long since vanished.”
In this research, Smith and his team identified three distinct types of pterosaur footprints, each offering insights into various lifestyles and behaviors.
By correlating footprints with specific groups, a robust new method emerges to study how these flying reptiles thrived, migrated, and adapted to diverse ecosystems over time.
“Finally, 88 years after the initial discovery of Pterosaur tracks, we have pinpointed precisely who created them and how,” remarked Dr. David Unwin, Ph.D., from Leicester.
Perhaps the most striking revelation comes from a group of pterosaurs known as Neoazdalci. Quetzalcoatlus, one of the largest flying creatures, boasts a wingspan of 10 meters.
Their footprints have been found in both coastal and inland areas worldwide, supporting the theory that these long-legged animals not only soared through the skies, but also inhabited the same environments as numerous dinosaur species.
Some of these tracks date back to an asteroid impact event 66 million years ago, coinciding with the extinction of both pterosaurs and dinosaurs.
Ctenochasmatoids, recognized for their elongated jaws and needle-like teeth, left footprints primarily found in coastal sediments.
These animals likely walked along muddy shores or shallow lagoons, employing unique feeding strategies to capture small fish and floating prey.
The prevalence of these tracks suggests that these coastal pterosaurs were far more common in these habitats than than the rare fossilized remains.
Another type of footprint was located in rock formations, where fossilized remains of the same pterosaur were also found.
The close association between footprints and skeletons offers compelling evidence for identifying the track makers.
These pterosaurs, known as Dsungaripterids, possessed robust limbs and jaws; their toothless, curved beaks were adept at securing prey, while their large, rounded teeth were ideal for crushing shellfish and other resilient foods.
“Footprints are often overlooked in Pterosaur studies, yet they yield a wealth of information about the behaviors and interactions of these creatures with their environment,” emphasized Smyth.
“A detailed analysis of these footprints allows us to uncover biological and ecological insights that other methods may not provide.”
The team’s paper was published in the journal Current Biology.
____
Robert S. Smith et al. Identifying Pterosaur track makers provides crucial insights into Mesozoic terrestrial invasions. Current Biology, published online on May 1, 2025. doi: 10.1016/j.cub.2025.04.017
One significant distinction between certain members of the dispersed spider hacking community and their ransomware counterparts is their accent.
The scattered spiders are connected to the cyberattacks on the British retailer Marks & Spencer. Unlike typical ransomware attackers, the individuals involved seem to be native English speakers, rather than hailing from Russia or former Soviet nations.
This linguistic advantage supports one of their techniques, which Russian hackers may find difficult to emulate. They can infiltrate systems by calling company desks and impersonating employees or by contacting employees while posing as someone from their company desk.
“Being a native English speaker can foster immediate trust. Even internal staff and IT teams may let their guard down slightly due to perceived familiarity,”
Last November, the U.S. Department of Justice shed light on some suspected spider members by charging five individuals for targeting an unidentified American firm through a phishing text message.
The DOJ alleged that the accused sent fraudulent texts to employees, tricking them into divulging sensitive information, including company logins. This breach resulted in the theft of sensitive data, including intellectual property, and significant sums of cryptocurrency from digital wallets.
All the accused were in their 20s at the time of the allegations, with four of them aged between 20 and 25, and Tyler Buchanan, 23, from Scotland, who was extradited from Spain to the U.S. last week. He is set to appear in court in Los Angeles on May 12th.
The U.S. Cybersecurity Agency detailed the scattered spider IT desk strategy in an advisory released in 2023.
Notable ransomware victims of scattered spider attacks include casino operators MGM Resorts and Caesars Entertainment, which were targeted in 2023. Following the attacks, the West Midlands police arrested a 17-year-old in Walsall last year. They have been contacted for further updates on this incident.
The scattered spider was identified as responsible for the M&S breach by BleepingComputer, a high-tech news platform. The report indicated that the attackers employed malicious software known as Dragonforce to compromise parts of the retailer’s IT network.
These incidents are categorized as ransomware attacks because the attackers typically demand substantial payments in cryptocurrency to restore access to compromised systems. Leveraging ransomware from other gangs is a common occurrence, known as the model of ransomware-as-a-service.
Analysts from cybersecurity firm Recorded Future remarked that “scattered spiders” is more of an “umbrella term” rather than a specific group of financially motivated cybercriminals. They noted it stemmed from “The Com” rather than “monolithic entities,” and is engaged in various criminal activities, including sextortion, cyberstalking, and payment card fraud.
