By Casey Chan
If you’re one of the 7 billion humans on this planet who enjoys getting pizza delivered to your door, you have a piece of plastic to thank. A piece of plastic? Yes, that circular plastic thing that goes in the middle of a pie to prevent the pizza from sticking to the top of the pizza box. It’s called a pizza saver. And it was invented 30 years ago on February 10, 1983 when Carmela Vitale got her patent issued for that piece of plastic.
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