6,907 results
6,907 results for: Bears
- Chemistry
How RNA got started
Scientists identify chemical reactions that could be responsible for the origin of life.
- Life
Keeping black bears wild
Wildlife managers compare ways to keep bears away from food and people.
- Earth
Oldest feathered dino shows its colors
Analysis of a fossil suggests plumage first evolved for display, not flight.
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Highlights from the meeting of the American Physical Society
A round-up of Science News' complete coverage of the American Physical Society's April meeting held February 13–16, 2010 in Washington, D.C.
- Paleontology
Ancient DNA suggests polar bears evolved recently
A study of a rare Norwegian fossil narrows down when polar bears evolved and finds they are closely related to modern-day brown bears in Alaska.
- Space
Geophysicists push age of Earth’s magnetic field back 250 million years
South African rocks suggest that the earliest stages of life on Earth were protected from harmful solar radiation.
- Chemistry
Pit vipers’ night vision explained
A new study finds the protein responsible for snakes’ sense of heat.
- Paleontology
Fossilized poop bears tooth marks
Shark-bitten fecal matter probably came from an assault on an ancient croc.
- Earth
Bacteria show new route to making oxygen
New discovery adds to the few known biological pathways for making and metabolically using the gas.
- Planetary Science
Warmth in the dark age
Lower reflectivity kept Earth from freezing under a fainter young sun.
- Anthropology
Inca cemetery holds brutal glimpses of Spanish violence
Bones from a 500-year-old cemetery have yielded the first direct evidence of Inca death at Spaniards’ hands.
- Anthropology
Partial skeletons may represent new hominid
Partial skeletons may represent a new hominid species with implications for Homo origins, one researcher claims. But many of his peers disagree.
