On March 26, landmarks, businesses and households around the world will once again go dark in support of Earth Hour 2011.

The global event, organized by the World Wildlife Fund, asks households and businesses to turn off non-essential lights and other electrical appliances for one hour to raise awareness about the need to take action on climate change.

Last year, more than 126 countries participated, with an estimated 1 billion people observing the lights-out request. Iconic landmarks such as such as Big Ben, the Empire State Building, the Sydney Opera House, the Eiffel Tower, the Parthenon, the Brandenburg Gate and the Forbidden City all went dark.

(View MNN's 2010 Earth Hour slideshow of landmarks gone dark)

This year, organizers want to make the event even larger. For one Earth Hour enthusiast, that includes a certain massive social network.

Angie Bird, 26, has setup a Facebook page urging Mark Zuckerberg to shut down Facebook for one hour during the event. "Imagine you just changed your Facebook status to 'Mark Zuckerberg just saved the world, LOL!'" she says in a video posted to the site.

"They're such an important tool in the global community," she told The Record. "It's the easiest way to reach people of all different races, religions and backgrounds."

Easy as it may be to deliver that message, taking down Facebook — a company valued at more than $50 billion — would probably not sit well with investors, advertisers, and most importantly, the users.

From Farmville to status updates, people collectively spend more than 700 billion minutes per month on the site. As Jackie Cohen, editor of the blog allfacebook.com, sadly quipped, "What would I do for that hour?"

Check out Bird's video appeal to Zuckerberg below, or visit her page to lend your support. For more Earth Hour information, check out their official site here.

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Will Facebook shut down for Earth Hour?
Probably not, but one enthusiast is organizing a petition to make the social networking site consider the idea.