What's the sense in living if I'm not going to go to another planet?

I think if you want to make Earth similar to Mars all you have to do is remove the magnetosphere. It wouldn’t take long (geologically) for solar winds to rip away the atmosphere and radiation to sterilize the surface. Perhaps a necessary first step to colonization is a foolproof synthetic magnetosphere. How else do you shield an entire planet/moon?

If I recall, the biggest failure of biosphere2 was, with all that money, planning, and brain power they forgot to factor in the oxygen the bacteria in the soil would use and factor in the formation of calcium carbonate on the exposed concrete and had to (secretly) add pure oxygen to the system at least once.

Also contributing to the failure, Steve Bannon was put in charge (despite major objections by the team) and immediately the project fell apart among allegations of abuse and safety concerns he admitted in court… “ He also testified that when the woman submitted a five-page complaint outlining safety problems at the site, he promised to shove the complaint "down her throat".”…the crew sued over this and won $600000 in compensation!