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    Bill Nye: Climate change deniers 'are aging out'

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Bill Nye: Climate change deniers 'are aging out'

The sooner we all start working together to combat climate change the better, science educator Bill Nye tells Christiane Amanpour.

Bill Nye: Climate change deniers 'are aging out'

The sooner we all start working together to combat climate change the better, science educator Bill Nye tells Christiane Amanpour.