Bill Nye on Trump's climate orders: 'Clean coal is a myth'
Bill Nye the Science Guy joins Lawrence O'Donnell to react to Trump's rollback of Obama climate change rules, Spicer's non-answer about whether the president still believes climate change is a hoax, and the Trump budget's proposed cuts to U.S. science agencies.
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Bill Nye on Trump's climate orders: 'Clean coal is a myth'05:00
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