Senator DI NATALE (Victoria—Leader of the Australian Greens) (14:15): My question is to the Leader of the Government in the Senate representing the Prime Minister. Minister, we're back for our first question time after summer, and since we were last here we've had the hottest-ever January on record, we've seen some of the most devastating bushfires ever in Tasmania, we've seen the Darling River with a million dead fish and we've also seen those horrific torrential rains and flash flooding in Queensland. Minister, do you accept now that these are not simply natural disasters but, indeed, are the result of the breakdown of our climate system?