For many years the consensus among archaeologists was that humans began settling in North America around 13,000 years ago. This timeline was based on artifacts found that dated back between 12,700 and 13,000 years, including weapons. Now, a new discovery in Texas could throw that theory right out the door.
Researchers from Texas A&M, Baylor University, and the University of Texas have uncovered what they believe to be spear points that were used by human hunters as far back as 15,500 years ago. The discovery pre-dates the accepted timeline for the settlement of North America by a significant margin, and scientists may be forced to rethink when and where the first groups of humans pushed into what is now the United States.