Preparing for the Next Big Flood

A new analysis of worldwide temperatures over the past 60 years has found more evidence that global warming is already upon us, and is responsible for extreme heat waves -- such as the ones in Russia in 2010 and in Texas and Oklahoma last year.

Naturally, this refocuses attention on the current U.S. drought. Left out of the discussion, however, is another, equally serious and already pressing consequence of human-induced climate change: sea-level rise. On all coasts, we face a huge and building threat from too much water.