OK, Forget Global Warming.

If you live in Broward County, you can quit worrying about the poles melting and raising the water levels. You're probably underwater already, according to the Sun Sentinel. And Palm Beach isn't far behind.

Half of all residential mortgage holders in Broward County owe more than their homes are worth, according to year-end data from First American CoreLogic.

Roughly 54 percent of Broward mortgage holders – 246,675 homeowners – are “underwater.” In Palm Beach County, 45.4 percent of mortgage holders – 157,544 homeowners -- have so-called negative equity.

And you were worried about Global Warming.