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World Wildlife FundAction Center

Golden Gate Bridge without lights John Storey / WWF-US

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Thank you for committing to turn off your lights for Earth Hour on March 28 from 8:30-9:30PM. Share your Earth Hour pledge with your followers and ask them to join you. The more people who make the commitment, the bigger the impact we'll have!

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Earth Hour 2015 is on its way to becoming the largest display for climate change action ever. With your help, we can get everyone to join us. Tell us what you are doing for Earth Hour on TakePart.com or simply post on Facebook, Twitter and Instagram using #EarthHour and @world_wildlife.