Supersized Earth

Tracing the story of how humans have transformed our world in a generation. Dallas Campbell travels the globe, visiting the world's largest and most ambitious engineering projects, exploring the power of human ingenuity and the making of the modern world. In this episode, Dallas explores how we have been redesigning the planet as we build ever more astonishing places to live.

Dallas explores how we can travel further and faster than ever before - and how our desire to shrink the world is inspiring some of the most ambitious engineering projects on the planet. He takes a treacherous walk along what will be one of the longest suspension bridges in the world and reveals how to move an object the size of Buckingham Palace half way around the globe.

We examine what it takes to keep seven billion humans alive with food, energy and water and how forty percent of the Earth's surface is now devoted to growing food. (Final)