HOW POO CAN SAVE THE WORLD

We all drop anchor. But instead of flushing it out of sight and out of mind, you should be proud of your brown masterpiece because it has the power to create a bright new future. Discover how people have used dung all through history, what happens to poo after you've flushed it away, and how it contributes to global warming. Explore how we can use poo to power our cars, homes and even rockets, and how scientists are using other ingenious sources of renewable energy.