Oldest human footprints in US found in New Mexico

This undated photo made available by the National Park Service shows fossilised human footprints at the White Sands National Park in New Mexico, the United States. Photo: NPS via AP

Fossilised footprints discovered in New Mexico indicate that early humans were walking across North America around 23,000 years ago, researchers reported recently (Sept 23).

The first footprints were found in a dry lake bed in White Sands National Park in 2009. Scientists at the US Geological Survey recently analysed seeds stuck in the footprints to determine their approximate age, ranging from around 22,800 and 21,130 years ago.