A mask is seen on a statue of Juddha Shumsher Jang Bahadur Rana who was prime minister during the Rana dynasty, on a polluted day in Newroad, Kathmandu, Nepal, March 19, 2017. Due to more air pollution in Kathmandu, youth groups protest symbolically by keeping mask in the statue. (Xinhua/Pratap Thapa)
