Biologists just discovered a totally new kind of life hiding inside our mouths and guts—something that doesn’t fit any known category like bacteria or viruses. These weird RNA loops, called “obelisks,” have been there all along, but nobody noticed until now. They’re so strange, scientists can’t even agree if they’re alive! No clue yet if they’re good or bad for us, but our bodies just got a whole lot more mysterious. #Science #science #biology