Sharks Nearly Went Extinct 19 Million Years Ago From Mystery Event

Analysis of the fossil record shows a mysterious mass extinction that decimated the diversity of sharks in the world’s oceans, and they’ve never fully recovered.

#endangered-and-extinct-species, #fossils, #oceans-and-seas, #paleontology, #research, #science-journal, #sharks, #your-feed-science

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More Scientists Urge Broad Inquiry Into Coronavirus Origins

Researchers urge an open mind, saying lack of evidence leaves theories of natural spillover and laboratory leak both viable.

#coronavirus-2019-ncov, #laboratories-and-scientific-equipment, #research, #science-journal, #world-health-organization, #wuhan-institute-of-virology-china, #your-feed-science

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Covid Pandemic Demands Air Quality Changes in the Workplace, Researchers Say

The researchers issued a call to action to improve indoor air quality as a safeguard against the spread of contagions like the coronavirus.

#american-hospital-assn, #centers-for-disease-control-and-prevention, #coronavirus-2019-ncov, #coronavirus-risks-and-safety-concerns, #disease-rates, #heating-ventilation-and-cooling-hvac, #masks, #occupational-safety-and-health-administration, #science-journal, #water, #workplace-hazards-and-violations, #world-health-organization, #your-feed-healthcare

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Extraterrestrial Plutonium Atoms Turn Up on Ocean Bottom

The rare form of the element found on the Pacific seabed points to its violent birth in colliding stars.

#earth, #oceans-and-seas, #plutonium, #science-journal, #space-and-astronomy, #your-feed-science

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Meet the Other Social Influencers of the Animal Kingdom

Culture, once considered exclusive to humans, turns out to be widespread in nature.

#animal-behavior, #animals, #fish-and-other-marine-life, #monkeys-and-apes, #science-journal, #whales-and-whaling, #your-feed-animals, #your-feed-science, #zambia

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Imagine, Surgery Without a Scar

A new study shows that a 20-year-old drug prevents scarring in mice. If it works on humans, it could change the lives of those with disfiguring wounds.

#burns, #drugs-pharmaceuticals, #gurtner-geoffrey, #longaker-michael, #research, #science-journal, #skin, #stanford-university, #surgery-and-surgeons

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How Many Tyrannosaurus Rexes Ever Lived on Earth? Here’s a New Clue.

An estimation of the iconic predator’s total population can teach us things about dinosaurs that fossils cannot.

#dinosaurs, #endangered-and-extinct-species, #north-america, #paleontology, #research, #science-journal, #your-feed-animals, #your-feed-science

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The Water on Mars Vanished. This Might Be Where It Went.

Mars once had rivers, lakes and seas. Although the planet is now desert dry, scientists say most of the water is still there, just locked up in rocks.

#geology, #mars-planet, #oceans-and-seas, #research, #science-journal, #space-and-astronomy, #water

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How Do Blind Worms See the Color Blue?

Eyeless roundworms may have hacked other cellular warning systems to give themselves a form of color vision.

#bacteria, #color, #evolution-biology, #eyes-and-eyesight, #genetics-and-heredity, #hazardous-and-toxic-substances, #light, #research, #science-journal, #senses-and-sensation, #worms, #your-feed-science

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The Outsized Influence of Teen T. Rex and Other Young Dinosaurs

A deep dive into dinosaur data suggests that teenage T. rexes and other juvenile carnivores shaped their ecosystems.

#children-and-childhood, #dinosaurs, #endangered-and-extinct-species, #paleontology, #research, #science-journal, #teenagers-and-adolescence, #your-feed-animals, #your-feed-science, #youth

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A Famous Black Hole Gets a Massive Update

Cygnus X-1, one of the first identified black holes, is much weightier than expected, raising new questions about how such objects form.

#astrophysical-journal, #black-holes-space, #milky-way-galaxy, #science-journal, #space-and-astronomy, #stars-and-galaxies, #your-feed-science

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A Hitchhiker’s Guide to an Ancient Geomagnetic Disruption

A shift in Earth’s poles 42,000 years ago may have drastically altered the planet’s climate, scientists have found — and they’re naming the period after the author Douglas Adams.

#adams-douglas, #archaeology-and-anthropology, #earth, #endangered-and-extinct-species, #magnets-and-magnetism, #neanderthal-man, #ozone, #paleontology, #research, #science-journal, #your-feed-science

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Whale Songs Could Reveal Deep Secrets Beneath the Oceans

The aquatic mammals’ sound waves penetrate into the rocks under the waves, which could assist seismologists’ surveys.

#earthquakes, #endangered-and-extinct-species, #geology, #noise, #oceans-and-seas, #pacific-ocean, #science-journal, #whales-and-whaling, #your-feed-animals, #your-feed-science

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Childhood Colds Do Not Prevent Coronavirus Infection, Study Finds

New research casts doubt on the idea that prior infections with garden-variety coronaviruses might shield some people, particularly children, amid the pandemic.

