What the Shuck

What is corn sweat? It seems like a question Tim Walz could answer. But he’s busy campaigning, so we’ll ask Claire Reid of the Milwaukee Journal Sentinel. “No, the over 90 million acres of corn grown in the U.S. each year doesn’t actually sweat. However, the crops’ natural evaporation processes can crank up the humidity ― especially in states like Wisconsin, Illinois, Iowa and Minnesota, which produce the highest quantities and concentrations of the nation’s corn.” What is ‘corn sweat,’ and how is it making the Midwest’s heat wave this week worse?