Elon Musk wants to create a colony for human survival on Mars. With his Space X, by 2024, he promises to launch a space tube carrying both building materials, humans and food to Mars to begin the human existence. This means now mankind have alternatives of depopulating Earth, and creating a cleaner world. And with Mars being made a liveable space, there's a multi-planetary existence of the human race. People can travel from Earth to go on vacation or permanent residency to Mars.
