We Had to Live on Other Planets?

As space travel becomes more advanced, the possibility of living on other planets might become a reality. If the Earth becomes inhospitable, humans might have to use space technology to find a new home Find out what life on other planets might look like and how we can help preserve our home planet What Would Happen If...? explores some of the most important questions of modern times and the chain of events big and small changes may cause on our planet.