Sydney Morning Herald: THE world’s largest miner, BHP Billiton, has weighed into the climate change debate, warning that Australia should ”look beyond coal” and towards other energy sources. The chief executive of BHP, Marius Kloppers, said Australia’s economy will suffer if it does not significantly reduce its carbon emissions in anticipation of a global carbon price . ”Failure to do so will place us at a competitive disadvantage in a future where carbon is priced globally,” he said. BHP …