Climate change has dominated Question Time in parliament, as both side trade blows over their greenhouse policy ahead of a crucial report coming out next week.
Ross Garnaut's long awaited paper on climate change will be released next week, and it's likely to recommend petrol be included in a carbon trading scheme.
Last year the Coalition was all for the idea but now, knowing it will send up the price of fuel, has backed right off.
There is also division on when emissions trading should be introduced, with the Government's deadline set at 2010.
Labor's Anthony Albanese says the Opposition is all over the place on the issue.
"The Shadow Minister has at least six positions. Six positions he's put forward on climate change. More positions than the Kama Sutra."
However the Rudd Government is under fire as well, refusing to spell out its own stance on whether transport emissions will be taxed.