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53:55 On today's show, we hear about a new report that calls on policymakers to do more for families with children who continue to struggle during the COVID-19 pandemic. Plus, we find out how supply chains are dealing with the added stress of holiday shipping on top of the influx of online orders during the health crisis. And, we take a trip down moulins on Greenland's Ice Sheet with a University of Arkansas geologist.
9:51 University of Arkansas Geologist Matt Covington joined a team of explorers who, over a two-year span, descended hundreds of feet into several ice shafts, called moulins, on Greenland’s Ice Sheet. The scientists were able to map and measure how accelerating rates of summer melt water are carving massive ice drains into the sheet, possibly impacting its stablity. Greenland Ice Sheet expedition principle investigator and videographer, Jason Gulley, a University of Florida geologist, generously provided audio and photographs for this report. Tags:
Anywhere else on the planet. that heat melting glaciers, sea ice and greenland's ice sheet, which lost 12.5 billion tons of ice in a single day.sidn't expect to happen for at least another 50 years. >> the extent of ice melt here in greenland will actually help determine just how high sea levels will rise. all this ice that's fallen off, it's been since we've gotten here. we've been hearing it and seeing it falling off. and it's going into the ocean. what happens? >> we are on the first step of a domino effect. >> because what happens in the arctic doesn't stay in the arctic. >> we've only had...
The world as we know it, and we're running out of time to stop it. nbc's al roker traveled the world to see the impact of these changes up close. >> reporter: when you're talking temperature, 2019 was one for the record books. this was the hottest july ever for the planet. five countries have all time national heat records. across the globe, the hottest june, july, and september. and the second hottest august, october, and november in recorded history. i traveled to south eastern greenland where the arctic is warming twice as fast as anywhere else on the planet. that heat melt glaciers, sea ic...
Greenland where the arctic is warming twice as fast as anywhere else on the planet. that heat melting glaciers, sea ice and greenland's ice sheet, which lost 12.5 billion tons of ice in a single day. something scientists didn't expect to happen for at least another 50 years. the extent of ice melt here in greenland will actually help determine just how high sea levels will rise. all this ice that's fallen off has been since we've gotten here. we've been hearing it and seeing it falling off and it's going into the ocean. what happens? >> we are on the first step of a domino effect. >> because w...