Discovery of fossilized footprints reveals the moment two ancient human species crossed paths

Two species of ancient human relatives crossed paths 1.5 million years ago. Fossilized footprints in Kenya captured the moment, according to a new study.

​ Two species of ancient human relatives crossed paths 1.5 million years ago. Fossilized footprints in Kenya captured the moment, according to a new study. Read More Breaking News, Latest News and Videos | CNN