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17 April 2014 12:48 pm ,
Vol. 344 ,
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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ScienceShot: It's Official, Men Are the Dirtier Sex
30 May 2012 5:05 pm
It's true what they say: Your keyboard is crawling with bacteria. Though if you're a woman, you may have less to worry about. In a new study, researchers took swabs of a variety of office equipment in New York, San Francisco, and Tucson. They found more than 500 types of bacteria, most of which normally live on our skin or in our nasal, oral, and intestinal cavities. Chairs and phones accumulated the most bacteria, followed by desktops, keyboards, and computer mice. In a few cases, hardy microbes commonly found in hot springs and volcanic islands also appeared in the mix, perhaps tracked into the office following a vacation to St. Lucia or Yellowstone. New York and San Francisco's bacterial diversity was virtually identical despite their nearly 4700-kilometer divide, while Tucson's microbes were more variable and tended to be heavy on desert soil bacteria in addition to the human-derived species. San Francisco offices were the least contaminated. And while the offices of men and women had the same types of species, women's offices had on average 10% to 20% fewer of them. Differences in hygiene may be to blame, the team reports online today in PLoS ONE. Men are known to wash their hands and brush their teeth less frequently than women, the researchers write, and are generally "perceived to have a more slovenly nature."
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