Environment News Service: About 600 million people, or nearly 10 percent of the world’s population, live in low-lying areas at risk of flooding as sea levels rise due to climate change, according to research presented today at the International Scientific Congress on Climate Change in Copenhagen. Even in the lower ranges of current predictions, it looks increasingly likely that sea level rise will be at least 50 cm (19.6 inches) by 2100, scientists told the Congress, and the upper range of sea level rise could …