The push to explore Mars with humans is a go. Nasa plans on inhabiting the red-planet by 2020, as preparations are in the works for space-flight. Colonization of another world has never been done before, so many precautions have to be considered before the mission can be finalized. One thing is certain, the Martian atmosphere is very hostile, so the right gear and vehicles would have to be tailored-made. The shuttles long journey across the solar-system is another factor, for the craft would have to be stable. No word on the crew yet, however astronauts are in training for the mission.