Orcas filmed tearing apart giant Sunfish with new hunting technique
Researchers have documented a previously unknown hunting behaviour in orcas in the Gulf of California. The animals were filmed working together to hold and ram giant sharp-tail sunfish until the carcass broke into thousands of pieces. Scientists believe the behaviour may help younger orcas feed more easily or could simply be play.
Climate change is driving beavers into Canada's Arctic, where they are reshaping the landscape
A new study has traced the northward expansion of North American beavers into Canada's Arctic by analysing shrub growth scars and satellite images. Researchers found evidence of colonisation beginning in 2008 and say the method can help track wildlife spread, landscape changes and the effects of climate change in remote Arctic regions.
Scientists found a 2,865-pound predator from before dinosaurs ruled Earth
In an exciting collaboration, over 2,000 public volunteers are meticulously cleaning a colossal 1,300-kilogram fossilized skeleton of a Mastodonsaurus, an ancient amphibian that roamed the Earth 240 million years ago. Armed with specialized tools and ultraviolet light, these dedicated individuals are uncovering the mysteries of our planet's history. The spectacular skeleton is expected to be on display by October or November, showcasing humanity's connection to a distant past.
A tapeworm infects ants and makes them live several times longer by turning their bodies into...
In Germany, tiny ants exhibit extended lifespans thanks to a parasitic tapeworm that cleverly alters their genetics to mimic queen ant biology. As these infected workers become less active and quieter in their nests, the parasite enhances its chances of survival by manipulating the ants' regulatory networks. This fascinating research sheds light on the complexities of genetic control related to aging processes.
Invasive plants may be boosting mosquito numbers in lower-income areas
Recent studies indicate that invasive trees in economically disadvantaged neighborhoods of Baltimore and Washington D.C. are contributing to a rise in mosquito populations. The nonnative leaves serve as an excellent nourishment source for mosquito larvae, promoting faster growth and larger size, which ultimately enhances their ability to transmit diseases. This finding underscores the significance of plant quality over quantity in managing mosquito outbreaks.
Giant sequoias faced unprecedented losses in recent wildfire seasons. A NASA-funded study shows controlled burns dramatically improve their survival chances. Mature trees in treated forests were four times less likely to die. This practice minimizes fuel and allows fires to burn with lower intensity. Expanding prescribed burning programs is crucial for preserving these ancient giants.
25,000-year-old cave discovery reveals ancient Australian rituals
In Cloggs Cave, archaeologists have discovered evidence of ancient GunaiKurnai grass burning rituals that spanned 25,000 years. The findings, which include microscopic plant remnants, ash layers, and a remarkable standing stone, shed light on the deep-rooted spiritual connection that these ancient communities fostered with nature. This enduring practice highlights the intricate relationship between the environment and their spiritual ceremonial activities.
In 1955, Hawaii released a cannibal snail to control another invasive snail, but the predator
Hawaii introduced a predatory snail in 1955 to control pests, which then devastated native tree snails. Scientists now operate a snail emergency room to protect the remaining species. These colorful khuli snails were once abundant and culturally significant to Hawaiians. Captive breeding is slow, and efforts focus on predator-proof fences for reintroduction. Conservationists strive to prevent further extinctions, highlighting a global trend of human-induced endangerment.
A silent coral reef came back to life after scientists played recordings of healthy reefs underwater
In a groundbreaking conservation initiative, two endangered marsupial species are set to be reintroduced to Shark Bay. Recent research emphasizes the crucial role of fungal food sources in this process. Utilizing DNA analysis, scientists identified suitable fungi for the boodies and woylies, which are vital for spreading spores during their foraging activities. Their return will revitalize essential ecological dynamics that have been missing from Dirk Hartog Island for many years.
