United Nations Secretary-General Ban Ki-moon appoints “Red” from the “Angry Birds” movie as Honorary Ambassador for Green during the “Angry Birds for a Happy Planet” campaign, at the U.N. headquarters in New York, on Friday. The appointment of Red is part of the campaign to help the world body promote the International Day of Happiness, which is observed March 20 each year, and encourage people to take action against climate change and its impacts.Xinhua