> If we can make Mars habitable, we can make Earth habitable for far less cost.
I think the main thing there is that Mars is a blank slate, unclaimed and fairly uniform. We can't terraform Earth because we can't get everyone aligned with the same goals. Moving away from fossil fuels means that a lot of individuals, corporations and countries have to make investments and sacrifices, or lose their grounds for existence entirely.
I mean this was only achieved once, when banning CFCs. There's been other agreements - like let's not use cluster bombs or chemical weapons - but those have been ignored without major consequences.
I think the main thing there is that Mars is a blank slate, unclaimed and fairly uniform. We can't terraform Earth because we can't get everyone aligned with the same goals. Moving away from fossil fuels means that a lot of individuals, corporations and countries have to make investments and sacrifices, or lose their grounds for existence entirely.
I mean this was only achieved once, when banning CFCs. There's been other agreements - like let's not use cluster bombs or chemical weapons - but those have been ignored without major consequences.