Australian Broadcasting Corporation: Six years ago, the UN Intergovernmental Panel on Climate Change was 90 per cent certain that human activity was the main cause of climate change. That percentage has since risen to 95, according to a new draft report leaked last week. Try as climate deniers might, they can't hide from the science forever, writes Clive Hamilton. The IPCC's Fifth Assessment Report, predictably leaked last week, will not make any significant difference to the global debate. Further confirmation of the science will...