Source: China News Network
On September 23, local time, researchers reported that footprint fossils found in New Mexico, USA, showed that about 23,000 years ago, early humans had arrived in North America. In 2009, David Bustos, a resource program manager at White Sands National Park in New Mexico, reportedly first spotted these footprints on a dry lake bed inside the park. Recently, scientists at the U.S. Geological Survey analyzed the seeds left in the footprints to determine the approximate age of the footprints. Scientists believe that these footprints were produced between about 21130 and 22800 years ago.
