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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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ScienceShot: Why Wallabies Don't Pass Methane Gas
30 June 2011 2:00 pm
When cows digest food, they produce methane, a potent greenhouse gas, but when kangaroos chow down, their digestive tract is relatively methane-free. The difference comes down to one group of bacteria, new research suggests. Scientists studying wallabies, a smaller relative of kangaroos, isolated gut bacteria that they have now classified as Wallaby Group 1 (WG-1). When the researchers grew the bacteria in a nutrient broth, they found that the microbes produce a compound called succinate instead of methane as an end product of digestion. As succinate is not a greenhouse gas, the scientists hope that further studies on the WG-1 bacteria will help researchers find a way to modify livestock to produce less gas—methane gas, that is.
See more ScienceShots.