Radio Australia: A leading Australian economist says spending billions of dollars to build water desalination plants in a bid to drought-proof cities is a waste of money. The Australian National University’s Economics Professor Quentin Grafton says a better solution is to put up the price of water. He was speaking at an international conference held at the weekend in Canberra, to look at planning for drought in expectation of climate change. Presenter: Sarina Locke Speaker: Australian National …