ScienceDaily: As an extremely diverse region of rainforest and coral reefs, the tropics may have the most to lose as a result of global warming. Some disagree, arguing that tropical organisms will be favored as their ranges expand into temperate areas. Few empirical studies provide specific answers to help us choose conservation and mitigation measures. Science asked Jens Svenning, University of Aarhus, Denmark and Richard Condit of the Smithsonian’s Global Earth Observatory Network to review two …