slavery http://kgou.org en Germ Theory: How Disease And Climate Change Toppled The Roman Empire http://kgou.org/post/germ-theory-how-disease-and-climate-change-toppled-roman-empire <p></p><p><span style="line-height: 1.5;">University of Oklahoma historian </span><a href="http://cas.ou.edu/kyle-harper" style="line-height: 1.5;">Kyle Harper</a><span style="line-height: 1.5;"> says there have been thousands of answers to what caused the fall of the Roman Empire. </span>Overexpansion<span style="line-height: 1.5;">, economics, and the rise of Christianity are all valid explanations, but he’s exploring the role of disease and climate change.</span></p><p>“When we look back at the Roman Empire now, we can see that changes in the Romans' environment, both the climate, but also the kind of species that live in and around humans, especially pathogens, play an enormous role in the collapse,” Harper says.</p><p> Fri, 25 Oct 2013 17:18:00 +0000 Brian Hardzinski & Suzette Grillot & Matt Addison 15915 at http://kgou.org Germ Theory: How Disease And Climate Change Toppled The Roman Empire