News tagged with carbon dioxide

Four million years at Africa's salad bar

As grasses grew more common in Africa, most major mammal groups tried grazing on them at times during the past 4 million years, but some of the animals went extinct or switched back to browsing on trees and shrubs, according ...

dateAug 03, 2015 in Ecology
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Drought's lasting impact on forests

In the virtual worlds of climate modeling, forests and other vegetation are assumed to bounce back quickly from extreme drought. But that assumption is far off the mark, according to a new study of drought impacts at forest ...

dateJul 30, 2015 in Environment
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