"A lot of people are focused on climate change as a defining challenge of our time. A lot of people think it is a non-problem, at least in the United States."

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And so it's no surprise that people who object to the death penalty on pure moral grounds also think it has no deterrent effect, and people who like the death penalty on grounds of retribution tend to think it has deterrent effects. They like that, and they believe that. I think with climate change we're seeing very much the same thing where those who deny climate change, they don't like that, and they don't believe it.

— Cass Sunstein