Australian Broadcasting Corporation: A leading Australian climate scientist says the greenhouse gas reduction targets proposed by the Government’s climate change adviser Professor Ross Garnaut are too weak. David Karoly is a Professor of Meteorology at Melbourne University and was a lead author on the UN’s Intergovernmental Panel on Climate Change’s fourth report. He says Professor Garnaut’s proposed emissions cuts of 10 per cent by 2020 is not enough to minimise the dangerous effects of climate change on …