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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: The Color of Victory
10 December 2013 7:15 pm
If you like to bet on fights, take heed: Chameleons with the brightest markings usually win. In lab studies pitting one male veiled chameleon (Chamaeleo calyptratus, pictured) against another, researchers looked at how aggression and fighting abilities correlated with the brightness of 28 different patches on various parts of the lizards’ bodies, as well as how quickly those patches brightened or changed color. Videos showed that during the first phase of an encounter—from a distance, when males typically provide opponents with a good look at their sides—the male with the brightest stripes on its side was more likely to make the first move toward its opponent. Once foes were in close proximity and face-to-face, the male with the brightest patches on its head usually won the fight. How quickly the head patches brightened was also important, the researchers report online today in Biology Letters. The faster the flash, the more often that male bested its foe. It’s not yet clear, the researchers say, but a male’s ability to change color rapidly may be a sign of its ability to quickly ramp up adrenaline and other hormones needed to take on an opponent successfully—and that wimpier chameleons learn to recognize this.