TheScienceofNarcissismDeep-SeaMiningHowAILearnsWhatNoOneTaughtItHowthebiggestanimalsevertowalkEarthgotsohugeDinosaurGiantsSEPTEMBER2023SCIENTIFICAMERICAN.COMSeptember2023,ScientificAmerican.com1September2023VOLUME329,NUMBER2PhotographbyVincentFournierONTHECOVERArgentinosaurusisthebiggestdefinitivesauropoddinosauronrecord.Itweighedanestimated75metrictons.Sauropodsattainedthelargestsizesofallterrestrialanimals,andtheyevolvedthesesupersizedproportionsagainandagainoverthecourseoftheir150-million-yearhistory.Newresearchhintsandhow—andwhy—theybecamegiants.IllustrationbyChaseStone.34PALEONTOLOGY26EvolutionoftheEarthShakersSauropoddinosaursarebyfarthebiggestcre...
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