What are the plastics pervading our environment made of? How do they affect us? How do they change, degrading into microscoping, then nanoscopic waste? How do they end up in the soil, in rivers and oceans, in our own bodies? Can we ever surmount this submersion in plastic? Forty researchers from the Sorbonne University, France's National Museum of Natural History, diplomats, and elected officials provide clear, simple, and informative responses to these questions.