6,859 results
6,859 results for: Bears
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Animal Origins: Genome reveals early complexity
Analysis of DNA from a choanoflagellate, the closest known living nonanimal relative of animals, allows scientists to infer the genetic starter kit possessed by the first animal.
- Astronomy
In the Beginning: More early clues for life at home, out there
Astronomers move closer to understanding how life arose on Earth and how it could arise elsewhere.
- Ecosystems
On Whales’ Appetites: What a Waste
An advocacy group and renowned scientist floundered in an attempt to compel opinion shapers with the science showing that industrial fleets, not whales, pose a serious threat to fish stocks.
- Math
A building of bubbles
Math Trek: The National Aquatics Center in Beijing, newly built for the Olympics, is a glowing cube of bubbles. The mathematics behind it are built around Lord Kelvin's tetrakaidecahedra and the physics of foam.
- Humans
From the September 4, 1937, issue
Growling grizzlies star at Yellowstone, radioactive dating puts Earth's age at less than 3 billion years, and a suggestion that overanxious parents can turn their children into stutterers.
- Health & Medicine
Getting the Red Out: Drug improves kids’ psoriasis symptoms
The rheumatoid arthritis drug etanercept clears up psoriasis in children and may become the first systemic medication for the ailment in youngsters.
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- Humans
From the January 8, 1938, issue
Social scientist named AAAS president, rarest of the rare found high in the air, and an unusual joint for a skull.
- Climate
Boreal forests shift north
As forests move northward and to higher elevations, they alter ecosystems and threaten to further heat the Arctic's already warming climate.
- Health & Medicine
Perchlorate: A Saga Continues
Perchlorate is not yet a household word in many parts of the country. But it may becomes one if Sen. Barbara Boxer has her way. Perchlorate – an ingredient in solid rocket fuel, fireworks, flares and explosives – taints drinking-water supplies around the nation, not to mention plenty of foods. In animal tests, the pollutant […]
- Earth
Hibernation concentrates chemicals
Some pollutants accumulate in grizzlies during the bears' hibernation.
- Humans
From the March 5, 1938, issue
Shoes that give silent testimony for safety measures, ten moons and counting for Saturn, and finding oil in impossible places.
