Over more than 30 years of studying climate change, reading hundreds of reports, studies, white papers, commentaries, and news stories on the topic, during which time I’ve written hundreds of thousands of words on the issue, I have come to a few firm conclusions: Climate change is happening—slowly, modestly, but happening; humans may be contributing to it, though whether they are the dominant or even a primary cause is an open question; and there is no evidence so far that climate change is producing dangerous results.

In addition, there is no reason for believing—outside of flawed computer model projections and mantra-like repeated claims from those who in some form or fashion profit from stoking climate fear, in terms of money, resources, power, or all of them combined—that climate change or the human greenhouse gas emissions (and associated fossil fuel use) that are supposedly causing it, pose an existential threat to humankind or the environment.

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