There has been a new twist in the mystery over what happened to the head of notorious outlaw Ned Kelly.
Collections of skulls separated from their skeletons have been proving a puzzle to archaeologists.
Photographs of a mysterious carcass likened to the 'Montauk Monster' have been circulating the internet.
Nobody is able to explain the strange, bare circular patches that appear in the Nimibian grasslands.
15 cows were found dead in Texas after munching on grass that had suddenly started producing cyanide.
Scientists believe they have solved the mystery of what is powering Saturn's turbulent jet streams.
Earth was hit by a mysterious blast of cosmic radiation at some point during the 8th century AD.
A mystery predator has been blamed for the deaths of livestock near the Cambrain Mountains in Wales.
A video has appeared online showing a glowing figure with wings appearing briefly on CCTV footage.
New examination of a 425-year-old map offers a clue to an enduring mystery - the fate of Roanoke Colony.
UFO spotters have found something unusual on a picture taken by the Solar and Heliospheric Observatory.
A search is underway to find the crash site of an object that came down in the region on Friday night.
Residents have been left perplexed by a series of strange noises and rumblings in Clintonville.
The internet has been inundated recently with tales of brooms that stand upright by themselves.
Strange celestial sounds have been heard by visitors to the picturesque Yellowstone National Park.
A mysterious bottomless pit in the Pacific Northwest has been the subject of stories for decades.
The mystery surrounding a 19th century family whose inbred children had blue skin has been solved.
Dorset residents were perplexed when a torrent of blue jelly balls rained down from the heavens.
DNA tests are to be carried out in the UK to determine once and for all if big cats exist in the wild.
The long standing mystery of dying honey bee colonies may finally have a culprit: 'zombie' flies.