Glacial ghosts set sea-level trap for East Coast

Greenwire: The United States has a debt, etched in stone, to pay back to the sea. Across the world, the oceans are rising. Because of human-caused warming, global sea level has increased at 3 millimeters a year for the past two decades. Sucking in 90 percent of the excess heat trapped by greenhouse gases, the ocean is the world's thermometer, running hot. It's the largest sign, and impact, of climate change. But as the surge sloshed into New York Harbor last week by Superstorm Sandy made clear, sea-level......

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