Newsweek: Almost a century ago, Russian botanist N.I. Vavilov was traveling the world in search of new species when he identified why equatorial rain forests are so critical to the Earths future: Theyre the source-pool for 90 percent of the planets biodiversity. Rain forests have been the focus of global conservation efforts ever since. Today, as climate negotiators convene for the United Nations Climate Summit 2014 in Lima, Perua country that is dead-center in that genetically rich belt of land around...