If so, this should not preclude us from cleaning up our own planet first!

  • Yes I agree. I think it will be earth first simply due to technology. As an example, capturing carbon right out of the atmosphere is a technology we have now.

    The downside is it’s very power intensive, but it often happens in some countries that there are more power generation than needed from renewables. And if we figure out fusion power then we clean electricity for milennia.

    So cleaning up earth will have to happen within the coming 100 years. Maybe in that timeframe we will have a permanent base in mars under a dome or underground. But true terraforming of Mars is many centuries out I believe. Just my thoughts on the matter.