As the earth warms, glaciers and ice sheets are melting and seas are rising. Over the last century, the global average sea level rose by 17 centimeters (7 inches). This century, as waters warm and ice continues to melt, seas are projected to rise nearly 2 meters (6 feet), inundating coastal cities worldwide, such as New York, London, and Cairo. Melting sea ice, ice sheets, and mountain glaciers are a clear sign of our changing climate.
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By Lester R. Brown In late August 2005, as Hurricane Katrina approached the U.S. Gulf Coast, more than 1 million people were evacuated from New Orleans and the small towns and rural communities along the coast. Once the storm passed, it was assumed that the million or so Katrina evacuees would, as in past cases, […]