Senator WATERS (Queensland—Leader of the Australian Greens in the Senate) (14:23): The government has signalled it will take a 2050 target to the UN meeting in Glasgow but the UN's climate scientists say that catastrophic tipping points will be reached if we don't halve pollution in the next decade. Will the government's pledge for a tiny 3.9 per cent reduction over 10 years be lifted so that our national aspirations are in line with the science?