A lab to test effect of heat on humans

AT A SMALL laboratory tucked away in a gleaming basketball arena, I'm running on a treadmill under lamps designed to mimic the heat of the sun. It's almost 92 degrees. Sweat is flying off my face. I'm hooked up to machines that are tracking my internal body temperature, heartbeat and other measurements I usually don't think about.

- HIROKO TABUCHI

For the researchers, it's just another day at the heat lab at the Korey Stringer Institute, where they are working to understand the effects of a warming world on the human body. "Sweat's a good thing!" Rebecca Stearns, the institute's chief operating officer and an academic expert in heat stroke, heat-related illnesses and athletic performance, tells me.