Mercury: AUSTRALIANS can have few illusions about climate change after the release of economist Ross Garnaut’s interim report this week. His full report comes out later this year but already it is clear that sceptics, procrastinators and wishful thinkers will get no comfort from the recommendations. The independent study concludes that climate change is likely to cause far-reaching damage unless the world makes big cuts in emissions. With its fragile, arid environment, Australia …