Astronomers warn millions of satellites could permanently brighten Earth's night sky
Ambitious satellite plans may significantly brighten Earth's night sky for all observers. European Southern Observatory researchers warn of potential impacts on astronomical studies. Millions of proposed satellites could collectively increase diffuse sky brightness, obscuring faint objects. Scientists suggest a balance is needed between satellite benefits and research impacts. Decisions made now will shape the future of astronomy for many years.
AI can become more biased than humans while choosing who gets hired; study finds
Artificial intelligence systems are increasingly used for hiring and recruitment tasks. New research shows these AI models can develop their own biases. This occurs as they learn from limited data and repeated hiring decisions. These AI systems create new stereotypes, not just inheriting them from training data. Fairness in AI hiring depends on system design and optimization strategies.
In an exciting scientific endeavor, researchers are exploring the idea of constructing a massive underwater curtain to defend Thwaites Glacier against warm ocean currents. This strategic barrier is intended to redirect these warmer waters, aiming to curb the glacier's swift melting. A recent expedition gathered vital information from the Amundsen Sea to determine the project's feasibility, while additional studies in Svalbard focus on understanding the environmental ramifications of the barrier.
Alaska's northern rivers are rapidly turning a vivid orange colour. Increased metal levels make the water toxic, harming fish and insects. Rural communities face risks to drinking water and food security. Scientists are mapping the spread and studying adaptation strategies for these changes.
Rising sea levels are making coastal flooding more common around the world; study finds
Coastal flooding is becoming more frequent globally due to rising sea levels. Extreme sea-level events now occur four times more often than a century ago. Human-caused warming has amplified the impact of tides and storms. Natural variations still influence local flood risk across coastlines. Communities must rethink flood planning based on these changing probabilities.
An artificial intelligence model has aided in identifying a potential solution to an 87-year-old mathematical problem. This development challenges the long-held view of mathematics as a solely human endeavor. Researchers are now exploring AI's potential as a partner in advanced mathematical research. The Jacobian conjecture, proposed in 1939, has resisted decades of human effort. While formal verification is pending, AI's role in creative mathematics is growing.
Why scientists kill 9 million sea lampreys every year in the Great Lakes of America
Invasive sea lampreys, or vampire fish, pose a serious threat to the native fish communities of the Great Lakes. These destructive predators made their way in through canals and now voraciously consume vast amounts of fish annually. Since 1957, the application of TFM has been a cornerstone in eradicating lamprey larvae. However, interruptions in management efforts have caused significant rebounds in lamprey numbers.
Why only a handful of cockroach species out of nearly 4,600 chose to live with humans
Michael Faraday noted that truly educational lectures are rarely popular. He experienced this tension firsthand as a celebrated lecturer himself. Popularity and deep understanding are measured on entirely different scales. Genuine learning often involves discomfort, confusion, and repeated questions. Modern platforms often prioritize speed over the depth of lasting knowledge.
With the advent of AI chatbots, people can now interact with digital renditions of those they've lost. These 'griefbots' serve to bring emotional healing and a sense of resolution to many, fulfilling critical emotional and social needs during the grieving process. Yet, their imperfections raise questions about overreliance on these interactions, as well as the broader ethical ramifications of employing such technology in human relationships.
Once considered extinct in New England, the American oystercatcher is experiencing a remarkable resurgence thanks to dedicated conservation efforts. These initiatives focus on safeguarding their nesting environments and raising community awareness. Techniques such as banding chicks and preventing disturbances in ground-nesting sites have proven successful. Their resilience, coupled with federal safety measures for related shorebirds, makes their comeback a testament to effective conservation in the face of climate change challenges.
Rare Woodhouse's Toad returns after 65 years, caught calling for a mate
A rare Woodhouse's toad has been spotted at Las Vegas' Springs Preserve for the first time in nearly 65 years. The male was recorded making a mating call in the restored wetland, marking the species' first confirmed return since the original springs dried up around 1962. Conservationists have called the sighting an important moment for local wildlife, while the public has joined in by suggesting names for the lone visitor.
