Today is World Humanitarian Day, and that means two things. First, there's a new Beyonce video -- a live performance of "I Was Here" filmed earlier this month at the U.N. General Assembly. Bey dazzles in a form-fitting white dress, singing over footage of relief efforts around the globe, but she'd rather we not focus on the moving clip.

This is a day for action, and the R&B superstar is urging fans to step away from their computers and go do some good in the world.

To that end, she's partnered with the U.N. to launch a new Thunderclap website -- one aimed at sending "the biggest social media message in history." That message, as per the official blurb: "From major international humanitarian operations to handing out food to the homeless, however big or small, let's show the world that we believe in helping others."

Beyonce and company are hoping to reach 1 billion people, and the website features an interactive map that allows visitors to "place a pin" at the scenes of their good deeds and share the details of their efforts.

Not sure how to pitch in? The site features a list of possible activities -- everything from making sandwiches for the homeless to mowing a neighbor's lawn -- so there's no excuse not to get involved. Watch the "I Was Here" video below -- then get out there and help your fellow man.

Watch Beyonce's "I Was Here" Video

See Photos of Beyonce Performing at the United Nations


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