When you talk about the climate crisis, sooner or later someone is going to say that population is the issue and fret about the sheer number of humans now living on Earth. But population per se is not the problem, because the farmer in Bangladesh or the street vendor in Brazil doesn’t have nearly the impact of the venture capitalist in California or the petroleum oligarchs of Russia and the Middle East. The richest 1% of humanity is responsible for more carbon emissions than the poorest 66%. The rich are bad for the Earth, and the richer they are the...