see also: flash forward podcast episode, could we all live underground? https://www.flashforwardpod.com/2021/05/25/could-we-all-live-underground/ https://www.f

see also: flash forward podcast episode, could we all live underground? https://www.flashforwardpod.com/2021/05/25/could-we-all-live-underground/ https://www.flashforwardpod.com/2021/05/25/could-we-all-live...