LAST SUMMER was brutal, the third hottest in U. S. history. Texas saw a record-high 279 heat-related deaths, and in Western Europe, a massive heat wave caused more than 20,000 heat-related deaths. Heat kills more people in America than any other extreme weather event. Men are particularly at risk—more than two thirds of all heatstroke deaths in the U. S. are guys, partly because we’re typically larger and are affected more by heat.
The good news is that our bodies are already equipped with a sophisticated, superefficient means
