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10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
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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.