6,859 results
6,859 results for: Bears
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Cooperative strangers turn a mutual profit
In social exchanges, monkeys and people often appear to act according to the principle that "one good turn deserves another."
- 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.
- Health & Medicine
Fused cells hold promise of cancer vaccines
A vaccine composed of tumor cells fused to immune cells has helped several people survive advanced kidney cancer.
- Health & Medicine
Federal Government Launches Organic Standards
Though for decades some foods have carried the label “organic,” consumers never could be sure exactly what the term meant. Action by the Department of Agriculture last week should clarify things. USDA USDA On Oct. 21, USDA implemented regulations governing the production and labeling of organic foods. Until now, bodies from state governments to trade […]
- Chemistry
Hydrogen: The Next Generation
Researchers are looking for more sustainable ways to generate hydrogen, which burns cleanly but is typically made from fossil fuel.
- Health & Medicine
Kill or Be Killed: Tumor protein offs patrolling immune cells
Many human cancers may evade surveillance by exploiting a protein normally found on certain immune cells.
- Animals
Hyena androgens exact high cost
Blocking androgens for spotted hyenas before they're born shows that the exposure of a female fetus to male hormones normally takes a heavy physical toll when females bear their own pups.
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- Astronomy
Balloon Sounds Out the Early Universe
A balloon-borne experiment circling Antarctica has measured the curvature of the universe and revealed that it's perfectly flat.
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From the December 5, 1931, issue
PROTECTION EXTENDED NEARLY EXTINCT TEDDY BEARS Koalas, known colloquially in Australia as native bears, real, live teddy bears in soft, plushlike fur, have lately become the objects of special solicitude, both official and private, in the far island-continent that is their home. For several generations nobody paid any more attention to them than Americans pay […]
- Materials Science
Materials with Memory
Metal alloys and polymers that can remember a preprogrammed shape may literally reshape technologies ranging from warfare to medicine and car repair.
- Tech
The Little Engines That Couldn’t
Tired of grinding their gears, micromachine researchers turn to surface science.
