![Allan Gregg in Conversation (Video) show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/036/148/small/allan-gregg-in-conversation-video.jpg)
Summary: Global food shortages, waves of refugees, countries at war over dwindling resources. In a new book, Gwynne Dyer offers a terrifying vision of the not-too-distant future, all driven by the effects of global warming. Dyer is a Canadian journalist and historian. His book is called "Climate Wars". (Originally aired June 2009)