When you are dying, at least in my limited experience, you start remembering everything. Images come in flashes — people and places and stray conversations — and refuse to stop. … My son knows that I am a writer and that I write about our planet. Since I've been sick, I remind him a lot, so that he will know that I was not just a sick person. … I let the memories come and go. So many of them are from my childhood that I feel as if I'm watching myself and my kids grow up at the same time. Sometimes I trick myself into thinking I'll remember this forever, I'll remember this when I'm dead. Obviously, I won't. But since I don't know what death is like and there's no one to tell me what comes after it, I'll keep pretending. I will keep trying to remember.