Former US Vice-President Al Gore says he still has a bone to pick with John Howard, for not ratifying the Kyoto agreement.
Mr Gore, who's now a leading climate crusader, has again referred to Australia and the US as the Bonnie and Clyde of the climate crisis - just as he did on a visit here last year.
He's repeated his calls for Australia to ratify Kyoto, describing it as the world's effort to come up with rules that applied to everybody.
Mr Gore also suggests action by Australia on Kyoto could force America to follow suit.
The PM has argued that Kyoto isn't in Australia's interests even though Australia has met its emission reduction goals.