Thursday, December 27, 2012

Human evolution driven by sudden climate change

TG Daily: Erratic changes in the East African climate around two million years ago may have been the driving force behind human evolution, say researchers at Penn State and Rutgers University. Scientists have long been aware that, around this time, the environment gradually dried out, in a process that took up to three million years. But, says the team, this wasn't a steady process: instead, the environment was highly variable. "The landscape early humans were inhabiting transitioned rapidly back and...

URL: http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNH_9Q87cidbDBtjoC9uSm0ihVNWLg&url=http://www.tgdaily.com/general-science-brief/68338-human-evolution-driven-by-sudden-climate-change
Enclosure: http://img.tgdaily.net/sites/default/files/stock/450teaser/archaeology/olduvai_gorge.jpg

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