How a Fickle Climate Made Us Human

See allHide authors and affiliations

Science  02 Aug 2013:
Vol. 341, Issue 6145, pp. 474-479
DOI: 10.1126/science.341.6145.474

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


Many researchers agree that shifts in climate and environment shaped human evolution, but there has been little direct evidence about exactly how. Now researchers are drilling cores to gather geological data in the African landscapes where human ancestors once lived. Such localized data may help test ideas such as the savanna hypothesis, which proposes that the rise of grasses accompanied the birth of hominins.