Video•November 9, 2010
How Do We Know: Groundwater
How Do We Know: Groundwater
Published: November 9th, 2010
NASA scientist Michael Watkins explains how satellites are used to monitor our changing global groundwater supplies.
Program Summary
Groundwater makes up about 20 percent of the world's fresh water supply. Find out how scientists are tracking the changing groundwater supplies around the world, and what it means for changes in global climate.