6,888 results
6,888 results for: Bears
- Archaeology
Engraved pigments point to ancient symbolic tradition
Analyses of patterns incised on pieces of ancient pigment indicate that people in southern Africa passed along symbolic practices from 100,000 to 75,000 years ago, scientists say.
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Humans wonder, anybody home?
Brain structure and circuitry offer clues to consciousness in nonmammals.
- Health & Medicine
Postmenopausal hormones up cancer risk
Danish researchers weigh in fairly conclusively on the risk of one especially deadly cancer.
- Earth
Protected whales found in Japan’s supermarkets
Toothless Asian whales find themselves being protected by fairly toothless regulations.
- Plants
Oops, missed that tree
Until now, an acacia common in its African homeland had no scientific name
- Chemistry
How RNA got started
Scientists identify chemical reactions that could be responsible for the origin of life.
- Humans
Stone Age tools go south
Diamond-mining pits have yielded stone artifacts old enough to suggest that hand axe production started 1.6 million years ago in southern Africa, not just in eastern Africa.
- Chemistry
ENV Tidbits: Corals, nano concerns, and more
News nuggets on climate-imperiled corals, nanotech worries, and soft drinks bearing pesticides.
- Animals
Megafish Sleuth: No Steve Irwin
There's no reason a scientist can't be an action hero — even if his damsels in distress have fins.
- Earth
Monster stingrays: Field notes from a global wrangler
A megafish biologist shares what he's learning about a rare freshwater species.
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Aping the Stone Age
Chimp chasers join artifact extractors to probe the roots of stone tools.
- Ecosystems
Flowering plants welcome other life
When angiosperms diversified 100 million years ago, they opened new niches for ants, plants and frogs.
