When the Nazi airship Hindenburg exploded in a giant ball of fire, the world's largest aircraft in history became one of its greatest catastrophes, and now, new technology might finally reveal what caused the fatal crash and if it was an act of sabotage.

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.