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Science and Tech The Science Of Spit Evolutionary geneticists and biologists have tracked a ghost species while studying human saliva and its evolution. Prev Next By: Megan Smith Posted ShareCopy linkFacebookNextdoorXThreadsRedditLinkedInEmailWhatsAppMessengerPrint Add Scripps News as a Google Preferred Source Related StoryScientists Say Antarctic Animals May Not Be Safe From Human Pathogens Most Recent Catch Me Up: A Texas flip headlines a huge night for Democratic election gains Jon Leiberman Connecticut Sen. Chris Murphy is discharged from hospital after a stroke AP via Scripps News Group As Mississippi vote count drags on, voters say they were made inactive in error Lori Jane Gliha Science and Tech Interactive: Bets are right there on your phone and America is paying the price Reddit will soon require users to log in to access its content Scripps News Group Anthropic is reportedly rapidly accelerating AI development amid slowdown calls AP via Scripps News Group Watch Scripps News on your favorite app or smart TV. About Scripps News Download the Scripps News app