Revellers float Yipeng lanterns by the Ping River in Chiang Mai to mark the Loy Krathong festival in 2010. SUBIN KHUENKAEW
You can't fight tradition, it seems, even when it presents a clear public danger. Thus, airlines have cancelled 74 scheduled flights to and from Chiang Mai during the three-day Loy Krathong festival to prevent any accidents involving sky lanterns.