6,896 results
6,896 results for: Bears
- 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.
- Earth
New analysis rejuvenates Himalayas
The Asian mountain range that includes some of the tallest peaks in the world turns out to be about 15 million years younger than geologists previously thought.
- Health & Medicine
Study reveals male link to preeclampsia
Men who were born of mothers who had the pregnancy complication preeclampsia are roughly twice as likely to father a child through preeclamptic pregnancy than are men who were born of mothers who had a normal pregnancy.
- Earth
POPs in the butter
Governments may be able to monitor trends in the release and transport of persistent organic pollutants by sampling butter.
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Depression linked to heart deaths
In a community sample, people suffering from moderate to severe depression exhibited an elevated death rate from heart disease over a 4-year study period, even if they had no discernable heart disease to begin with.
- Anthropology
Early Brazilians Unveil African Look
Prehistoric human skulls found in Brazil share some traits with modern Africans, leading a Brazilian scientist to theorize that Africans rather than Asians first arrived in the Americas sometime before 11,000 years ago.
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Tapeworms tell tales of deeper human past
A new analysis of tapeworm history suggests that people have been wrong about where we picked up pests: It was not domestication of cattle and pigs but increased meat eating in Africa.
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Pulling antioxidants starves cancers
Realizing that many cancers depend on antioxidants for their survival, researchers have successfully designed a dietary strategy that suppresses breast cancer growth and spread, at least in animals.
