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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'Carbon sink' detected underneath world's deserts

The world's deserts may be storing some of the climate-changing carbon dioxide emitted by human activities, a new study suggests. Massive aquifers underneath deserts could hold more carbon than all the plants on land, according ...

dateJul 28, 2015 in Earth Sciences
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