For a beetle, fireflies live long and full lives—around two years—though most of it is spent underground, gloriously eating and sleeping to their hearts’ content. When we see these beacons flashing their lights, they usually have only one or two weeks left to live. Learning this as a child—I could often be found walking slowly around untrimmed lawns, stalling and not quite ready to go inside for dinner—made me melancholy, even in the face of their brilliance. I couldn’t believe something so full of light would be gone so soon.
