No one reworks a solved puzzle, making puzzle books perhaps the most disposable of all books. However with its aqueous (water-based) coating and biodegradable soy inks printed on recycled paper, The Green Book of Word Search wraps 200 enjoyable word search puzzles in a disposable package that minimizes its effect on our environment. A puzzle can only be solved once, making puzzle books perhaps the most disposable of all books. That's why the Puzzle Society created The Green Book of Word Search. With its aqueous (water-based) coating and biodegradable soy inks printed on recycled paper, this eco-friendly book wraps challenging and enjoyable puzzles in a disposable package that minimizes its effect on our environment. The Green Book of Word Search features 200 original word search puzzles that will entertain fans of all ages. It's a smart book for smart people!