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6 March 2014 1:04 pm ,
Vol. 343 ,
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: Get High, Don’t Cheat?
20 November 2013 4:45 pm
Infidelity is rife throughout the animal kingdom, but much remains unknown about why levels of such promiscuity can vary widely across and within species. Now, scientists find whether female sparrows cheat on their mates can depend on the altitude. The researchers analyzed 24 populations of 12 species of sparrows, including the white-crowned sparrow (pictured), ranging across more than 3000 meters of elevation. They discovered the higher the sparrows nest, the more faithful females can be, the researchers report in January in The American Naturalist. The investigators suggest that higher altitudes are more physically demanding, so females stay faithful to keep mates around to provide fatherly aid that can help their young survive.