News tagged with levels

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 ...

date22 hours ago in Ecology
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Cooking up altered states

Churning raw milk sufficiently creates butter. Squirting lemon juice coagulates it into curd. These two phenomena are not as straightforward as they sound on the molecular level.

dateJul 31, 2015 in Materials Science
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