An agricultural aircraft flies over Nakhonsawan province, in a bid to seed clouds, north of Bangkok, Thailand July 9, 2015. Thailand is suffering its worst drought in more than a decade. In an effort to maintain water levels in the dams that supply water for agriculture in the provinces as well as taps in the capital Bangkok, the government has asked farmers to refrain from planting rice since last October. REUTERS/Chaiwat Subprasom