There's a Water 'Time Bomb' Lurking Beneath The Planet's Surface, Scientists Warn DAVID NIELD 23 JAN 2019 https://www.sciencealert.com/the-world-s-water-supply-is-an-environmental-timebomb-scientists-say?fbclid=IwAR3jH2EuCeG8_fWht0Z32ziPumL-Guue6WGa8_lT4HZFBgfNrdKNW87zTwE