6,901 results
6,901 results for: Bears
- Earth
On Thinning Ice
Although some of Earth's glaciers seem to be holding their own in the face of global warming, most of them are on the decline, many of them significantly.
- Anthropology
Erectus Ahoy
A researcher who explores the nautical abilities of Stone Age people by building rafts and having crews row them across stretches of ocean contends that language and other cognitive advances emerged 900,000 years ago with Homo erectus, not considerably later among modern humans, as is usually assumed.
- Planetary Science
Martian Invasion
If all goes according to plan, three spacecraft—one in December, two in January—will land on the Red Planet, looking for evidence that liquid water once flowed on its surface.
- Earth
Attack of the Rock-Eating Microbes!
Geologists who examine mineral transformations increasingly see bacteria at work, leading the scientists to conclude that if microbes aren't driving the underlying chemical reactions, at least they're taking advantage of the energy that's released.
- Health & Medicine
Testing Times
Relying in part on a new rapid HIV test, health officials are working to identify and treat more HIV infections earlier in the course of the disease.
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Tiny Bubbles
Microscopic vesicles shed by cells may help the AIDS virus, benefit cancer cells, and drive the immune response.
- Plants
Warm-Blooded Plants?
Research heats up on why some flowers have the chemistry to keep themselves warm.
- Humans
Undignified Science
Research advances in 2003 heralded a string of unexpected scientific indignities that will occur in the future, at least in the fevered imagination of one writer.
- Humans
Undignified Science
Research advances in 2003 heralded a string of unexpected scientific indignities that will occur in the future, at least in the fevered imagination of one writer.
- Paleontology
L.A.’s Oldest Tourist Trap
Modern excavations at the La Brea tar pits are revealing a wealth of information about local food chains during recent ice ages, as well as details about what happened to trapped animals in their final hours.
- Health & Medicine
Telltale Charts
Overturning a basic tenet of conventional wisdom in cardiology, new research suggests that more than half the people who develop heart disease first show one of the warning signs of smoking, having diabetes, or having high blood pressure or cholesterol.
- Tech
Body Builders
By growing stem cells on three- dimensional polymer scaffolds, tissue engineers hope to mimic natural tissue development and ultimately produce replacement body parts.
