What people say they know about climate change is a roller coaster of human ignorance—wait, everyone knows that but no one knows that? It’s striking to learn (according to Yale’s climate survey program) that 74 percent of women and 70 percent of men believe climate change will harm future generations of humans, but just 48 and 42 percent, respectively, think it’s harming them personally. It is, of course, in lots of ways.