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How long ago humans arrived in North America continues to be a hotly debated issue within the science community - on the extreme end, researchers estimate more than 100,000 years ago - but new University of Wyoming-led research indicates it might only have been about 13,000 years ago.University of Wyoming researchers Todd Surrovell and Sarah Allaun are the two lead authors on the study. They spoke with Wyoming Public Radio's Caitlin Tan.

University of wyomingUnited statesSarah allaunTodd surrovellNorth americaWyoming public radioNew world