A warmer world means higher seas. Global warming not only accelerates glacial melt, but also causes ocean water to expand in volume. Projections vary widely, but seas will likely rise by at least seven inches by 2100—and possibly by as much as several meters, according to NASA climate scientist James Hansen. It doesn’t take a climatologist to realize one of the immediate, pressing consequences of these figures: flooding. And since many of the world’s largest cities sit on low-lying coasts, these rising oceans could lead to many more Hurricane Katrina-level disasters.

[for complete article, follow link]