Why do we still use pennies in our currency? They’re more trouble than they’re worth (literally). If you earn $10 per hour, a penny is worth 3.6 seconds of your time. So if you take more than 3.6 seconds to spot a penny on the ground and pick it up, you actually lost money.
But here’s one reason to keep pennies around: there are a lot of fun facts about them. Did you know that if you take 16 pennies and stack them, they equal one inch? And if you take those same 16 pennies and lay them side by side, they equal one foot. Fascinating, right? Visit this site and you’ll learn more than you ever wanted to know about pennies — from one single penny to one quintillion pennies.