Direct link to ImageShareConceptually similarView AllView more with similar tones Earth Hour 2007. Before... The view of the Sydney skyline plunged into darkness during 'Earth Hour', when more than half of Sydneysiders switched off their lights for an hour to raise awareness of climate change. Organisers said as many as 2.2 million people participated, saving 24.68 tonnes of carbon dioxide -- the equivalent of taking 48,613 cars off the road for an hour, 31 March 2007.SMH Picture by ADAM HOLLINGWORTHPhotographer:ADAM HOLLINGWORTHSee all of this photographer's imagesImage ID:FXJ247643Keywords:awareness-black-carbon-Cities Towns-city-climate change-dark-environment-environmental-environmentalism-environmentalist-evening-fossil fuels-Global warming-Harbours Ports-news in review 2007-night-Places Locations-resources-Skyline-Sydney-Transport-waterAdd to cartDownload Zoom res. (TR3)DownloadRelated Collections:CityscapesSelect usageWhat type of print?