No tires de la cadena!: Secretos cientificos sobre la caca y el pis

Throughout history, the products of our bladders and bowels have helped us to build houses, wash and dye clothes, fertilize crops, treat illnesses, solve crimes, control pollution, and create fuel, energy, and explosives. These pages show you how while telling some fascinating stories at the same time. Illustrated with brilliantly fun artwork and endearing characters, this book entertains with wizards using "magical urine," soldiers fighting with exploding piles of dung, pee-wielding beauty therapists, and much more.