#antibodies, #cell-journal, #colds, #coronavirus-2019-ncov, #disease-rates, #great-britain, #immune-system, #pennsylvania, #science-journal, #your-feed-science

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Coronavirus Will Resemble the Common Cold, Scientists Predict

Once immunity is widespread in adults, the virus rampaging across the world will come to resemble the common cold, scientists predict.

#colds, #disease-rates, #immune-system, #sars-severe-acute-respiratory-syndrome, #science-journal, #your-feed-science

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How Selfish Are Plants? Let’s Do Some Root Analysis

A new model further untangles the complex strategy games playing out under our feet.

#agriculture-and-farming, #flowers-and-plants, #gardens-and-gardening, #peppers, #research, #roots, #science-journal, #soil, #your-feed-science

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Biogen Conference May Have Spread Virus to 300,000

A February conference by the drug company Biogen was initially thought to have infected 99 people. By the end of October, it was feared that the number had grown as high as 300,000.

#biogen-inc, #boston-mass, #coronavirus-2019-ncov, #disease-rates, #drugs-pharmaceuticals, #science-journal

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How Scientists Tracked Down a Mass Killer (of Salmon)

Something was decimating the salmon that had been restored to creeks around Puget Sound.

#chemicals, #environment, #fishing-commercial, #fishing-sport, #salmon, #science-journal, #tires, #water-pollution

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The Children Never Had Covid. So Why Did They Have Coronavirus Antibodies?

A provocative study suggests that certain colds may leave antibodies against the new coronavirus, perhaps explaining why children are more protected than adults.

#antibodies, #children-and-childhood, #colds, #coronavirus-2019-ncov, #elledge-stephen-j, #immune-system, #science-journal, #tests-medical

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Scientific Journals Commit to Diversity but Lack the Data

Several prominent publishers said they did not track the race and ethnicity of the researchers contributing to their platforms.

#academic-and-scientific-journals, #american-assn-for-the-advancement-of-science, #black-people, #cell-journal, #discrimination, #elife-journal, #journal-of-the-american-medical-assn, #lancet-the-journal, #minorities, #nature-journal, #new-york-times, #pnas-journal, #public-library-of-science-plos, #race-and-ethnicity, #royal-society, #science-journal, #science-and-technology, #springer-nature, #your-feed-science

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Ancient Dog DNA Shows Early Spread Around the Globe

Research on fossil canine genomes is expanding and producing some surprises about the lives of dogs and humans in prehistoric times.

#anatolia, #dogs, #europe, #genetics-and-heredity, #paleontology, #pigs, #research, #science-journal, #wolves, #your-feed-science

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No Grumpy Old Men in the Chimp World

Older male chimps follow a pattern that researchers also see in humans, preferring to have positive relationships with a few good friends.

#age-chronological, #animal-behavior, #arizona-state-university, #dar-es-salaam-tanzania, #friendship, #goodall-jane, #harvard-university, #machanda-zarin-p, #monkeys-and-apes, #rosati-alexandra-g, #science-journal, #tufts-university, #uganda, #university-of-michigan, #your-feed-science

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What’s Special About Bat Viruses? What We Don’t Know Could Hurt Us

The immune systems of bats are weird, but we don’t know how weird, how they got that way or enough about other animals.

#bats, #coronavirus-2019-ncov, #genetic-engineering, #national-science-foundation, #research, #science-journal, #viruses, #your-feed-animals, #your-feed-science

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Huge Study of Coronavirus Cases in India Offers Some Surprises to Scientists

The rate of death went down in patients over 65. Researchers also found that children of all ages became infected and spread the virus to others.

#andhra-pradesh-india, #contact-tracing-public-health, #coronavirus-2019-ncov, #deaths-fatalities, #disease-rates, #india, #lewnard-joseph, #research, #science-journal, #tamil-nadu-india, #third-world-and-developing-countries, #university-of-california-berkeley, #your-feed-science

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The Coronavirus Mostly Spares Younger Children. Teens Aren’t So Lucky.

Younger children are about half as likely as older teenagers and adults to become infected, new studies suggest.

#centers-for-disease-control-and-prevention, #children-and-childhood, #colleges-and-universities, #coronavirus-2019-ncov, #coronavirus-reopenings, #disease-rates, #education-k-12, #jama-pediatrics-journal, #research, #science-journal, #shutdowns-institutional, #tests-medical, #united-states, #your-feed-science

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When the Otters Vanished, Everything Else Started to Crumble

Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters.

#alaska, #aleutian-islands, #algae, #carbon-dioxide, #fish-and-other-marine-life, #global-warming, #greenhouse-gas-emissions, #otters-animals, #reefs, #research, #science-journal, #sea-urchins, #seaweed, #your-feed-animals, #your-feed-science

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Scientists Uncover Biological Signatures of the Worst Covid-19 Cases

Studies of patients with severe cases of Covid-19 show the immune system lacks its usual coordinated response.

