You’d think the end of the world would be enough to get us scared. Humans have always been an exceedingly risk-averse species—which is how we came to survive as a species at all. If there are lions on one part of the savannah, we go to another. If crocodiles keep coming out of the river, we fish somewhere else. So when it comes to the loss of the entire planet, well, we ought to take action. And yet we don’t; we never do.
