Findings from a mysterious remote chain of islands off the coast of California are rattling bones in the science community as bone-pickers find traces of a “vanished world.” The Golden State’s Channel Islands, located several miles off the SoCal coast, are home to the remnants of revelational lost civilizations intriguing enough to make Indiana Jones blush. A banner finding in the area has been the 13,000-year-old remains of the “Arlington Springs Man,” the earliest dated adult found on the continent. A new documentary highlighted the extraordinary discovery, which has changed science’s thinking around where and when humans first migrated to...