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Al Jazeera English has uploaded TechKnow - Mapping Greenland's Glaciers promo An in-depth look at NASA's ...

Al Jazeera English has uploaded TechKnow - Mapping Greenland's Glaciers promo TechKnow - Mapping Greenland's Glaciers promo Al Jazeera English An in-depth look at NASA's Operation IceBridge in Greenland, which tracks rapidly melting glaciers. © 2015 YouTube, LLC 901 Cherry Ave, San Bruno, CA 94066 You were sent this email because you chose to receive updates from Al Jazeera English. If you don't want these updates anymore, you can unsubscribe here.