Mother Nature Network

It’s no secret that the planet’s glaciers are melting. The Environmental Protection Agency reports that sea levels have risen from 6 to 8 inches in the past 100 years. Some experts estimate that sea levels will rise as much as 20 inches by the year 2100, which could wreck havoc on coastal cities.
 
NASA has been mapping deteriorating glaciers in the Antarctic through the Operation IceBridge program, called “the largest airborne campaign ever,” over the world’s polar regions.
How NASA is tracking Antarctica’s sea ice