'Paul Revere Of Ecology' Sounded Alarms On Pollution

Oct 2, 2012
Originally published on October 2, 2012 6:14 pm

Scientist Barry Commoner, a pioneer in environmental activism, died Sunday. Melissa Block speaks with Michael Egan, environmental historian at McMaster University in Hamilton, Ontario, and author of the book, Barry Commoner and the Science of Survival: The Remaking of American Environmentalism.