Fireworks explode over the Sydney Opera House and Harbour Bridge during New Year's eve celebrations January 1, 2007. The celebrations, costing around A$4 million and including 3,000 kilograms of explosives and pyrotechnics, are being called 'A Diamond Night in the Emerald City'. The new year also brings up the 75th anniversary of the Harbour Bridge, with celebrations scheduled in March. [Reuters]

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