Pharrell Williams Addresses Students at United Nations Event on International Day of Happiness

Pharrell Williams UN 2015 -- H
AP Images

"You should know that happiness is your birthright," Williams told students.

Pharrell Williams addressed local New York students at the United Nations Headquarters on Friday, the International Day of Happiness, to discuss the importance of addressing climate change.

The "Happy" singer took the stage of the General Assembly Hall and greeted teen attendees with, "I'm staring at the future right now. Hello to the future."

"Music brought me happiness. And when you find out what makes you happy — and it can be something as detailed as a long-term goal, or it can be something as simple as the way I feel when my son smiles — you should know that happiness is your birthright," said Williams. "It's a reaction to something."

“We have to move from climate change to climate action,” said Williams. “We’re in trouble, but we can change.”

In partnership with the UN Foundation, Williams launched a global online "Happy Party." The online campaign's aim is to have supporters sign the Live Earth Petition, which will urge global leaders to tackle climate change and make it a priority at the December summit. He invited fans to upload personal photos on that will be transformed into a GIF to the tune of "Happy."

Daily Mail reported that, following his address, the singer and fellow speakers and environmental advocates Philippe Cousteau and Sylvia Earle were mobbed by students for photos while "Happy" played on the speakers.