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Goulburn Valley Fresh Launch In Sydney

SYDNEY, AUSTRALIA - FEBRUARY 18: Bindi Irwin poses with a lizard during the Goulburn Valley Fresh launch at Martin Place on February 18, 2013 in Sydney, Australia. (Photo by Don Arnold/WireImage)

Earth Day: Stars and Their Environmental Causes

We're celebrating Earth Day by taking a look at stars who are taking an active role in protecting our planet with their charitable work.