
These 23,000-year-old human footprints are the oldest in the Americas
Credit: David Bustos/White Sands National Park. “For decades, archaeologists have debated when people first arrived in the Americas,” says study coauthor Vance Holliday, a professor in the University of Arizona School of Anthropology and department of geosciences. “Few archaeologists see reliable evidence for sites older than about 16,000 years. Some
470 Views