Tyson Slocumb, Public Citizen & Kyle Ash, Greenpeace USA. There was a huge victory for the planet yesterday as Australia passed a new carbon tax law. Australian Prime Minister Julia Gillard played a key role in ushering the law through the lower chambers of government amid fierce opposition by big polluter interests. She said her nation "made history" when the law was finally passed. Beginning next July - Australia's 500 biggest polluters will begin paying for the damage they're causing - with a tax on every ton of carbon emissions. Similar legislation was passed by Democrats in the House of Representatives back in 2009 - but died thanks to a Republican filibuster in the Senate. Former Vice President Al Gore applauded the new Australian law - writing, "This is a historic moment...With this vote, the world has turned a pivotal corner in the collective effort to solve the climate crisis...Today, we celebrate. Tomorrow, we do everything we can to ensure that this legislation is successful." So what does this mean - and what are the chances of similar carbon taxes coming to the United States?