Listed here are some of the most perplexing conundrums that have baffled scientists and captured the imagination of all humanity... Click on a question to reveal the startling truth.... 1 Did the ancient Egyptians harness some unknown energy source when building the Great Pyramid ? 2 Do extra-terrestrials regularly visit Earth, and systematically abduct humans ? 3 What really happened to Princess Diana ? 4 What causes crop-circles ? 5 What is the truth behind the 'Bigfoot' sightings ? 6 ...and the Loch Ness Monster ? 7 Things that go bump in the night ? 8 Psychokinesis ? 9 Spoon-bending ? 10 Phantom hitch-hikers ? 11 Dowsing ? 12 Clairvoyance / Nostradamus ? 13 'Past-life' regression ? 14 Is there life after death ? 15 Do some pets know what their owner is thinking ? 16 Did the US Air Force use technology recovered from a crashed alien spaceship to design and build the Stealth Aircraft ? 17 Did NASA fake the Apollo moon landings ? 18 So what's the REAL mystery ?