Earth Hour 2007 was a Sydney event. Earth Hour 2008 was a global movement.

Created to take a stand against the greatest threat our planet has ever faced, Earth Hour uses the simple action of turning off the lights for one hour to deliver a powerful message about the need for action on global warming.

About Earth Hour

On March 31 2007, for one hour, Sydney made a powerful statement about the greatest contributor to global warming – coal-fired electricity – by turning off its lights. Over 2.2 million Sydney residents and over 2,100 businesses switched off, leading to a 10.2% energy reduction across the city. What began as one city taking a stand against global warming caught the attention of the world.

In 2008, 24 global cities participated in Earth Hour at 8pm on March 29. Earth Hour is the highlight of a major campaign to encourage businesses, communities and individuals to take the simple steps needed to cut their emissions on an ongoing basis. It is about simple changes that will collectively make a difference – from businesses turning off their lights when their offices are empty, to households turning off appliances rather than leaving them on standby.

    世界著名环保组织“世界自然保护基金”和澳大利亚最大报纸之一《悉尼先驱晨报》在2007年3月31日，联合发起一项名为“地球时间”（Earth Hour）的活动，号召澳大利亚最大城市悉尼的企业、政府部门和个人在当晚19:30-20:30停止使用电器1小时，用行动响应节约能源、减少温室气体排放和减缓全球气候变暖的号召。
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    今年的"地球活动”时间是：3月29日20:00-21:00。
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    你能做的是：
    1. 自动在活动时间停电一小时，最最最起码把不需要开着的电灯或电器关掉。
    2. 把“地球时间”告诉更多的人，如果你和你的朋友想了解更多有关地球时间的信息，请登陆http://www.earthhour.org
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    当然，在2008年3月29日晚8点后自动停电一小时只是你参加地球时间的第一步，第二步是在日后的每天自觉努力，节省一些不必要的能源消耗。