Professor Guy McPherson expains--in language non-scientists can understand--the science behind our world's runaway climate change. Discussing several recent scientific studies published in distinguished journals, McPherson argues that environmental catastrophe is now well underway, and it's probably irreversible.

He spoke in Winnipeg, Canada, on February 6, 2014. Back in May, New World Notes featured an interview with McPherson recorded after his talk. Now we broadcast the talk itself.

Recording courtesy of Michael Welch, the Global Research News Hour, and station CKUW-FM, Winnipeg.

Introduced and edited for broadcast by Kenneth Dowst