Have you ever wondered why some plastic bags are stronger than others? Why bags from clothing stores at the mall tend to be strong and thick, whereas those from your local grocery store are flimsy and ...

It was 2005 in Chico, Calif., and Andy Keller was unemployed. One idle day found him clearing his yard of debris and heading to the local landfill to dispose of it. He was dismayed by what he saw.

Ten years after California approved a plastic bag ban that’s been blamed for making its plastic bag problem worse, the state is banning single-use plastic grocery bags entirely. In 2014, California ...