How is it raining plastic?! (video) (IMAGE) American Chemical Society Caption Every year, more than 1,000 tons of plastic rain down onto national parks and wilderness areas in the western U.S. In this week’s episode, we talk about where that plastic comes from, and we look for it in rain that falls on Washington, D.C.: https://youtu.be/HUAaurZKi6U. Credit The American Chemical Society Usage Restrictions None. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.