LOS ANGELES California set a record for power use Friday as the state continued to bake in a heat wave that has sent temperatures soaring above 100 degrees from the north to the south and may have been responsible for as many as four deaths. The demand for electricity peaked at 4:28 p.m. when 49,036 megawatts of power was used across the state, the California Independent System Operator said. The previous record of 46,561 megawatts was set Monday. The temperature reached 120 degrees in the desert resort town of Palm Springs, shattering a 54-year-old record for the date of 117...