I’ve always struggled to combine the idea of personal responsibility with the overwhelming need for human society to address the threat posed by climate change. Since at least the 1970s, the massive energy corporations responsible for the vast majority of our carbon emissions have known about, and done nothing to mitigate, the harm they cause. Because they own politicians worldwide, there doesn’t appear to be any will to take government-level action. But I’m supposed to turn off a light? What possible impact could that ever have? And why is all this on my shoulders and not theirs? When I got...