DURABOOKS
DuraBooks are “green” and good for the environment. Made in such a way to be upcyclable, the synthetic “paper” can be melted down and reused in perpetuity, thus sparing trees and reducing toxins in the earth’s ecosystem. DuraBooks are also nontoxic and child safety tested.

This is what William McDonough’s book Cradle to Cradle is printed on. See this post. And do watch his TED talk.