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evildork t1_ith5nvt wrote on October 23, 2022 at 4:51 PM

Reply to comment by Extremely-Bad-Idea in Signatures of alien technology could be how humanity first finds extraterrestrial life by WallStreetDoesntBet

One possible technosignature that we could detect is high levels of CFCs in the atmosphere of an exoplanet. They're industrially useful chemicals with no known natural means of production.