The Problem
We all know that there are more than 7billion people living on Earth right now, and Earth is getting quite full. I mean by 2050, we should be seeing some changes in our Earth's atmosphere. This is why we should move/deivide ourselves into multiple planets. NASA and SpaceX are on this already but can they carry the weight alone? Mars is a huge planet (maybe not as huge as Earth) but it's equally big. Exploration and fixing of this planet could take quite a while.