The Tonle Sap lake supplies most of Cambodia’s protein and sustains millions of livelihoods. But dams and climate change are weakening its flood pulse, and fishers who once caught 50 kilograms a day are now returning with almost nothing.

Laos has positioned itself as Southeast Asia’s leading hydropower exporter. Along its rivers, the cost has been measured in demolished temples, submerged shrines and communities still searching for stable ground.