Island nations are on the front lines of global climate change. Heavy rainfall and rising sea levels are eroding shorelines and causing flooding. Warming and increasingly acidic oceans are damaging coral reefs that support fisheries and attract tourists. Some island communities are already moving or making plans to relocate. Fiji, a chain of 300 islands in the South Pacific, currently is chairing the meeting of the Conference of Parties of the U.N. Climate Change Convention in Bonn, Germany.