PARIS - France's power company asked people to use less electricity Tuesday as some plants were forced to cut output during a Europe-wide heat wave that has fanned wildfires and killed dozens of people. One French medical expert said at least 100 Parisians have died of heat-related illnesses — a claim that if proven would quadruple the number of deaths blamed on the heat wave. With river temperatures hitting record highs, some plants that use water in production are cutting back, and six have stopped altogether. Plants are constrained by regulations limiting the amount of hot water they can discharge...