The new world on Mars

Within a few years, humans will be able to voyage to Mars. SpaceX is at the forefront of companies already building fleets of spaceships to make interplanetary travel as affordable as Old-World passage to America - to the then New World. We will settle the red planet, transforming its raw materials into resources and tackling the challenges that await us, creating a new frontier for humankind. Dr Robert Zubrin explains how populous Martian city-states will emerge, producing their own air, water, food, power and more.