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Q&A Civilization self destruction prevention

In 1950 physicist Enrico Fermi wondered why we have found no alien civilizations even though there are about 10,000,000,000,000,000,000,000 stars in the observable universe. Among other things, h...

5 answers  ·  posted 9y ago by Fermi paradox‭  ·  last activity 5y ago by Fermi paradox‭

Question reality-check humans technological-development weapon-mass-destruction