Could We Turn Mars Into Another Earth?

Mars… the red planet sitting out there in our solar system 54.6 million kilometers from the Earth at its closest point to the sun. We have a probe inching along slowly on its surface taking samples, photos, and sending us back information about the planet. The new plan suddenly to send humans to Mars. But is it really possible to transform the red planet into a habitable place for humans and what would it take? We’ll take a look at what the possibilities are and some of the biggest challenges we face.