Science changes, and it's odd to me that scientists say, 'Never be skeptical,' because it was in the mid-'70s when they were saying we're sunk because we're going to have global climate cooling.

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“Science changes, and it's odd to me that scientists say, 'Never be skeptical,' because it was in the mid-'70s when they were saying we're sunk because we're going to have global climate cooling.”