Stories of long-lived animal species—from thousand-year-old tubeworms to 400-year-old sharks—and what they might teach us about human health and longevity. Opossums in the wild don't make it to the age of three; our pet cats can live for a decade and a half; cicadas live for seventeen years (spending most of them underground). Whales, however, can live for two centuries and tubeworms for s…