6,907 results
6,907 results for: Bears
- Climate
How the Arctic’s poor health affects everyday life
A new NOAA report features testimony from indigenous communities in Alaska who are weathering the impacts of Arctic warming.
- Space
Realigning magnetic fields may drive the sun’s spiky plasma tendrils
Solar spicules emerge near counterpointing magnetic fields, hinting that self-adjusting magnetism creates these filaments, which may heat the corona.
- Life
Caribou migrate farther than any other known land animal
Caribou in Alaska and Canada migrate up to 1,350 kilometers round trip each year, a study reports.
- Archaeology
A toe bone hints that Neandertals used eagle talons as jewelry
An ancient eagle toe bone elevates the case for the use of symbolic bird-of-prey pendants among Neandertals, researchers say.
- Humans
Fossils suggest tree-dwelling apes walked upright long before hominids did
A partial skeleton from an 11.6-million-year-old European ape still doesn’t answer how hominids adopted a two-legged gait.
- Life
Aye-ayes just got weirder with the discovery of a tiny, sixth ‘finger’
Aye-ayes have a sixth “finger,” or pseudothumb, that may compensate for other, overspecialized fingers by helping the lemurs grip things.
- Math
How Julia Robinson helped define the limits of mathematical knowledge
Born 100 years ago, Julia Robinson played a key role in solving Hilbert’s 10th problem.
- Life
How tardigrades protect their DNA to defy death
Tardigrades encase their DNA in a cloud of protective protein to shield from damage by radiation or drying out.
- Space
How the second known interstellar visitor makes ‘Oumuamua seem even odder
With its gaseous halo and tail, the second discovered interstellar object, 2I/Borisov, looks basically like your run-of-the-mill solar system comet.
- Physics
CO2 from champagne bottles can form shock waves like those seen in rocket exhaust
Popping a bottle of bubbly releases a plume of dry ice that bears a visible type of shock wave called a Mach disk.
- Health & Medicine
For people with HIV, undetectable virus means untransmittable disease
HIV outreach and care in Washington, D.C., reveals the struggles and successes of getting drugs into the hands of those who need them.
- Climate
In a climate crisis, is geoengineering worth the risks?
Some scientists say the world needs to reconsider some human-made ideas to cool the climate as dire warnings about the looming crisis ramp up.
