Tooth analysis rules out Japan as Native American homeland; medieval knowledge of North America in Italy; Azorean lake sediments indicate early human settlement; 6-million-year-old hominin footprints in Crete

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Analysis of teeth shows early Native Americans did not come from Japan

Medieval document suggests Italians heard about America 150 years before Columbus

Lake sediments challenge history of human habitation in the Azores 

Earliest hominin footprints from Crete now dated to 6 million years ago