14-09-06 If Americans altered their menus to conform to federal dietary recommendations, emissions of heat-trapping greenhouse gases tied to agricultural production could increase significantly, according to a new study by University of Michigan researchers....

13-06-05 Most apes eat leaves and fruits from trees and shrubs（灌木） . New studies spearheaded by the University of Utah show that human ancestors expanded their menu 3.5 million years ago, adding tropical grasses and sedges to an ape-like diet and setting...

13-05-09 During the late Pleistocene, a remarkably diverse assemblage of large-bodied mammals inhabited the mammoth steppe, a cold and dry yet productive environment that extended from western Europe through northern Asia and across the Bering land bridge to...