Shielded from the elements as we are in our climate-controlled homes, workplaces, and cars, we can find the changes unfolding in the natural world passing us by. We might have no idea that a historic drought is destroying the crops on the farms that surround our urban homes, given that the supermarkets still display miniature mountains of imported produce, with more coming in by truck all day. It takes something huge—a hurricane that passes all previous high-water marks, or a flood destroying thousands of homes—for us to notice that something is truly amiss.