In this episode of Stuff to Blow Your Mind, Robert chats with Michael Denis Higgins, Professor Emeritus of Earth Science at the Université du Québec à Chicoutimi and author of the new book “The Seven Wonders of the Ancient World Science, Engineering and Technology.” What was the Colossus of Rhodes, why did it impress the ancient Hellenistic world and how might we recreate it in the modern world? See omnystudio.com/listener for privacy information.