Inc DK Publishing

"Everyone has wondered exactly what happens to poop after it is flushed down the toilet. It disappears as if by magic-- but there's a lot more going on than meets the eye! This book takes young readers through each stage of the sewage system, from the Sewer Flushers who unclog sewers to keep everything moving, to how dirty water is cleaned at the treatment plant. Furthermore, learn how sludge made from our poop can be recycled in many different ways--...

This ultimate, next-generation encyclopedia, filled with gorgeous photography, showcases the world's most deadly creatures and stunning natural wonders, history's heroes and villains, and science's most incredible discoveries and inventions.