| When Willis Carrier demonstrated air conditioning in his igloo-shaped booth at the New York World’s Fair in 1939, the concept had been around since at least the ancient Romans, who helped cool the homes of the wealthy by circulating water through the walls. But it was the Syracuse, NY-based Carrier who made the cooling technology available “for the millions, not just for millionaires” after advances in the 1920s rendered air conditioners practical and affordable for residences. Today, Carrier’s invention is in 82 percent of all U.S. homes, giving millions of us icy-cold comfort. |