The purple bins and the purple cups put in them were all part of a groundbreaking 3-month experiment called the Petaluma Reusable Cup Project. An investment firm called Closed Loop Partners had ...

The numbers are staggering. According to one report, the world uses 500 billion plastic cups every year. It's estimated that 50 billion paper coffee cups are thrown away in the United States alone.

They're all a part of a pilot program called the Petaluma Reusable Cup Project - a first-of-its kind-undertaking that's trying to reduce single-use plastic waste. As a part of the program ...