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新闻类
Lights went out at tourism landmarks and homes across the globe on Saturday for ＂Earth Hour 2009＂ , a global event designed to highlight the threat from climate change. From the Sydney Opera House and Harbour Bridge to the Eiffel Tower in Paris and London＇s Houses of Parliament. lights became less bright as part of a campaign to encourage people to cut energy use and control greenhouse gas emissions （排放） from fossil fuels
