Bloomberg: Fossilized coral reefs formed the last time the Earth was warmer than today show sea levels could rise rapidly by the end of the century if global warming triggers a collapse of ice sheets in Greenland and Antarctica. A “catastrophic” rise in the ocean of 13 feet to 19.6 feet is possible, said Paul Blanchon, a scientist at the National University of Marine Sciences in Cancun, Mexico, whose team studied the fossilized reefs. The death and re-emergence on higher elevation of reefs …