By: Erin Ruberry
Tonight's episode of The Unexplained Files explores sightings both recent and historic to uncover the truth about the spine-chilling snowman.
Recent scientific analyses of hair purportedly belonging to both Bigfoot and the Yeti revealed that hair attributed to Bigfoot actually came from bears, wolves and humans -- but "hairs linked to the Yeti were determined to belong to a mysterious bear species that may not yet be known to science."
Could this unknown bear be the basis for the Yeti legend?
In 2013, a British geneticist linked hair samples from the Yeti to "a breed of Arctic bear that lived tens of thousands of years ago."
"Everyone in the Himalayas has no doubt that [Yetis] exist," Oxford University's Bryan Sykes told NBC News.
Is this video of a Yeti sighting real or an elaborate hoax?
Watch The Unexplained Files: The Yeti tonight at 10/9c on Science Channel.