When most people think of drought, they pr...  ...g to see how they could "see" groundwater from space): The maps do not att...  ...how gravity is changing on Earth. So when groundwater supplies dwindled in the United State...  ...response, allowing GRACE to revea...

(Photo: Dick Ireland / USGS)California may be in t...  ...t it is actually quite backwards when it comes to groundwater . Despite the long and severe drought, the state i...  ...o political pressure to allow farmers to withdraw groundwater to water their crops.Felicity Barringer of The Ne...  ...te could be requ...