Further evidence points to footprints in US National Park being the oldest sign of humans in the Americas New research has indicated fossil human footprints in New Mexico are likely the oldest direct evidence of human presence in the Americas, a finding that up-ends what many archaeologists thought they knew about civilisation in the region.

The footprints were discovered at the edge of an ancient lake bed in White Sands National Park and date back to between 21,000 and 23,000 years ago, according to research published Thursday in the journal Science ...