The challenge before many of us is to channel our fear and grief about the climate crisis into choices that safeguard the future: how we provide aid to the most vulnerable, and how we heat and cool our homes, travel, eat and, above all, vote. We commit a grave error when we indulge the fantasy of universal vulnerability — that the world is becoming generally inhospitable to human life. For while we all live on one planet, there are many worlds separating the real victims of climate change from the bystanders.