The grossest thing you touch every day, according to science

It’s probably not something you want to think about, but what do you think is the dirtiest thing you touch every day? If you commute via subway, you might suspect a stairwell handle or train pole as the most likely culprit. If you go from your house to your car to an office, maybe it’s the elevator button or the key fob you have to dig out of your bag. All very good guesses–you might even be tempted to pull out your phone and look up the correct answer. And there we have it. “It might