A Discovery That Might Rewrite the Story of Life As We Know It

Are we on the brink of a discovery that will rewrite the story of life as we know it? "Second Genesis" follows planetary scientist Carolyn Porco as she explores the scientific quest to find life beyond Earth, and makes the case for Saturn’s moon Enceladus — with its plumes of water vapor and evidence of hydrothermal vents in a liquid ocean — as the most promising place to look.