CHIANG MAI: A bright orange helicopter races over the jungle to dump water on a raging wildfire that is adding to the air pollution choking Thailand's northern tourist hub of Chiang Mai. Chutaphorn Phuangchingngam, the only female captain in Thailand's national disaster prevention team, draws on two decades of flying to steer the Russian-made chopper through the thick smoke. Forest fires are burning in several areas of northern Thailand, contributing to the annual spike in air pollution that