Tweet from kottke at March 02, 2022 at 08:36AM
Are There Lost Civilizations in Earth’s Past? “Could it be that over the last hundreds of millions of years, other civilizations existed on earth? Indigenous technological species that rose and died out?” https://t.co/BS6iITliNL
— kottke.org (@kottke)
Mar 2, 2022
from http://twitter.com/kottke