Robert Frank: Today’s question was posed by my former student Karim Abdallah. “Why,” he asked, “does a light come on when you open the refrigerator but not when you open the freezer?” The cost-benefit ...

It's time to finally shed some light on why our freezers are so dark. Africa Studio/Shutterstock If you’ve ever stumbled into the kitchen during the wee hours of the night to satisfy that Ben & ...

Everyday life is full of strangeness. Why do you drive on a parkway and park on a driveway? Why does the 24-hour convenience store have a lock on the door? Why does the refrigerator have a light and ...

If you’re trying to stealthily swipe a midnight snack from the refrigerator, you’re in luck—the built-in light makes it easy to see what you’re doing. If your treat of choice is frozen, however, ...