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

Experts take a look at a horrible site of evil in Germany where the Nazi’s would regularly rally together.

The discovery of extraterrestrial life might face an impossible challenge, the physics of the universe itself. Using cutting-edge tech, however,