Australia is the world’s driest continent [apart from Antarctica]. Climate change is expected to make its droughts even more frequent. The country is still paying for years of overexploitation of its biggest river system, the Murray-Darling basin. The federal government in Canberra is spending A$3.2 billion ($2.2 billion) buying up and cancelling farmers’ water entitlements in a bid to reduce salinity and repair other environmental damage stretching back a century,’ (The Economist, 13 Feb 2016).