Explore the world’s new coastlines if sea level rises 216 feet.
The maps here show the world as it is now, with only one difference: All the ice on land has melted and drained into the sea, raising it 216 feet and creating new shorelines for our continents and inland seas.
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.
SOURCES: PHILIPPE HUYBRECHTS, VRIJE UNIVERSITEIT BRUSSEL; RICHARD S. WILLIAMS, JR., WOODS HOLE RESEARCH CENTER; JAMES C. ZACHOS, UNIVERSITY OF CALIFORNIA, SANTA CRUZ; USGS; NOAA, ETOPO1 BEDROCK, 1 ARC-MINUTE GLOBAL RELIEF MODEL COPYRIGHT Â© SEPTEMBER 2013 NATIONAL GEOGRAPHIC SOCIETY