6,898 results
6,898 results for: Bears
- Anthropology
Southern Reindeer Folk
Western scientists make their first expeditions to Mongolia's Tsaatan people, herders who preserve the old ways at the southernmost rim of reindeer territory.
- Chemistry
Delivering the Goods
Experimental gene-delivery therapies generally use viruses to shuttle genetic material into cells, but some researchers are devising ways to avoid using the sometimes-risky viruses.
- Earth
Why the Mercury Falls
Certain pollutants can foster the localized fallout of mercury, a toxic heavy metal, from the atmosphere.
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How the Butterfly Gets Its Spots
The spots on a butterfly wing turn out to be unusually good model systems for a range of disciplines from genetics to behavioral ecology, offering biologists a chance to paint the really big picture of how evolution works.
- Tech
Refueling Rockets
Hybrid-rocket fuels—part solid, part liquid—have been around for a half-century, and they may just now be taking off.
- Earth
Eye of the Tiger
Recent research has upended a 130-year-old, previously unchallenged theory about how the semiprecious stone called tiger's-eye is formed.
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A Rocky Start
A new origin-of-life theory holds that life began within the confines of iron sulfide rocks surrounding hydrothermal vents at the ocean bottom.
- Earth
Oceans Aswirl
Whirls of ocean water up to hundreds of kilometers across create biological oases, transport heat from tropical climes to cooler latitudes, and affect everything from offshore oil platforms to long-distance yacht races.
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- Materials Science
Microbial Materials
Microorganisms can be coaxed into producing high-tech components and can themselves serve as valuable ingredients in new classes of materials.
- Plants
Emergency Gardening
High-tech tissue culture is helping some ultrarare plants finally have sprouts of their own.
- Health & Medicine
Blood Sugar Fix
A new class of experimental drugs that mimic the actions of the hormone glucagon-like peptide 1 shows benefits against type 2, or adult-onset, diabetes.
