Name: Climate In Crisis: Al Roker studies Greenland’s melting glaciers
Uploaded: Mon Sep 16 2019 11:50:43 GMT+0000 (UTC)
Duration: 3 min 59 s
Description: For an NBC News series exploring the global environment, Al Roker traveled to Greenland for an eye-opening look at its record melt and heat wave. More than 400 billion tons of water have come off the ice sheet and into the ocean, an event that scientists warn could happen again.

Sept. 16, 201903:59