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Lots of releases about Earth Hour 2009

Earth Hour - 28 March, 8:30: Or Just Change A Lightbulb

Keith Ng writes: How much can you save during Earth Hour? If you completely stop using electricity in your house, by my rough but generous estimate, you'd saved about 2,800Wh and reduce your greenhouse gas emissions by 420g. If you change a 75W incandescent lightbulb to an energy efficient equivalent, you'd save 65,700Wh per year (assuming it's on for 3 hours a day). That works out to 9,950g of greenhouse gases. That's one lightbulb. More >>

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