The Great Blue Hole is a large submarine sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 70 km from the mainland and Belize City. The hole is circular in shape, over 300 m across and 124 m deep.
Over of the world’s ice-free land is at risk of profound ecosystem transformation by a new study reveals. “Essentially, we would be leaving the world as we know it,” says a researcher who studied the critical impacts of climate change on landscapes.