Beating the Heat

Most folks don’t give their HVAC system a second thought—until it breaks in the middle of a scorching summer. Air conditioning didn’t simply change how it feels indoors, but it changed where we live and how certain industries exist. And behind that hum in the ceiling lies more than a century of engineering breakthroughs.

Today, the systems keeping us cool are at the forefront of engineering and environmental advancements. From history to technology, and even a bit of physics, see what you know about HVAC with this month’s Big Quiz.