Terraforming: Can We Turn Mars Into Earth 2.0?

Are there ways to terraform Mars -- that is, make it habitable for humans? Some scientists think so. They have big plans, but they also face some big obstacles. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: Or help support us by subscribing to our page on Subbable: ---------- Looking for SciShow elsewhere