Heat Could Shut Nuclear Plants When Needed Most. The false claims that nuclear power can address the climate crisis were dealt another blow last week as France faced the possibility of having to shut down its nuclear plants due to extreme heat. Nuclear plants cannot operate safely when their intake water is too hot -- or at all if water supplies drop too low and are not sufficiently available to cool the plant. Both of these conditions will occur with greater frequency in our rapidly warming world. In addition, water resources are becoming scarcer under the climate emergency, meaning that large thermo-electric plants, such as nuclear power plants, are devouring -- or are in competition for -- water resources needed for drinking and irrigating essential crops. As the World Resources Institute pointed out last year, "47 percent of the world's thermal power plant capacity -- mostly coal, natural gas and nuclear -- . . . are located in highly water-stressed areas." Clearly, nuclear power is a serious liability, detrimental to addressing global warming, and far from "reliable."