6,906 results
6,906 results for: Bears
- Anthropology
Reservoirs of Evolution: Rainy periods linked to human origins in Africa
Three phases of heavy rainfall in eastern Africa between 2.7 million and 900,000 years ago created deep lakes and might have played a critical role in the evolution of human ancestors.
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Bitty Beasts of Burden: Algae can carry cargo
Scientists have devised a way to make single-cell algae bear loads over distances of several centimeters, a tactic that could prove useful in tiny machines.
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Turning Back Time: Embryonic stem cell rejuvenates skin cell
By fusing an embryonic stem cell with an adult skin cell, researchers have created cells that retain valuable embryonic characteristics but carry the adult cell's genes.
- Astronomy
Most distant galaxy discovered
Astronomers have observed a galaxy as it existed 700 million years after Big Bang.
- Animals
Myna birds don’t benefit from brainstorming
Mynas birds are actually a lot worse at problem solving when working in a group.
- Animals
Grizzly bears get stressed from salmon decline
Grizzlies in coastal British Columbia bulk up on salmon in the fall, but they experience stress when the fish are scarce.
- Health & Medicine
For babies, walking opens a whole new world
Walking and talking are linked as babies develop, anecdote and data show.
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Suppressed thoughts rebound in dreams
Thoughts that are consciously suppressed during the day often pop up in dreams, regardless of whether they involve emotionally charged desires, a new study suggests.
- Health & Medicine
Gene ups oral-cancer risk for drinkers who smoke
People who have a particular variant of a single gene are at a disproportionate risk of oral cancer if they both smoke and drink.
- Archaeology
Stone Age Combustion: Fire use proposed at ancient Israeli site
A Stone Age site in Israel contains the oldest evidence of controlled fire use in Asia or Europe, from around 750,000 years ago, a research team reports.
- Earth
Harm from Plastic Additive Challenged: Early exposure shows no ill effects
Presumed exposure shortly after birth to a chemical ingredient in plastics shows no evidence of disrupting development in people, according to a small study of teens who, as newborns, received intensive medical care involving plastic hospital equipment.
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Bubble Trouble: Mad cow proteins may hitch a ride between cells
Prions, the proteins behind mad cow disease, may travel between cells in bubbles called exosomes.
