You know it’s hot when summer camps have to cancel bonfires and doctors warn that playgrounds could be dangerous. Last week, when a heat dome was descending on New York City, I grew a bit concerned myself. My children’s outdoor day camp promised to “pivot to ‘water games’,” as the email put it, and said that there would be fans and misters. “Of course,” the camp added, “if you feel the heat for the rest of this week will not set your camper up for success, feel free to keep them at home.” And w