Gary Arnold in Elkton, MD on January 29, 2021. Photography by Mengwen Cao for OneZero

Hex Factor: Inside the Group Offering $250,000 for Proof of Superpowers

To defend science, the Paranormal Challenge devises experiments to test claims of X-ray vision, telekinesis, and other paranormal abilities

WWhen Gary Arnold first heard the noise, he was alone in the library at the local college where he teaches…