McDonald’s used Styrofoam for their sandwiches

McDonald’s was so popular. These days people are more concern with health awareness.

In 1990, McDonald’s phased out the foam containers and replaced them with paper packaging considered less harmful to the environment. The move was the first result of an unusual joint effort between the fast-food chain and the Environmental Defense Fund, a leading group of lawyers, scientists and economists based in Washington, D.C. (source from LA Times)