Life thrives in the deepest, darkest recesses of Earth鈥檚 crust, and it is unlike anything seen on the surface. Discovered only in recent decades, intraterrestrials鈥攂izarre subsurface beings that can live for millions of years鈥攄emonstrate how life can exist in boiling water, pure acid, and even bleach. Please joing the Smithsonian Associates in welcoming Karen G. Lloyd, author of Intraterrestrials.