Of course, he's trolling in response to similar behavior from the authors of the Lancet article. The authors propose solving a health problem with economics, g

Of course, he's trolling in response to similar behavior from the authors of the Lancet article. The authors propose solving a health problem with economics, giving climate change as a motivation. Levitt is pointing out climate change is a poor motivation for what they are trying to accomplish, and, if you follow their reasoning to its logical conclusion, it will actually encourage worse health problems.