“…The U.N.’s Intergovernmental Panel on Climate Change (IPCC) already estimates that sea levels will rise between 2 and 3 feet by the end of this century. That may well be correct, Caldeira says. But he and his colleagues chose to ask the natural follow-up: What happens after this century? The short answer: The world will continue to warm, and sea level rise will begin to speed up, at least for the next 1,000 years.”