Explore these 5 strange discoveries that continue to defy explanation, even for NASA.

Every year, TSA releases a roundup of the strangest items discovered during routine airport screening, and the list usually says as much about passenger behavior as it does about security technology.

Five backpacks on top of five suitcases at an airport. — Pixabay - tookapic A $35,000 Rolex, a fully assembled robot, and a suitcase packed with rat poison are just some of the unusual discoveries ...

Strangest discoveries at dealer auction with exclusive access ...