Researchers have identified a subtle optical illusion responsible for the painting's enigmatic smile.
Two people in Poland claim to have found a long-lost train carrying a cargo of gold, gems and weapons.
The lifelike humanoid creation has been filmed being put through its paces across rough woodland terrain.
A 68-year-old man suffered a head wound that he claimed he had sustained when a UFO attacked him.
Professor Geraint Lewis believes that traveling at warp speed may actually be a viable possibility.
The pages of a special new book are capable of filtering contaminated water to make it drinkable.
A new IndieGoGo campaign hopes to raise almost $3 billion to build the fictional Lord of the Rings city.
Apollo 14 astronaut Edgar Mitchell believes that visitors from space may have prevented armageddon.
Several people have reported seeing an old World War II era bomber aircraft flying low over Derbyshire.
An English archaeologist believes that Queen Nefertiti may lie in a secret room in Tutankhamun's tomb.
Concerns have been raised over the development of new defensive and offensive space technologies.
A visitor to the ruins of a Scottish castle managed to capture the image of a mysterious figure.
A young boy in Thailand can allegedly recall specific details of his previous life as a serpent.
Footage has emerged showing a strange object flying past a large plane as it takes off from an airport.
A new image of a rocky outcrop on the surface of Mars shows what looks like a large crab-like creature.
Could our entire existence and everything we perceive of the world be inside a computer simulation ?
A legend from a small town in South Carolina has come to life this week in the form of a new video.
Authorities in Florida have been attempting to curb the recent influx of the world's largest gastropod.
Scientists have announced a breakthrough in the battle against Ebola in the form of a new vaccine.
Research involving an analysis of 337 ghost sighting cases has suggested that most ghosts are male.