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6 March 2014 1:04 pm ,
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Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
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...
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ScienceShot: Humid Breath Fells Insects
9 August 2010 12:00 pm
Talk about bad breath. When a goat exhales on pea aphids living on alfalfa and other plants, the insects fall to the ground en masse. The aphids don't want to be lunch, but until now researchers weren't sure what caused them to drop. Perhaps it was the herbivore's shadow that scared them, or maybe the creature inadvertently shook them off. A new study, however, published in tomorrow's issue of Current Biology, finds that it's the heat and the humidity of the goat's breath that the insects are responding to. When the researchers blew carbon dioxide or other components of human and herbivore breath on the aphids, the insects stayed put. But when they blew hot, humid air on the aphids, nearly two-thirds jumped ship. The team says that a number of other insects may employ this curious method of self defense.
See more ScienceShots.