All Stories
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Aliens in Antarctica
Visitors carry unwelcome species into a once pristine environment.
- Health & Medicine
Neighborhood linked to obesity
Children living in areas that lack walking-distance parks and supermarkets are more prone to put on weight, new studies find.
- Life
Polar bears older than previously thought
New analysis reveals that the Arctic species dates back to about 600,000 years ago.
- Chemistry
Synthetic heredity molecules emulate DNA
Scientists have created six XNAs that, like the genetic building blocks they mimic, can store and pass on hereditary information.
- Health & Medicine
Attention tunes the mind’s ear
Brain activity shows how one voice pattern stands out from the crowd.
- Space
Hunt for cosmic ray source falls short
After failure to detect neutrinos from gamma-ray bursts, scientists might need to revise theories.
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- Life
Daytime anesthesia gives bees jet lag
Honeybees, as stand-ins for surgery patients, show drug’s aftereffects as biorhythms get out sync.
- Chemistry
Scientist fiddles with spider silk
Bundled and processed, the sturdy filaments yield a soft, rich sound on the violin.
- Humans
Highlights from the American Association of Physical Anthropologists annual meeting, Portland, Ore., April 11-14
Shorts on Stone Age finds in Southeast Asia, chatting among Neandertal ancestors and early cannibalism.
- Humans
Ancient walking gets weirder
Fossil footprints and bones suggest variations among human ancestors in upright gait and stance.
