Stewart Brand has been at the center of some of the most influential movements of the last century: he was a Merry Prankster organizing acid tests with Ken Kesey; his LSD trip inspired the photograph that helped catalyze the modern environmental movement; he organized the first Hackers Conference; and he created the revolutionary do-it-yourself publication The Whole EarthCatalog, which Steve Jobs famously called “Google in paperback form, 35 years before Google existed.” He has a showman’s uncanny ability to be at the center of cultural and technological shifts. Today, he is channeling his considerable energy into one of his most ambitious projects yet: a new form of wildlife conservation using biotechnology called de-extinction.