VOA – September 07, 2017 10:00 PM – Reuters

FILE – People wear protective masks during a polluted day in Shanghai, China, Jan. 19, 2016.
BANGKOK — Asia-Pacific — home to more than half the world’s population and some of its fastest-growing economies — is a key battleground in the fight against pollution, one of the biggest threats to the planet and its people, the U.N. environment chief said.