Scientists say Climate Change, Dams Threaten Mekong Livelihoods

Scientists meeting in the Thai capital have warned extreme weather caused by climate change will reduce fish stocks and major crops in the Mekong River Basin if countries in Southeast Asia fail to adapt. However, they also warn dam building, much of it for hydropower, is the largest single threat to fisheries that sustain millions of people. VOA's Daniel Schearf reports from Bangkok.