6,896 results
6,896 results for: Bears
- Earth
Sticky Situation: Nonstick surfaces can turn toxic at high heat
Nonstick cookware can, if overheated, sicken people and kill birds, according to a new analysis of research published over the past 40 years.
- Materials Science
Caught on Tape: Gecko-inspired adhesive is superstrong
Researchers have emulated a gecko's sticking power to create a superstrong adhesive.
- Anthropology
African Legacy: Fossils plug gap in human origins
Scientists who discovered three partial Homo sapiens skulls in Ethiopia that date to nearly 160,000 years ago say that the finds document humanity's evolution in Africa, independently of European Neandertals.
- Health & Medicine
Cancer vaccine gets first test in patients
The first clinical test of a cancer vaccine that targets a protein called carcinoembryonic antigen shows promise.
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Down the Tubes: Amino acid proves key to plant reproduction
An amino acid that human brain cells communicate with also has a role in plant sex.
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Beyond Clots: Platelets in blood may guide immune response
Platelets, best known for their ability to create blood clots in wounds, may also have a role in the immune system.
- Materials Science
Miniature Motor: Nanotubes central to new rotating device
Researchers have used miniature, nested cylinders, called multiwalled carbon nanotubes, to make a motor only 300 nanometers long.
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The Naked Truth? Lice hint at a recent origin of clothing
A study of genetic differences among human lice hints at the origin of clothing.
- Paleontology
Oh, what a sticky web they wove
A look inside a piece of 130-million-year-old amber has revealed a thin filament of spider silk with sticky droplets that look just like those produced by modern spiders.
- Earth
Nonstick but not nontoxic
A proliferating pollutant shed by nonstick products and surfactants caused neonatal deaths and developmental impairments in tests with rodents.
- Astronomy
Black Hole Life Preserver: Don’t get sucked in without one
By temporarily counteracting a black hole's tremendous tidal forces, a proposed black hole life preserver would slightly lengthen the life and shorten the agony of anyone exploring one of these gravitational beasts.
- Tech
Dream Machines from Beans: Legume proteins provide motion
Plant proteins swell and shrink in response to calcium, sparking new ideas for micromachines.
