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Earth Hour - Strength in numbers

It's hailed as a call for action, a vote for change. By switching off the lights for an hour every year, millions around the world hope for a brighter future. They urge people, businesses and governments to cut down on energy wastage and save the Earth from fatally consuming all that it has - the trees, the coal, the oil and the water. But Earth Hour can be more than just a symbolic gesture. Every light that is switched off creates a ripple, and more people means more impact. Take a look at the strength in numbers.

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