Expecting more heat-related deaths and health problems as global warming increases, California public health officials Wednesday announced a new plan to track heat-related fatalities and hospital visits over the next five years. The $4.5 million study, funded by the U.S. Centers for Disease Control and Prevention, also will project how increased temperatures from global warming are expected to boosts deaths and illnesses in decades ahead, including asthma emergencies, heat stroke and heart attacks. It is believed to be the first major statewide study in the nation examining the link between global warming and emergency room visits. The research will be...