Could earth-sheltered homes or underground living help us survive in higher temperatures?
https://www.reddit.com/r/collapse/comments/15a41k7/could_earthsheltered_homes_or_underground_living/Living underground after collapse.
https://www.reddit.com/r/collapse/comments/16dp8f4/living_underground_after_collapse/Prediction: Were gonna become mole people before 2040. : collapse
https://www.reddit.com/r/collapse/comments/w0dqkn/prediction_were_gonna_become_mole_people_before/