Associated Press: Australia needs to reduce its greenhouse gas emissions by more than 60 percent by mid-century as part of an international effort to fight global warming, a report said Thursday. Prime Minister Kevin Rudd, who asked economist Ross Garnaut to prepare the report on the economic consequences of global warming last year before winning elections in November, has set a target of reducing Australia’s greenhouse gas emissions by 60 percent by the year 2050. But in a 63-page interim …