In general, renewable carbon free energy sources are the only practical options, and have even proven economically beneficial in many places. There is a cascad

In general, renewable carbon free energy sources are the only practical options, and have even proven economically beneficial in many places. There is a cascade failure point that likely will arrive in a few decades based on our current trajectory. Geoengineering, planting trees, and or carbon credit systems does nearly nothing about long-term carbon cycles driving the issue. In general, migration won't happen much as resource constraints can't relocate nor feed 12 Billion people. Maybe something like "The Silo" fiction will become popular, or Elon and his 1600 passenger (based on current designs) company will make it off planet. lol =3