Australian Greens Leader Senator Christine Milne said she was alarmed by reports that the Climate Change Authority will only recommend reducing emissions by 15 per cent by 2020.
"This does not reflect the urgency of the climate science and nor is it fair in the global sense," Senator Milne said.
"In 2007, the Intergovernmental Panel on Climate Change said that rich nations should reduce emissions by 25-40 per cent by 2020. This should have been the Authority's starting point not 15 per cent.
"With the science getting worse and time running out we need to go harder.