Lesley Stahl reports on the depletion of crucial groundwater across the globe -- with a focus on California -- and the NASA satellite technology that is revealing the situation's seriousness.
Lesley Stahl reports on the depletion of crucial groundwater across the globe -- with a focus on California -- and the NASA satellite technology that is revealing the situation's seriousness. Watch Stahl's report on Sunday, May 31 at 7 p.m. ET/PT.
