A beating heart, grown from induced pluripotent stem cells. Nobel laureate Shinya Yamanaka’s breakthrough has renewed the ancient dream of eternal youth. A new wave of tech companies wants to stop aging before it starts By Lucas Chancellor The prospect of eternal youth has long tantalized humanity, with its earliest recorded depiction dating back to 2100 B.C., in The Epic of Gilgamesh. This fixation continued, from Emperor Qin Shi Huang’s ill-fated quest for the elixir of life to the lege...