Ever wonder what those small numbers on the bottom of your plastic bottles and takeout containers mean? They're called Resin Identification Codes. Follow BI Video: On Twitter More from Science ...

Polystyrene (PS) is also used in toys, as well as in Styrofoam cups, takeout containers and hard packing. The code numbers on ...

When trying to evaluate a plastic food storage container for durability and safety, you should first turn the container over and check out the recycling code. Inside a triangular symbol, you’ll find a ...