What is life? The power seems obvious until you try to seriously answer it. Zimmer journeys through experiments that have attempted to recreate life; shows how coronaviruses have altered the course of history; and even tries his own had at evolving life in a test tube... with unnerving results.

Introduction: The borderland -- The quickening. The way the spirit comes to the bones ; Death is resisted -- The hallmarks. Dinner ; Decisive matter ; Preserving constant the conditions of life ; Copy/Paste ; Darwin's lung -- A series of dark questions. This astonishing multiplication ; Irritations ; The sect ; This mud was actually alive ; A play of water ; Scripts -- Return to the borderland. Half life ; Data needed for a blueprint ; No obvious bushes ; Four blue droplets.