The idea is to make Mars livable for human beings, by giving it a climate similar to Earth's (Terra's).  This should be easier to do on Mars than on Earth because no one lives there to complain; we can experiment with less concern for errors. It will take a few decades and several 10s of...

Would you like to make a contribution of historical proportions? Here's your chance. This challenge is to create technology that can literally help to reshape our world, liberate hundreds of millions of people from repression, and bring down evil regimes in the process. There are few...