James Gustave Speth has worn many hats throughout his environmental career. Twenty-five years ago, he advised President Jimmy Carter on how to globally deal with emerging environmental problems like climate change and deforestation. Since then, he’s founded the World Resources Institute and the Natural Resources Defense Council. He talks with host Steve Curwood about his observations over this key period in environmental progress, and about his new book, “Red Sky at Morning: America and the Crisis of the Global Environment.”