SYDNEY :United Nations Secretary-General Ban Ki-moon is calling for urgent action on climate change.
Ban lashed out at climate change skeptics during a speech Thursday at the University of Sydney and said science has proven climate change is real.
Ban is visiting Australia after attending an annual forum of South Pacific island leaders in New Zealand earlier this week. He also made stops in the Solomon Islands and Kiribati, low-lying South Pacific island nations threatened by rising sea levels.
Ban has repeatedly highlighted the issue of climate change during his South Pacific tour, which comes ahead of a major climate summit in Durban, South Africa, in November.