@jeffw to Earth, Environment, and [email protected]English • 4 months agoWhen did humans get to South America? This giant shelled mammal fossil may hold clueswww.npr.orgmessage-square0arrow-up118arrow-down11
arrow-up117arrow-down1external-linkWhen did humans get to South America? This giant shelled mammal fossil may hold clueswww.npr.org@jeffw to Earth, Environment, and [email protected]English • 4 months agomessage-square0