Australian mining stocks plummet after the government passes a new 40% profit tax on the industry. International mining companies warn that many new mining projects may be canceled.
Facebook bans Australian news publishers from posting and Australian users from viewing and sharing news content in a preemptive retaliation move against the Australian Competition & Consumer Commission's (ACCC) proposed News Media Bargaining Code, which would require Facebook to pay to host Australian news content. A number of key government and charity organisations were also blocked for several hours.
The President of the United States Barack Obama arrives in Australia for a visit to commemorate the 60th anniversary of the signing of the ANZUS treaty; the United States and Australia announce an agreement to expand military cooperation between them, including the stationing of up to 2,500 U.S. Marines near Darwin.
Thousands of people gather in Canberra, Australia to protest the introduction of a carbon tax, Prime Minister Julia Gillard met the Australian Youth Climate Coalition which is pushing for a price on emissions, while climate change mitigation activists including the Australian Council of Trade Unions delivered a petition to Minister for Climate Change and Energy Efficiency Greg Combet signed by about 10,000 "working Australians" urging the government to take action.