Human Footprint Discovered in Mammoth Track Using 3D Radar

Cornell University researchers uncovered 'ghost' footprints that have been hiding since the end of the last ice age. The ground-penetrating radar is giving them insight into human and animal interaction 12,000 years ago.
Published: 10:47 AM PST November 12, 2019
Updated: 9:03 AM PST November 12, 2019