Dr. Jennifer Gardy lifts the lid on poop to discover if it’s myth or science that we’re flushing a valuable resource down the toilet. Every year, worldwide, we produce nine billion kilograms of the stuff — six metric tons each over our lifetime. From human poo to animal poo, researchers are embracing the brown stuff. They believe it’s scientific gold, and are digging into it because they’re convinced poop holds secrets that could help change our lives. But are they full of it?