![Earth Hour: A Lights-Out Event for Our Planet: Heffernan, Nanette, Luu, Bao: 9781580899420: Amazon.com: Books Earth Hour: A Lights-Out Event for Our Planet: Heffernan, Nanette, Luu, Bao: 9781580899420: Amazon.com: Books](https://m.media-amazon.com/images/I/51xcypizr9L._AC_SY780_.jpg)
Earth Hour: A Lights-Out Event for Our Planet: Heffernan, Nanette, Luu, Bao: 9781580899420: Amazon.com: Books
EMB Central Office - Started by WWF and partners as a symbolic lights-out event in Sydney in 2007, Earth Hour is now one of the world's largest grassroots movements for the environment.
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