We live on a parched planet. Subterranean aquifers, which amount to the world’s reserve water tank, are also running dry. If this continues, the consequences could be dire. Depleted aquifers near coastlines are prone to contamination from saltwater, rendering land barren...Subterranean aquifers should be the reservoir of last resort. If we don’t protect them today, future generations will pay a steep – or even an existential – price. By Yasmin Siddiqi, Principal Water Resources Specialist at the Asian Development Bank.