"This funny and informative picture book tells the story of Joseph Bazalgette, a 19th century engineer who designed London's first comprehensive sewage system. In doing so, he saved thousands of lives from cholera outbreaks that regularly plagued the city. This STEM-focused story provides a window into the past and shows how one invention went on to affect generations to come--and teaches kids how they can prevent pollution in their own neighborhoods today"-- Provided by publisher