ScienceDaily: Top Science News

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Amazon deforestation brings loss of microbial communities Posted: 26 Dec 2012 05:09 AM PST An international team of microbiologists has found that a troubling net loss in diversity among the microbial organisms responsible for a functioning ecosystem is accompanying deforestation in the Amazon rainforest. This is important because the combination of lost forest species and the homogenization of pasture communities together signal that this ecosystem is now a lot less capable of dealing with additional outside stress.

Fluctuating environment may have driven human evolution Posted: 26 Dec 2012 05:09 AM PST A series of rapid environmental changes in East Africa roughly 2 million years ago may be responsible for driving human evolution, according to researchers at Penn State and Rutgers University.

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