Life On The Edge

Can life exist in the Antarctic ice, in the deep subsurface, in dilute sulfuric acid, in hot springs-even on Mars? What degree of high or low temperature, pressure, or salt concentration can living cells tolerate? In recent years, scientists have discovered many single-cell creatures that exist in-in fact, are perfectly adapted to-extreme environments that were considered uninhabitable just one or two decades ago. In Life on the Edge , author Michael Gross explores how microorganisms adapt to their hostile environments and how they affect our current definition of the " normal" conditions for life. He also describes the vast implications of these extremophiles and other amazing creatures-from potential breakthroughs in medicine and biotechnology to the search for life elsewhere in the universe.