Great scifi, but unfortunately some people take this possibility really seriously still today. Living high tech live on earth with catastrophic climate change

Great scifi, but unfortunately some people take this possibility really seriously still today. Living high tech live on earth with catastrophic climate change +6 C would be still several times safer, cheaper and more comfortable than living on Mars. Alternatively, reversing climate change technologically on Earth would be several magnitudes cheaper, easier and faster than having Mars settlement.