6,868 results
6,868 results for: Bears
- Health & Medicine
Mummies reveal heart disease plagued ancient Egyptians
CT scans of preserved individuals show hardening of arteries similar to that seen in people today.
- Earth
Small earthquakes may not predict larger ones
Quakes far from tectonic plate boundaries may simply be aftershocks of ancient temblors.
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Birth of the beat
Music’s roots may lie in melodic exchanges between mothers and babies.
- Space
Chemical fingerprint found for planet hunting
The amount of lithium in the atmosphere of sunlike stars is a powerful indicator of whether such stars have planets, a new study reveals.
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Fat chance
Scientists are working out ways to rev up the body’s gut-busting machinery.
- Chemistry
The skinny on indoor ozone
Indoor concentrations of ozone tend to be far lower than those outside, largely because much gets destroyed as molecules of the respiratory irritant collide with surfaces and undergo transformative chemical reactions. New research identifies a hitherto ignored surface that apparently plays a major role in quashing indoor ozone: It’s human skin. And while removing ozone from indoor air should be good, what takes its place may not be, data indicate.
- Climate
Polar Bear Fallout
Why fights are likely to break out in the next few months to years between industry, environmental advocates, and the feds as regulations are developed, and litigated, over how to conserve declining numbers of polar bears.
- Humans
Bear deadline
Court calls for the already overdue decision on listing polar bears as a threatened species.
- Humans
Newborn babies may cry in their mother tongues
Days after birth, French and German infants wail to the melodic structure of their languages.
- Paleontology
Small ancestor of giant sauropods unearthed
Fossils suggest that the bipedal dinosaur occasionally walked on all fours and could open its mouth wide to gather foliage.
- Agriculture
Frogs: Clues to how weed killer may feminize males
Atrazine, a widely used agricultural herbicide, not only can alter hormone levels in the developing frogs, but also perturb their physical development — and lead to an excess number of females, researchers report. Their new findings may help explain observations reported by a number of other research groups that at least in frogs, fairly low concentrations of atrazine can induce a feminization — or demasculinization.
- Earth
Frogs: Weed killer creates real Mr. Moms
Several months back, a Berkeley undergraduate began witnessing distinctly odd behavior in frogs she was caring for in the lab. At about 18-months old, some frisky guys began regularly mounting tank mates, as if to copulate. Except that their chosen partner was invariably male. He had to be. Because genetically, every animal in the tank was male.
