The United Nations Intergovernmental Panel on Climate Change has just released its latest report in Sweden on the outlook for global warming.
The panel says it is more certain than ever that humans are causing global warming and predicted temperatures will rise by 0.3 to 4.8 degrees this century.
It also projects sea levels will rise by between 26 and 82 centimetres.
The report also found there's been a slowdown in the rate of warming in the air temperature.
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However, one of the report's authors says this shouldn't provide any comfort to the climate change sceptics.
Professor David Karoly, from the School of Earth Sciences at the University of Melbourne, spoke with Greg Dyett.
(Click on audio tab above to hear full report).
