Daily Mail: Australians face a dire water shortage because of excessive extraction from an underground lake the size of Libya, scientists warned today. Falling pressure in the Great Artesian Basin — which lies 1.2 miles below ground — means less water is being forced to the surface through sources and bore holes. If this process continues the ancient supply will be unreachable, except through costly pumping. The basin, which covers a fifth of Australia, holds 65 million gigalitres …