Nuclear subs could provide the same level of protection as Moon or Mars colonies for most of the catastrophes where life on Earth survives—for the fraction of cost, starting from 1 mln usd, compared with trillions for Mars colony.
Was talking to these folks back before the Seasteading site and community was taken private. He has some solid ideas, but everyone likes floating cities, even with their weaknesses.
I uploaded new presentation based on our article (with Brian Green) in Futures about global risk survival using already existing nuclear-powered submarines. They are robust military grade survivors and could be converted into refuges with low costs. https://www.slideshare.net/avturchin/nuclear-submarines-as-global-risk-shelters
Nuclear subs could provide the same level of protection as Moon or Mars colonies for most of the catastrophes where life on Earth survives—for the fraction of cost, starting from 1 mln usd, compared with trillions for Mars colony.
Was talking to these folks back before the Seasteading site and community was taken private. He has some solid ideas, but everyone likes floating cities, even with their weaknesses.
http://concretesubmarine.activeboard.com/f544145/concrete-submarine-project/
http://imulead.com/tolimared/concretesubmarine/anuncios/af/
Thanks, interesting!