The rise of anti-scientific thinking and conspiracy is a concerning trend.
The contestants would try to reach the end of the world, as they understand it.
Why have some conspiracy theories been pushed back into the public? Because when you try to force them out of the mainstream, they'll find a wider audience on the fringes.
Is the world actually flat? Let's ask someone who has some actual perspective on the subject... from space.
SpaceX made history Tuesday after successfully launching its Falcon Heavy rocket into space, but not all are convinced any of that actually happened.
The Flat Earth theory has gained a surprising amount of traction in recent years, thanks largely to YouTube. What exactly do Flat Earthers believe?