An agricultural aircraft flies over Prachuab Khirikhan in a bid to seed clouds, about 300 km (186 miles) south of Bangkok, April 4, 2007. Every day during the scorching heat of Thailand's dry season, four ageing planes take off from an airstrip southwest of Bangkok carrying cargoes of salt. The pilots seek out whatever clouds might be floating around, and then, at 6,000 feet (1,800 metres), tell their crew to start shovelling the crystalline powder out the door to seed them in the hope of provoking rain.
REUTERS/SUKREE SUKPLANG