AAP: Carbon pollution in Australia will rise by 20 per cent if an emissions trading scheme is not introduced, a government report says. Greenhouse gases rose by an average of 1.6 per cent annually between September 1998 and March 2009, the Department of Climate Change report, released on Sunday, said. Without an emissions trading scheme, emissions would rise by 20 per cent above 2000 levels by 2020. The Senate is almost certain to vote down the government’s plan for emissions …