New evidence recovered from the site of the World Trade Center's Twin Towers in New York City reveals answers to the greatest mysteries of these modern marvels. Using cutting-edge science and technology, experts investigate the science behind why they collapsed.

New discoveries on Santorini, a strange island in the Mediterranean, might offer new clues in the hunt for Atlantis. Using cutting-edge archaeological methods, experts discuss the Minoan eruption as the apocalyptic event that destroyed this long-lost civilization.