Hydrology:
Northern India's Groundwater Is Going, Going, Going ...
Richard A. Kerr
Satellite remote sensing of a 2000-kilometer swath running from eastern Pakistan across northern India and into Bangladesh has for the first time put a solid number on how quickly the region is depleting its groundwater: 54 cubic kilometers of groundwater are being lost per year from the world's most intensively irrigated region hosting 600 million people, according to a study in press. Another paper published this week has reached similar conclusions.