“We operate within a channel and affiliate marketing framework, primarily on platforms like Discord and Telegram, mostly in exclusive invitation-only channels and groups,” stated the analyst.
Ciaran Martin, former head of the UK’s National Cybersecurity Centre, remarked that scattered spiders are “unusual” given their non-Russian origins.
“The vast majority of ransomware groups originate from Russia. [Scattered Spider] seems to have utilized Russian code for this attack with Dragonforce, but notably, they appear to be based here and in the U.S., which may facilitate their arrest.” Martin, now a professor at Brabatnik Government School at Oxford University, added:
Martin further emphasized that the youthful infamy of scattered spiders should not diminish the threat they pose. “They are indeed a rare but quietly menacing group,” he noted.
Paleontologists looked at the teeth Teleoce’s major – Found in an extinct species of nasal bacteria that lived in North America from 17.5 million to 5 million years ago. Ash falling fossil bed Nebraska, USA. Here, over 100 Teleoce’s major The individual in a single hole died and was buried in ashes from the eruption of Yellowstone’s superintendent.
The flock of Teleotheras Sister. Image credit: Jay Matternes/Smithsonian Museum.
Since discovering the rhinoceros at Nebraska’s Ashwood Fossil Bed State Park in 1971, researchers have wondered what attracted so many animals in the same location.
Did they converge from afar? Perhaps they sought shelter from natural disasters that unfolded volcanic eruptions with those asphyxiation ash?
“We found out they weren’t moving much,” said Clark Ward, a researcher at the University of Minnesota.
“We found no evidence of seasonal migration or disaster response.”
Ward and colleagues looked at the ratio of strontium, oxygen and carbon isotopes Teleoce’s major Teeth tracking long, operating animal movements across the landscape.
“By studying the carbon of animals, we can reconstruct the carbon of our environment and understand what kind of vegetation lived there,” Ward said.
“You can use it to reconstruct how wet and dry the environment is.”
“And strontium tells us where the animals are forged because isotopic ratios are associated with soil and supporting bedrock.”
Teleoce’s major It was a one-horned rhino with a barrel-shaped body and sturdy hippo-like legs. Like hippos, they ate grass.
And, like hippos, researchers believe that these rhinoceros have spent a lot of time in and around the water.
Due to their vast size, they had few predators during the Miocene era.
However, their calves would have been vulnerable to predators like hyenas, known as bone-breaking dogs.
In fact, some of the specimens found on the Nebraska site have evidence that the scavenger removed some of the bodies after its death. And ancient trucks from a 45 kg (100 pound) dog are found there.
The giant Yellowstone volcano has erupted many times over the past 12 million years.
“The ashes from the eruption traveled 1,127 km (700 miles) in what is now Nebraska, where they piled up in snow, like snow,” Ward said.
“But the ashes that were blown by the wind continued to fall into Nebraska, long after the first eruption.”
“The ashes would have covered everything: grass, leaves, water.”
“Reconstructing how we equip the ancient landscapes that have disappeared provides an important context for understanding their paleoecology and sociality, and the environment in which they lived,” the scientists concluded.
Their paper Published in the journal Scientific Report.
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CT Word et al. 2025. Enamel carbon, oxygen and strontium isotopes reveal limited mobility in extinct rhinoceros in Ashford Fossil Bed, Nebraska, USA. Sci Rep 15, 11651; doi:10.1038/s41598-025-94263-z
National Health Secretary Robert F. Kennedy Jr. on Saturday instructed leaders of the nonprofit organization he founded to mimic the design of the Centers for Disease Control and Prevention site, but to remove web pages that mimic cases where the vaccine causes autism.
The page was published on a site that is clearly registered in the Child Health Defense of the nonprofit Anti-Vaccination Group. Kennedy’s actions came after the New York Times asked about the page and then it bouncing off all over social media.
The page was taken offline on a Saturday night.
“Committee Kennedy has directed the Advisory Bureau to send formal demand to children’s health defenses requesting the removal of their website,” the Department of Health and Human Services said in a statement.
“At HHS, we are dedicated to restoring the institutions to a tradition that supports science based on gold standard evidence,” the statement said.
It was not clear why the anti-vaccine group released a page mimicking the CDC. The organization did not respond to requests for comment, and Kennedy said it cut ties with the presidential election in 2023.
