What if all the ice melted? NOV 05 2013
If all the glaciers and snow and ice in the world melted, the sea level would rise 216 feet and, as this National Geographic map of the world shows, things would look a little different.
There are more than five million cubic miles of ice on Earth, and some scientists say it would take more than 5,000 years to melt it all. If we continue adding carbon to the atmosphere, we'll very likely create an ice-free planet, with an average temperature of perhaps 80 degrees Fahrenheit instead of the current 58.
See also Flood Maps.