Summary: One hundred years ago, the first humans reached the South Pole of this planet. More than 40 years ago, man first walked on the moon. When will our species first set foot to explore the planet Mars? Kevin Fong seeks a likely launch date, and asks who will get us there and why we really need to explore the Red Planet. He talks to Elon Musk, founder of the rocket company SpaceX. The commercial space pioneer claims that he has worked out to take humans to Mars for $500,000 per passenger with a new kind of reusable spacecraft.
