Detailed text transcripts for TV channel - MSNBC - 20180421:22:45:00
The greenland ice sheet is losing nearly 300 gigatons of ice per year. and that works out to thousands of tons of ice being lost from this ice sheet per second. >> wait a minute, you just said thousands of tons of ice are lost per second. >> exactly. that works out to a new subdivision worth of homes of ice being lost every second. >> reporter: joe mcgregor is the mission's deputy project scientist. to collect this data and compare it to previous years, he and the other sciences rely on radar, lasers, and a camera that shoots thousands of photos in flight. what do we have got here? >> we have ...