An international team of researchers has discovered a long prehistoric human trackway at White Sands National Park in New Mexico, the United States. The 12,000-year-old human footprints found at White Sands National Park in New Mexico. Image credit: Cornell University. The human tracks at White Sands National Park record more than 1.5 km (0.93 miles) of an out- and-return journey. They show the footprints of a woman or an adolescent male that are...