Michio Kaku, a popular author and professor of Theoretical Physics at the City College of New York, appeared Tuesday on Fox News to explain some theories about how crop circles are created.

He said one way to make crop circles was to simply use a wooden board and some rope.

“Now with GPS, lasers and microwave ovens, you can create intricate patterns as detailed as any you see in science fiction movies,” Kaku explained.

Watch video, via MoxNews.com, below: