6,904 results
6,904 results for: Bears
- Earth
New accord targets long-lived pollutants
Negotiators drafted an agreement to ban or phase out some of the world's most persistent and toxic pollutants.
- Materials Science
A hard new material with a soft touch
Adding exotic substances called quasicrystals to polymers creates nonabrasive hard materials, which could soon serve as coatings in machine parts.
- Anthropology
Human ancestors had taste for termites
Incisions on ancient bone implements found in South Africa indicate that human ancestors gathered termites, a protein-rich food source, more than 1 million years ago.
- Plants
The bladderwort: No ruthless microbe killer
A carnivorous plant called a bladderwort may not be a fierce predator at all but a misunderstood mutualist.
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Infection divides two wasp species
Two tiny wasp species provide the best evidence yet that infection by Wolbachia bacteria can play a role in forming species.
- Health & Medicine
HIV-related viruses still cross species line
Various potentially dangerous strains of simian immunodeficiency virus exist in wild primates in Africa and are still being spread among people who hunt the animals for meat.
- Materials Science
Scientists develop self-healing composites
Researchers have developed a composite material that has the ability to repair small cracks within itself, a characteristic that could be used to extend the reliability and service life of electronic and aerospace components.
- Astronomy
Ancient Mars water: A deep source?
A new analysis of a Mars meteorite that fell to Earth suggests that much of the water believed to have once flowed on the surface of the Red Planet came from eruptions of molten rock that originated deep within the planet.
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Roach females pick losers with good scents
Male Tanzanian cockroaches lose fights if they have too much of a particular pheromone, but females find it alluring.
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Baboon rumps signal quality of motherhood
The size of the swellings on a female baboon’s rump match her physical prowess for motherhood, a rare case of reproductive-quality advertisement in females.
- Health & Medicine
Two genes tied to common birth defect
Researchers report that defects in either of two specific genes may be responsible for DiGeorge syndrome, the second most common cause of congenital heart defects in newborns.
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Repression tries for experimental comeback
A laboratory experiment finds that people have difficulty remembering words that they have intentionally tried to forget, providing support for Sigmund Freud's controversial concept of repression.
