Earth nearly lost all its oxygen 2.3 billion years ago By Stephanie Pappas The permanent oxygenation of Earth's atmosphere took twice as long as previously believed and finally finished up to 100 million years later than expected.
Masquerading, deadly snake discovered and named after shape-shifting Chinese goddess By Harry Baker Scientists in China have discovered a new species of deadly snake and have named it after a shape-shifting snake goddess from Chinese mythology.
Cells age prematurely in those with depression, study suggests By Yasemin Saplakoglu People with major depression had accelerated cellular aging by an average of two years compared to healthy controls.
'Ghost forests' are invading the North Carolina coast By Brandon Specktor Thousands of acres of greenery in North Carolina were converted to 'ghost forests' in the last three decades, and the trend is expected to continue with climate change.
Rare autoimmune disorder caused a woman's nose to collapse By Nicoletta Lanese The bridge of the woman's nose collapsed and a hole formed in her septum.
A tiny, wobbling muon just shook particle physics to its core By Ben Turner But this may not be the end of the story.
AstraZeneca COVID-19 vaccine causes very rare blood clots, EU regulator says By Nicoletta Lanese Other COVID-19 vaccines have not been linked to such clotting disorders.
Medieval gold coin hoards and skull ring discovered in Wales By Laura Geggel Metal detectorists have uncovered a handful of medieval and post-medieval treasures in Wales.
Mars Helicopter Ingenuity snaps 1st color photo on Red Planet By Mike Wall The 4-lb. (1.8 kilograms) chopper captured its first color photograph on Saturday (April 3), shortly after being lowered to the Martian dirt by the Perseverance rover.
SpaceX identifies cause of Starship SN11 prototype's crash By Mike Wall The stainless-steel SN11 didn't stick its landing last week because of a plumbing problem, according to SpaceX founder and CEO Elon Musk.
HIV vaccine stimulates 'rare immune cells' in early human trials By Stephanie Pappas A new vaccine approach to HIV that stimulates a set of rare immune cells showed 97% success at targeting those cells in its first tests in humans.
These viruses are the most likely to trigger the next pandemic, according to scientists By Rachael Rettner The tool essentially creates a "watch list" of newly discovered animal viruses that pose the greatest threat to human health.
Arctic walrus that drifted to Ireland is now hitching rides on passing ships By Ben Turner Wally has been stirring up mischief by lounging on lifeboat slipways and capsizing passing dinghies, but conservation groups have warned tourists not to get too close.
Glitzy parade of 22 mummified pharaohs fills Cairo streets By Nicoletta Lanese The 22 mummies included 18 kings and four queens.
What's up with this weird green rock on Mars? Perseverance rover is trying to find out. By Elizabeth Howell Perseverance's laser hasn't yet penetrated the mystery of a strange Martian rock near the rover's new digs.
'Chaos of clicks and sounds from below' as 70 orcas kill blue whale By Laura Geggel A whale tour Down Under witnessed as many as 70 orcas hunt and kill a blue whale.
Hungry baby sea stars eat each other in unexpected case of underwater cannibalism By Yasemin Saplakoglu Baby sea stars may look innocent and adorable, but they're teensy little cannibals and eat their own siblings for their own survival.
Researchers can now collect and sequence DNA from the air By Ashley P. Taylor For the first time, researchers have collected animal DNA from mere air samples.
Florida officials race to drain huge wastewater reservoir before potential collapse By Nicoletta Lanese To avoid a collapse, regulators are dumping the reservoir water into Tampa Bay.
Mysterious X-rays are flaring out of Uranus By Brandon Specktor Astronomers detected X-rays flaring out of Uranus for the first time. It could be a case of solar scattering, or some as-yet unknown process.