The fake vaccine safety page was virtually indistinguishable from what is available on CDC’s own site. The layout, typeface and logo were the same, and probably violated federal copyright laws.
The CDC’s own website refutes the relationship between vaccines and autism, but fraudsters leave the possibility of existence open. The bottom included a link to video testimony from parents who believed their child was harmed by the vaccine.
The page was first published Reported on Substack by E. Rosalie LiFounder of Information Epidemiology Lab. The nonprofit did not immediately respond to requests for comment.
For many years, Kennedy has argued that there is a link between vaccines and autism. He held that stance during the Senate confirmation hearing despite extensive research exposing the theory.
Under his direction, the CDC recently announced plans to review the evidence. This is a waste of money from Senator Bill Cassidy, a Louisiana Republican and chairman of the Senate Health Committee.
Online at Mock Web Pages is the familiar blue banner from CDC above, featuring the agency’s blue and white logo and the term “vaccine safety.” The headline read “Vaccinations and autism.”
The text supported the link between vaccines and autism, laid out both the exposed research, but left it announced the possibility that it had been countered by scientists.
This included citations to research by Brian S. Hooker, chief science officer for child health defense, as well as other studies critical of vaccination.
“This is a mix of legally peer-reviewed and fake,” said Dr. Bruce Guerin, who oversaw HHS’ vaccine programs for the Bush and Obama administrations.
“Footnotes give the impression that it’s a legitimate scientific work,” he added.
The series of testimonies at the bottom of the page featured videos with titles such as “Mother of 3: I Will Will Will Wild Again” and “We Signed His Life.”
This is in stark contrast to CDC officials. Autism and Vaccine Websitewhich is primarily devoted to exposing connection ideas, clearly saying, “study shows no links.”
Recently, Children’s Health Defense has faced the outbreak of measles in West Texas.
The organization’s CHD.TV channel posted an on-camera interview with the parents of a six-year-old girl who was declared dead from measles by the state health department.
The child was not vaccinated and had no underlying medical conditions. According to the health organization. However, they claimed that children’s health defenses had obtained hospital records that conflict with the cause of death.
The organization also handled the girl’s siblings and interviewed Dr. Ben Edwards, one of two Texas doctors.
In response to the video, Covenant Children’s Hospital in Lubbock, Texas issued a statement this week that “recent videos are circulating online and contain misleading inaccurate claims,” saying the confidentiality law does not prevent hospitals from providing information specifically relating to cases.
Over the past 20 years, a general view of human evolutionary genetics is Homo sapiens It first appeared in Africa about 200,000 to 300,000 years ago, and descended from a single lineage. However, a new study from the University of Cambridge shows that modern humans are the result of two groups (potentially HOMO HEIDELBERGENSIS and Homo Erectus) It branched out 1.5 million years ago and gathered at a mixed event 300,000 years ago at an 80:20% ratio.
a HOMO HEIDELBERGENSISNeanderthals and Cromagnone. Image credit: Sinc/José Antonio Peñas.
“The question of where we came from has been something that has captivated people for centuries,” said Dr. Trevor Cousins of Cambridge University.
“For a long time, it has been assumed that we evolved from a single, consecutive ancestor lineage, but the exact details of our origins are uncertain.”
“Our research shows clear indications of the origins of our evolutionary being more complex, including various groups that have developed individually over a million years, and have since returned to form modern human species,” added Richard Durbin, a professor at Cambridge University.
Previous studies have already shown that Neanderthals and Denisovans are mated, but Homo sapiens About 50,000 years ago, new research suggests that a much more important genetic mixing occurred long before these interactions were about 300,000 years ago.
Unlike Neanderthal DNA, which makes up about 2% of the genome of non-African modern humans, this ancient mixed event contributes ten times its amount and is found in all modern humans.
The team's methods rely on analysis of modern human DNA rather than extracting genetic material from ancient bones, allowing us to infer the existence of ancestral populations that otherwise left no physical traces.
The authors developed a computational algorithm called Cobraa, which models the methods that ancient populations fell apart and later integrated.
They tested the algorithm using simulated data and applied it to real human genetic data from the 1000 Genomes project, a global initiative that sequences DNA from populations in Africa, Asia, Europe and America.
Researchers were able to identify these two ancestral populations, but also identified some impressive changes that occurred after the two populations were initially decomposed.
