Pharrell Williams is pictured at the United Nations on the United Nations "International Day of Happiness", Friday, March 20, 2015 in New York. Williams, in a partnership with the United Nations and the United Nations Foundation, was joined by 1,700 students in the UN General Assembly Hall where they learned how to take climate action in support of efforts including the Live Earth network of events. Pharrell's efforts today included a digital activation with Google, inviting people to join a Global Happy Party for #HappyDay and #HappyPlanet. (Photo by Stuart Ramson/Invision for the United Nations Foundation/AP Images)
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