Dr. Richard and Dr. Karen Alley take vital signs of Thwaites Glacier in Antarctica to see if it is deserving of the "Doomsday Glacier" nickname. Three vital signs are examined throughout the series to access how this glacier may single handedly impact future predictions of sea level rise. In this episode, the speed of the glacier over the last 20 years is analyzed using satellite imagery. Episode Two of a three-part series. This video is part of the U.S. Ice Drilling Program's School of Ice Virtual Field Lab Series. (CC)
