Popular Mechanics for Kids - Slither & Slime and Other Yucky

Slither & Slime investigates the question all kids want to know, and makes it look like a grand adventure: Where does a toilet flush go exactly? Junior hosts Jay and Elisha conspire to find out, with the aid of New York City sewer personnel, by dropping green dye and a ping-pong ball down an ordinary toilet and watching these items progress through sewage and processing systems that ultimately release cleansed (if undrinkable) water back into natural destinations. But Slither & Slime is also about what else is below our feet: a glimpse at the giant water tunnel under construction 66 stories beneath New York (due for operation in 2025), the look of subway maintenance late at night, and how tunnel-boring machines ("moles") dug their way under the English Channel to create the British-French "Chunnel." Spectacular footage and wry humor make this a great way to see below the surface of things. --Tom Keogh