Under Your Feet delves beneath the Earth's surface and explores the diverse wonders hidden there. Encounter incredible creatures that could be from another planet, including the star-faced mole and worms as big as snakes, and marvel at the mind-boggling size of the humongous fungus--the biggest organism in the world. This journey into the Earth is also a trip back in time, as prehistoric fossils tell a story of creatures who lived millions of years ago. Discover all the stuff you never knew about the world under your feet, from exactly what soil is made of to the creatures who make it their home. Learn how one handful of ordinary soil contains more organisms than there are people on Earth, and carry out experiments using dirt from your back garden.