23 March 2009
UN to Observe Earth Hour
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20 March 2009: With the goal of mobilizing support for a UN agreement to address climate change, the UN will observe Earth Hour on 28 March 2009 by turning off the lights at UN facilities worldwide.

Earth Hour, which first took place two years ago, will be observed by more than 1000 cities and close […]

UNEP to observe Earth Hour in support of action on climate change
20 March 2009: With the goal of mobilizing support for a UN agreement to address climate change, the UN will observe Earth Hour on 28 March 2009 by turning off the lights at UN facilities worldwide.

Earth Hour, which first took place two years ago, will be observed by more than 1000 cities and close to a billion people this year. [UNEP Press Release]

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