While they look like they could have been made yesterday, the footprints were pressed into mud 21,000 to 23,000 years ago, according to radiocarbon dating.
While they look like they could have been made yesterday, the footprints were pressed into mud 21,000 to 23,000 years ago, according to radiocarbon dating.
New research, supported by advanced dating techniques, suggests that humans settled in the Americas around 23,000 years ago, challenging earlier beliefs of a 14,000-year timeline. When and how humans first settled in the Americas is a subject of considerable controversy. In the 20th century, arch
Thomas Stafford, an independent archaeological geologist in Albuquerque, New Mexico, who was not involved in the study, said he “was a bit skeptical before” but now is convinced.