“At the moment the two ancestral populations split, we see a serious bottleneck in one of them, suggesting that it had been reduced to a very small size before slowly growing over a million years,” said Professor Aylwyn of Cambridge University.
“This group later contributed to about 80% of modern human genetic material and also appeared to be a population of ancestors that diverged the Neanderthals and Denisovans.”
“However, some of the population genes that contributed to our small numbers of genetic material, especially those associated with brain function and neural processing, may play an important role in human evolution,” Dr. Cousins said.
This is a reconstruction of the artist Homo Erectus. Image credit: Yale University.
Scientists also found that genes inherited from the second population are often separated from the genome regions associated with gene function, suggesting that they may be less compatible with numerous genetic backgrounds.
This suggests a process known as the cleansing of selection, in which natural selection removes harmful mutations over time.
So who was our mystical human ancestors? Fossil evidence suggests species such as Homo Erectus and HOMO HEIDELBERGENSIS Although he lived in both Africa and other regions during this period, becoming a potential candidate for these ancestral populations, more research (probably more evidence) is needed to identify which genetic ancestors correspond to which fossil groups.
The authors hope to refine the model to explain more progressive genetic exchanges between populations rather than sharp divisions or reunions.
They also plan to explore how their findings relate to other anthropology discoveries, such as fossil evidence from Africa, suggesting that early humans may have been much more diverse than previously thought.
“It's amazing to see today's DNA and reconstruct events that were hundreds of thousands or millions of years ago,” Professor Scally said.
“And we can tell you that our history is much richer and more complicated than we imagined.”
study It was published in the journal today Natural Genetics.
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T. Cousins et al. The structured coalescence model reveals the deep ancestral structure shared by all modern humans. Nat GenetPublished online on March 18th, 2025. doi:10.1038/s41588-025-02117-1
Up-and-coming social app BeReal continues to attract users’ attention by adding more and more bells and whistles. next week, Bereal is rolling out two major new features: Behind the Scenes and RealGroups. Behind the Scenes is an iOS Live Photo-like feature that shows you a few seconds of video recorded just before you take the photo. RealGroups lets you share BeReal with a small group of friends and allows you to send messages directly within that group.
Behind the Scenes (BTS) is an opt-in feature that borrows a lot in UX from the way Apple set up Live Photos on the iPhone. When your friend enables her BTS and posts her BeReal, you will see a Live Photo symbol in the top corner of the image. If you press and hold this, you can watch a few seconds of video leading up to the BeReal photo.
The app is designed to connect you with your already close friends as it asks you to share your front and back camera photos at random times every day. You won’t be able to see other people’s posts unless you create her own BeReal posts. BeReals tend to be more unfiltered and — Because I can’t find any better words — It’s real, because you’re being prompted to take a photo at an unknown time (but if you get a notification to post while you’re in the bathroom… you might just post late). But now, BeReal is creating an experience for even closer friends. Start a RealGroup to share your BeReals more privately. To sweeten the deal, group admins will now be able to choose when daily notifications are sent. You can also DM BeReals within the group, but a group chat is also available. This is likely to be used to anger administrators who have chosen an inappropriate “BeReal time.” However, he can only belong to two groups, so choose carefully.
“Going off to college and missing your close friends from home? Create a RealGroup to stay close, share your dorm life adventures, see what’s going on at home, and stay connected no matter how far away you are.” Stay close to me even when you are away!!” BeReal wrote in a blog post.
BeReal is now on the brink of life or death. Will apps survive the hype cycle or will they fade away? According to Pew’s annual survey on teens and social media. 13% of US teens ages 13 to 17 have used BeReal. However, BeReal has rejected data from external sources in the past. In September, app analytics company Similarweb told TechCrunch that BeReal has about 16 million monthly active users (MAUs), including about 3 million in the United States. However, Apptopia told TechCrunch that BeReal’s MAU in 2023 was at its highest in October at 8.73 million, and at its lowest in February at 7.96 million. BeReal itself reports that in April it had 20 million daily active users worldwide, and in September it had 25 million daily active users.
Although the app was relatively stagnant at first, BeReal has rolled out a ton of new features, including messaging, the ability to post more photos, Spotify integration, and a “friends of friends” discovery feed. . Soon, the app will add his 2023 Year in Review feature and tagging, making it easy to repost tagged content, similar to Instagram.
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