SIEM PANG, Cambodia — “I remember seeing a buffalo, its head tied to a floating barrel, drifting down the river,” says Pheng Sisuwath, gesturing to the Sekong River from his stilt house in Cambodia’s northeastern province of Stung Treng. That was four years ago, when one of the auxiliary dams of the Xe Pian Xe-Namnoy … Continue reading In the Mekong Basin, an ‘unnecessary’ dam poses an outsized threat