#coronavirus-2019-ncov, #dexamethasone-drug, #immune-system, #microbiology, #nature-medicine-journal, #research, #science-journal, #viruses, #your-feed-health, #your-feed-science

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The Male Anglerfish’s Evolutionary Solution to Female Rejection

Commingling tissues and blood would normally prompt a massive immune response. These deep sea lovers found a workaround.

#biology-and-biochemistry, #evolution-biology, #fish-and-other-marine-life, #genetics-and-heredity, #immune-system, #reproduction-biological, #research, #science-journal, #your-feed-animals, #your-feed-science

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With Covid-19, a Seismic Quiet Like No Other

Coronavirus shutdowns led to “the longest and most coherent global seismic noise reduction in recorded history,” scientists report.

#barbados, #central-park-manhattan-ny, #coronavirus-2019-ncov, #earthquakes, #geology, #noise, #research, #science-journal, #your-feed-science

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Viking Age Smallpox Complicates Story of Viral Evolution

An extinct version of the smallpox virus dating to 1,400 years ago prompts speculation about viruses becoming more lethal over time.

#cambridge-university, #coronavirus-2019-ncov, #dna-deoxyribonucleic-acid, #evolution-biology, #genetics-and-heredity, #immune-system, #science-journal, #smallpox, #viruses, #your-feed-science

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How Exercise May Bolster the Brain

Exercise prompts the liver to pump out a little-known protein that appears to rejuvenates the brain, a new study found.

#animal-cognition, #animals, #brain, #elderly, #exercise, #mice, #rodents, #science-journal

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This Ancient Sea Creature Builds Its Body With a Whisper, Not a Scream

Unlike vertebrate embryo cells, which signal to each other over long distances, sea squirt embryo cells talk only to those they’re closest to.

#animals, #biology-and-biochemistry, #fish-and-other-marine-life, #reproduction-biological, #research, #science-journal, #sea-squirts

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Regeneron Scientists Raced To Find Antibodies To Fight Covid-19. Then The Coronavirus Found Them.

This spring, researchers at Regeneron’s Westchester headquarters found themselves in one of the country’s first coronavirus hot spots.

#antibodies, #clinical-trials, #coronavirus-2019-ncov, #drugs-pharmaceuticals, #factories-and-manufacturing, #giordano-stephanie, #regeneron-pharmaceuticals-inc, #research, #science-journal

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A Worm’s Hidden Map for Growing New Eyes

When a planarian loses its eyes, cellular guides connect new ones to its brain so it can see again.

#brain, #eyes-and-eyesight, #nerves-and-nervous-system, #research, #science-journal, #worms, #your-feed-science

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Decades-Old Soviet Studies Hint at Coronavirus Strategy

A married pair of virologists in Moscow tested a vaccine on their own children in the 1950s. Now, a side effect they found is sparking new hope for a defense against the coronavirus.

#coronavirus-2019-ncov, #food-and-drug-administration, #gallo-robert-c, #immune-system, #institute-of-human-virology, #moscow-russia, #poliomyelitis, #russian-academy-of-sciences, #science-journal, #vaccination-and-immunization

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Where’s Airborne Plastic? Everywhere, Scientists Find.

There’s “no nook or cranny” on the planet where it doesn’t end up, the lead researcher on a new study said.

#air-pollution, #environment, #plastics, #research, #science-journal, #wilderness-areas

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Prototype Vaccines Protect Monkeys From Coronavirus

A series of animal experiments may point the way to an effective human vaccine, scientists said.

#antibodies, #beth-israel-deaconess-medical-center, #boston-mass, #clinical-trials, #coronavirus-2019-ncov, #immune-system, #monkeys-and-apes, #national-institutes-of-health, #science-journal, #vaccination-and-immunization, #your-feed-science

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This Is the Future of the Pandemic

Covid-19 isn’t going away soon. Two recent studies mapped out the possible shapes of its trajectory.

#coronavirus-2019-ncov, #epidemics, #lipsitch-marc, #quarantines, #science-journal, #your-feed-health, #your-feed-science

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New Studies Add to Evidence that Children May Transmit the Coronavirus

Experts said the new data suggest that cases could soar in many U.S. communities if schools reopen soon.

#children-and-childhood, #china, #coronavirus-2019-ncov, #education-k-12, #epidemics, #germany, #research, #science-journal, #shanghai-china, #shutdowns-institutional, #united-states, #wuhan-china, #your-feed-healthcare, #your-feed-science

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The Sun Is a Bit Boring, Which May Make It Special

The sun seems a little less active than hundreds of similar stars in our galaxy, which could play a role in why life exists in our solar system.

#earth, #krivova-natalie, #radiation, #reinhold-timo, #research, #science-journal, #solar-system, #space-and-astronomy, #stars-and-galaxies, #sun

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Are Face Masks the New Condoms?

If people with no symptoms are spreading the coronavirus, as some studies suggest, it may be time to give face masks the kind of advertising and promotion that support condoms as lifesavers.

#condoms, #coronavirus-2019-ncov, #masks, #nature-medicine-journal, #oconnor-david-h-1976, #research, #rockx-barry, #science-journal, #your-feed-healthcare

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