Recent advances in medicine and technology have expanded our understanding of aging across the animal kingdom, and our own timeless quest for the fountain of youth. Yet, despite modern humans living longer today than ever before, the public’s understanding of what is possible is limited to our species—until now. In this spunky, effervescent debut, the key to immortality is revealed to be a superpower within reach. With mind-bending stories from the natural world and our own, this book reveals lifespans we cannot imagine and physiological gifts that feel closer to magic than reality. Mixing cutting-edge research and stories from habitats all around the world, molecular biologist Nicklas Brendborg explores extended life cycles in all its varieties.