Tony Abbott has put Australian politics on a war footing after winning leadership of the Opposition in a victory that stunned the nation.

The Maori Party's ruling council is dismissing reports that it is discussing reneging on a deal over the ETS legislation.

Weakening the incentive to reduce emissions means they will peak higher and later.

Nick Smith says he makes no apologies for using taxpayers' money to send two Iwi Leadership Group members to the upcoming climate talks in Copenhagen.

John Key warns farmers they reject a response to climate change at their peril - endangering their reputations, future incomes and the economy.