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5 December 2013 11:26 am ,
Vol. 342 ,
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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ScienceShot: Hairy Men Make Good Bedbug Catchers
13 December 2011 7:02 pm
When it creeps into your bed at night and crawls across your skin, the bedbug (inset) has to navigate a forest of body hair before plunging its proboscis into your flesh for a meal. One wrong step, and it could get smushed. Tickled by the question of how people detect such microscopic pests, researchers recruited 19 volunteers with various amounts of body hair and shaved one of each of their arms. They then asked the subjects to look away while they dropped bedbugs onto their arms. The volunteers hit a button as soon as they felt something crawling on them. Participants, especially men, with more hair follicles per square inch and whose body hairs were longer, tended to be several seconds quicker than less hirsute individuals to notice the bugs on their unshaven arms, the researchers report online today in Biology Letters. And everyone took a long time to notice the bedbugs on the shaved arm. That might explain why humans still have hair on their bodies, the researchers conclude, since we no longer need it for keeping warm.
See more ScienceShots.