"<a href=""https://www.youtube.com/watch?v=50r-5ULcWgY&amp;t=53m18s"">53:18</a> This seems very logical in the future", like earth and the humans who stay will be the source planet and we fix earth so it stays green and clean and we expand in space like this guy is talking about and we will have evolved versions of humans more capable of space travel, like we talk about this stuff on science fiction movies and cartoons but in a way it logically makes sense given the correct conditions.