Mark Olly, author of “Crystal Skulls & Human Heads: The Mystical History of Glass and the Extinction of the World” talks about his book with host Stan Mallow on the YouTube series, Paranormal Yakker. Mark discusses Ancient Heads, which take us back to our origin and the human diversity which was once on our planet. He also talks about Celtic Heads, Stretched Heads, and Crystal Heads. Also covered in the interview are Alien Heads. Further, Mark offers his thoughts for the future of the human race here on Earth.