Underwater drone found a coral reef written off in the 1960s still alive
Ealing borough in London has seen a successful return of beavers, who are tackling flooding issues head-on. By creating wetlands, these industrious animals have managed to retain excess rainwater during intense storms. Remarkably, the area surrounding Greenford station has remained safeguarded from flooding for three years. Additionally, this initiative has revitalized local ecosystems, drawing in diverse wildlife and exemplifying how natural interventions can solve pressing environmental problems.
Scientists tracked endangered Australian cockatoos for three breeding seasons and found...
The peril faced by Carnaby's black cockatoos is escalating, as pesticide contamination in their food reaches alarming rates. Testing of seed samples revealed that toxic chemicals present are hundreds of times higher than what is legally permissible. This exposure might shed light on the troubling paralysis syndrome afflicting these endangered birds. Furthermore, researchers identified neurotoxic substances banned in various regions of Europe.
Scientists found an anemone that can distinguish helpful bacteria from harmful bacteria without...
Sea anemones distinguish helpful bacteria from harmful invaders without antibodies. Specialized cell structures engulf and destroy foreign bacteria while preserving beneficial microbes. Gene editing revealed a key gene regulating this selective bacterial identification process. This discovery challenges long-held assumptions about early animal immune system evolution. These primitive pathways offer insights into ancient immune memory and maternal transfer.
A human-bred aquarium fish prized for its bright colour has escaped into a Philippines crater lake
Flowerhorn cichlids, bred by humans, have found their way into Lake Sampaloc, a crater lake in the Philippines. Their presence poses a significant threat to the local ecosystem, competing aggressively with native ayungin fish and disrupting aquaculture. Experts raise alarms about the potential for disease transmission and the rapid expansion of this invasive species, underscoring a pressing global issue of domesticated animals affecting natural habitats.
Scientists marked this coral reef as dead in the 1960s; underwater drones found it alive...
After being presumed extinct for sixty years, a remarkable coral reef off West Africa has been rediscovered, thriving with an array of fish and coral species. This vibrant mesophotic coral ecosystem thrives in low-light environments beneath the ocean's surface. Researchers speculate that similar hidden reefs could exist along the West African coastline, providing valuable insights into the evolutionary history of the region's marine life and past environmental changes.
Some species of mosquitoes in the UK spread avian malaria
In a landmark study, researchers have pinpointed certain mosquito species that spread avian malaria in the UK. Among twelve species analyzed, nine were found to harbor traces of this bird disease. Notably, the Ochlerotatus detritus mosquito is suspected to transmit Plasmodium vaughani to blackbirds, with additional species identified as potential carriers for parasites that threaten various native birds.
Hunters carried trout past waterfalls into fishless Norwegian mountain lakes 7,000 years ago
In a remarkable feat 7,000 years ago, ancient hunter-gatherers transformed Norwegian mountain lakes by introducing brown trout. Archaeologists discovered remnants of intricate fish traps from 5000 BC, highlighting how these early communities intentionally manipulated their ecosystems for sustainable food resources. They even transported live fish through rugged landscapes, paving the way for the fisheries we know today, where anglers still catch their ancient descendants.
Scientists warn AI-edited bird photos could create fake sightings and threaten biodiversity research
Nasa explores human hibernation for Mars, but major challenges remain
Laika, a stray dog, became the first living creature in Earth orbit aboard Sputnik 2. The spacecraft was built in haste and lacked any return system for the animal. Soviet officials initially claimed Laika survived for days before a peaceful death. However, a scientist later revealed she died within hours due to system failure. This mission accelerated American efforts to develop a human space program.
More than 2,200 years ago Greek scholars measured the Earth's size using only a stick and sunlight
Debris of asteroid shattered 800 million yrs ago may have bombarded Earth for 150 million yrs
A new study suggests that a giant asteroid breakup in the main asteroid belt about 800 million years ago may have triggered a long period of impacts across Earth, the Moon and Mars. Researchers linked the event to the Eulalia asteroid family and say it could explain ancient lunar craters. While the impacts coincided with major climate and biological changes on Earth, the study does not prove they caused them.
