Let me tell you about why I woke up crying today. It has to do with just how close we are to full-blown climate disaster. I was thinking about children who are already experiencing the horrible consequences of global warming, and I was thinking about particular children I love and what’s in store for them. Most of all, I was thinking about the unthinkable: that we are on the verge of ensuring that most, if not all, life on Earth will be snuffed out.