Ancient footprints discovered in White Sands, New Mexico, are challenging long-held beliefs about when humans first arrived ...

David Bustos heard about the “ghost tracks” when he first went to White Sands National Park in New Mexico to work as a wildlife scientist in 2005. When the ground was wet enough at certain times of ...

TUCSON, AZ (AZFamily) — A new study by the University of Arizona shows human life in North America may have developed much earlier than we thought. Researchers first found a set of human footprints at ...

Archaeologists say they have found the oldest known instance of fire setting, a key moment in human evolution.