Big Bear Eagles need $10 million to protect their habitat before July 31
Thousands of people around the world are watching bald eagles Jackie and Shadow raise their two eaglets through a live nest camera in California's Big Bear Valley. As the chicks continue to grow, conservationists are also racing to raise $10 million to protect the surrounding habitat from development, highlighting the importance of preserving the forests and open spaces the eagles need to survive.
An exoplanet found 48 light-years away has given scientists hope for life, here's why
Scientists studied found flies rebuild their biological clock into a separate seasonal mode
In a fascinating discovery, scientists have found that fruit flies adapt their internal biological clocks to survive winter by employing a genetic mechanism known as the winter lock. This adaptation allows them to remain inactive until warmer weather arrives, showcasing a seasonal shift in their molecular structure. These insights not only open avenues for innovative pest control strategies but also enhance our understanding of seasonal variations in human health issues.
Mediterranean seagrass survives in dim seabed light by expanding its photosynthetic antenna
Scientists have discovered how the Mediterranean seagrass Posidonia oceanicahas adapted its photosynthetic system to survive in the dim, blue-green light of the seabed. The plant captures more light while moving energy more efficiently by altering its photosynthetic machinery. Researchers say the findings could help develop crop plants that make better use of limited sunlight under dense canopies.
Residents kept reporting Dolphins. Underwater microphones revealed their visits
Scientists from Kyoto University used underwater microphones to monitor dolphins in two bays along Japan's Sea of Japan coast. They found dolphin sounds only about once every 10 days, suggesting the animals visit these waters occasionally. The study also shows that long-term underwater listening can help scientists better understand and conserve marine life.
Warming seas are bringing octopus, red mullet and bream into UK waters
As the seas warm, British waters are now seeing an influx of Mediterranean species. This environmental transformation is compelling local fishers to modify their traditional techniques. Notably, octopus populations are surging, impacting native shellfish and depleting other seafood supplies. In response, chefs are creatively revamping menus to highlight these new arrivals like octopus and bream, balancing the challenges with exciting culinary possibilities.
Florida is planting 15,000 milkweeds along highways to help monarch butterflies
Scientists and transport officials in Florida have planted 15,000 milkweed plants along roadsides to help monarch butterflies survive and reproduce. Milkweed is the only plant on which monarchs lay their eggs, making it essential for their life cycle. The project also supports bees and other pollinators while testing whether roadside habitats can become long-term wildlife corridors across the state.
Archaeologists unearthed a rare 2,600-year-old Assyrian stele, a decade after ISIS damaged the city
A stunning 2,600-year-old Assyrian monument has surfaced in Nineveh, Iraq, celebrating the architectural feats of King Ashurbanipal. Unearthed amidst restoration efforts at the Shamash Gate, this stone artifact reveals essential details about Assyrian urban development. This significant find stands as a testament to the resilience of cultural identities, aiding in reconciling historical disruptions and preservation.
Earth has regulated its climate for 60 million years through a hidden ocean feedback
A new study has identified a natural process that may have helped keep Earth's climate stable for the past 60 million years. Researchers found that changes in sea level controlled the amount of phosphate reaching the oceans, affecting marine life, carbon burial beneath the seafloor and the level of carbon dioxide in the atmosphere. The findings offer a new explanation for how Earth naturally regulated long-term warming and cooling.
Scientists use teeth to trace childhood journeys of Africans freed from slave ships
A new study has uncovered the childhood origins of 152 Africans rescued from illegal slave ships and taken to Saint Helena nearly 200 years ago. Using tooth chemistry, ancient DNA and historical records, researchers found they came from different parts of Central Africa, with many forced to travel long distances before reaching the coast. The findings help restore the identities of people whose lives were erased by the transatlantic slave trade.
