Excessive Heat and Human Health: Defining the Problem and Implementing Solutions Speaker: Larry Kalkstein, President, Applied Climatologists, Inc. Heat is the most dangerous weather extreme in terms of human health, killing more people than hurricanes, tornadoes, and lightning combined. Public and stakeholder awareness about the negative health impact of heat is increasing but is still low compared to other weather extremes. This presentation will discuss the health effects of heat in southern Wisconsin as compared to other places around the world, and will suggest ways to lessen the danger through more sophisticated warning systems, the ranking of heat events, and the implementation of measures that should be instituted by regions whenever an excessive heat warning is called.