I have read many books about what Earth will be like, with many variations of the theme. Did you have a particular one in mind? Does it relate to the topic of this thread. My quote from Elton John lyrics was a lead in to the difficulties of terraforming Mars as proposed by the OP, which does not seem to be a popular topic.
You are referring to Liber Deorum. Several books were being discussed so I was thinking in those terms. What will the future Earth be like? And how does that follow from putting liberals on Mars? If the answer to the second question gets too political, just answer the first question.