Supporters of a controversial carbon tax gather at a rally in Sydney, Sunday, June 5, 2011. Australia's Prime Minister Julia Gillard faces her toughest political test to date as she tries to sell the ... more 
Supporters of a controversial carbon tax gather at a rally in Sydney, Sunday, June 5, 2011. Australia's Prime Minister Julia Gillard faces her toughest political test to date as she tries to sell the nation on a carbon tax that would lead to higher power prices while reducing greenhouse gas emissions. less 
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Associated Press | Photo By Rick Rycroft
Sun, Jun 5, 2011 12:07 AM EDT