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Modern advances like autos and power plants have mostly been to blame for causing climate change. But a University of Virginia professor claims our ancestors had a hand in warming the planet. Host Steve Curwood talks with William Ruddiman, who says that human activity 8,000 years ago may have put off an Ice Age.
Modern advances like autos and power plants have mostly been to blame for causing climate change. But a University of Virginia professor claims our ancestors had a hand in warming the planet. Host Steve Curwood talks with William Ruddiman, who says that human activity 8,000 years ago may have put off an Ice Age.