But being green has definitely gone mainstream, and from celebs like Julia Louis-Dreyfus with her lavish, multi-million dollar solar-powered home, to Pierce Brosnan, aptly named the ‘Best Dressed Environmentalist’ by the Sustainable Style Foundation, the stereotype of the gritty, unkempt nature wanderer that once dominated the category no longer applies.

Recently, MSN posted a list of the ‘Top 14 Green Celebrities,’ which contained some long-time environmental advocates and a few surprising new additions, all echoing a commitment to championing this important cause through various initiatives like Leonardo DiCaprio’s documentary film about global warming, the 11th Hour, featuring interviews with green leaders and a companion website where everyone can sign up to take action in their local communities, and George Clooney’s Oil Change, a campaign aimed at ending America’s independence on oil.  

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The teen with the winning idea will not only win $10,000, but will win an "connection to reality" prize: an opportunity to blog on the "11th Hour Action" website, a tie-in to Leonardo DiCaprio’s climate-change film, The 11th Hour. The winner will also get to shadow one of the experts from 11th Hour Action in their work environment. The challenge officially runs from now until December 31st, and all youth under the age of 19 are eligible to participate. Teens who want to enter must do so via BKFK’s website.

"The connection-to-reality prize is especially exciting for us at BKFK, " said BKFK Founder and CEO Norman Goldstein. "As it empowers the winner to have their idea heard along with one of the most captivating movies of our time."

Idea Locker is a social networking site marketed towards teens that allows them to add friends, chat, and share ideas online. It is the brainchild of By Kids For Kids, a global marketing, branding and licensing company dedicated to make teens’ ideas a reality.