The rest is composed of saltwater or locked up in glaciers and icecaps.

FORBES: San Diego Fishing for Fresh Drinking Water in Pacific Ocean

As the ice thins, more solar radiation can enter the ocean and warm the sea water, which will cause icecaps to melt more quickly.

CNN: Nature - Satellite sees through Arctic ice for signs of climate change

The melting of the Antarctic and Greenland icecaps and the flooding of Bangladesh could not happen until the end of the next century, if at all.

ECONOMIST: If you want a cool planet, keep a cool head

Doomsters support their apocalyptic forecast with examples like Hurricane Sandy, the impending fiscal cliff, the global economic slowdown, earthquakes, tsunamis, continents breaking apart, polar icecaps melting, solar storms raging and planets colliding.

FORBES: Mayan Doomsday Forecast: Really ?!

Our scientists generally think that global warming will cause a melting of the icecaps and that will raise the water level and so on and so forth, but that might not be the worst thing that happens.

BBC: News | Back to the future | John Mohawk