Police are attempting to find out who built an elaborate tunnel near the venue for the Pan Am Games.
Scientists have called for an urgent investigation after the appearance of several more craters.
Scientists believe that rats may not have been responsible for the Black Death in Europe after all.
A previously unknown short story by Sir Arthur Conan Doyle has been found hidden away in a man's attic.
Concerns were raised when bright blue snow started to turn up on the streets of Chelyabinsk.
A strange saucer-shaped object has been dug up by miners during excavation work in Siberia.
Several top secret documents relating to the D-Day landings have been found hidden inside a hotel.
A peculiar downpour of milky-colored rain has been affecting parts of Washington, Oregon and Idaho.
Zoe Butler got more than she bargained for when she opened up a tin of tuna from the supermarket.
Has the famous woodchuck of 'Groundhog Day' fame ever managed to make an accurate prediction ?
The mysterious patterns were once believed to be secret codes designed to guide German bombers.
Two treasure hunters found something unexpected while hunting for gold in the lake's depths.
Having slipped in to a coma at the age of 12, Martin Pistorius didn't wake up again for over a decade.
German scientists have discovered what may be the impact site of a meteorite that struck 11 years ago.
Scientists have been attempting to determine what has been causing the spate of unexplained explosions.
Residents of the city were left puzzled and disgusted by the strange, foul-smelling vapors.
John Connors returned home to find that several large pieces of ice had crashed through his ceiling.
An underground World War II complex used to develop nuclear weapons has been unearthed in Austria.
The sprawling crop formations were accompanied by sightings of strange lights on Christmas Eve.
Amy Jones discovered a message warning her that there was something sinister behind a locked door.