John Quincy Adams approved a real-life journey to the center of the Earth
Back in the 1800s, little was known about our planet. In the absence of scientific evidence, some people believed in some pretty kooky theories—like the idea that planet Earth is actually hollow. Our sixth president, John Quincy Adams, was on board with this one. The commander-in-chief even signed off on a proposed expedition by a fellow Hollow Earther and would-be explorer to the Earth’s ’empty’ core. But when Andrew Jackson was voted into office four years later, he put the kibosh on the journey that never was.