Depending on whom you talk to, terraforming could take anywhere from ... The lack of gravity may cause humans on Mars to evolve differently than on Earth. Mars has one-third the gravity of Earth ...

Colonizing Mars and terraforming it to be a comfortable future home for humanity is quite the challenge. How would we go about it and how close is close enough for our purposes? How would we let life ...

Mars may be the most Earth-like of the other planets in our Solar System, but it's still an inhospitably cold desert world with a thin and unbreathable atmosphere. If humans are ever going to ...