Well over 60 million people on the Lower Mekong Basin depend on the Mekong River, not least for its bounty of fish, which in Cambodia's case provides 80% of the population's annual protein intake. But this fact, and many others, seems not to be taken into account as dam building goes on in Laos and Cambodia. It is as if the countries of the Mekong are sleepwalking into a dangerously worrying future.