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6 March 2014 1:04 pm ,
Vol. 343 ,
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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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Turning a Tree Branch Into a Water Filter
27 February 2014 1:45 pm
In search of a low-cost and simple solution for filtering dirty water in developing nations, researchers have rediscovered the humble tree. A piece of freshly cut sapwood from pine trees can remove 99% of Escherichia coli bacteria in water, scientists report in PLOS ONE. Dirty water is a major cause of mortality in the developing world, and the old-school technology, which contains xylem (a porous tissue that can remove particles), could save millions of lives a year.
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