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Mark Ruffalo is an Oscar-nominated actor and an advocate of addressing climate change and renewable energy. In March 2011, Mark co-founded Water Defense to raise awareness about energy extraction impact on water and public health. A regular contributor to the Guardian and Huffington Post, Mark is a recent recipient of the Global Green Millennium Award for Environmental Leadership, the Meera Gandhi Giving Back Foundation Award, and Riverkeeper's Big Fish Award. He was named one of Time Magazine's "People Who Mattered" in 2012.