Stunt artists who claim they're behind the alien monoliths sell new ones for $45,000

First, there were aliens. Then, there were angry Utahns. Now, there is...a group of artists who specialize in larger-than-life stunts.

A community of artists known as The Most Famous Artist has posted photos and clues on its website and social media channels that seem to take credit for the triple-sided metal monoliths that...