23,000 Year Old Footprints Found In US: New Chapter In Human History

Ancient footprints have been found in the United States dating back 23,000 years, implying that people inhabited North America much before the end of the last Ice Age, as per a study published in the journal Science on September 23. The footprints were discovered in silt on the shores of a long-dried-up lake, now part of the New Mexico desert. Reportedly, the sediments were marked and solidified into hard rock.