Ruddiman studies ancient humans
By Cameron Feller and Prateek Vasireddy | September 1, 2009A study co-authored by University environmental sciences professor emeritus William Ruddiman concluded that the agricultural methods of ancient human populations may have had an effect on global climate change. Ruddiman built his conclusion off of a hypothesis made more than five years ago, which stated that humans started having a measurable effect on carbon dioxide values as populations started practicing agriculture about 7,000 years ago.
