James Lewis writes in American Thinker: NASA's Hansen Reaches Escape Velocity

Here's an excerpt from the article:

"Prof. Hansen and his colleagues argue that rapidly melting ice caps in Antarctica and Greenland could cause oceans to swell several metres by 2100 - or maybe even as much as 25 metres, which is how much higher the oceans sat about three million years ago."
In an email to the Globe and Mail, Hansen writes
"If we follow 'business-as-usual' growth of greenhouse gas emissions... I think that we will lock in a guaranteed sea-level rise of several meters, which, frankly, means that all hell is going to break loose."For all you non-metric folks, 25 meters equals 82 feet, or about as high as an eight-story building. "Several meters" is only about 9-15 feet. That's the wall of water that is going to drown all the coastal plains of the world if Hansen's predictions come to pass.