The United Nations announces partnership with the Smurfs to help promote the 17 Sustainable Development Goals for the 2017 International Day of Happiness.
In honor of the holiday, Pharrell releases the 24-hour music video for his song "Happy."
The first International Day of Happiness was celebrated, launched by Ndaba Mandela and Chelsea Clinton at the TedXTeen conference in New York City.
Conceptualized by United Nations special advisor Jayme Illien, the holiday is established at the first ever UN conference on Happiness.
