There are many moon mysteries, from strange sightings and eerie recordings to vanishing satellites and unexplained lights on the lunar

The aurora borealis is one of Earth’s most incredible sights, and new discoveries finally explain why these mysterious lights appear

Experts and historians reveal a bygone Second World War military hospital with bizarre ties to an infamous Nazi occupant.

Experts investigate a highly-classified military cover-up with extraterrestrial objectives.

From tubas to loud speakers, see how the things we hear are built. Accordions- 00:00 – 04:58 Megaphone- 04:58 – 09:49 Banjo- 09:49

From power drills and computers to toilet paper and coffee, watch how all the different things we use at work