The son of a man who found a message in a bottle 60 years ago is now searching for the author's relatives.
Scientists have determined what made the notorious Roman cave so deadly to those who ventured inside.
Someone has been hanging underpants out across a village square in France and nobody seems to know why.
A man who went missing in New York was later found 3,000 miles away and nobody knows how he got there.
A new expedition is set to investigate an unexplored ecosystem hidden beneath a huge Antarctic iceberg.
A miniature UFO that allegedly crashed in Yorkshire in 1957 has been rediscovered inside a museum archive.
A code used by a Spanish king to communicate with his top military commander has finally been deciphered.
A major new movie based on the enigmatic mansion has seen interest in the house soar in recent weeks.
A forensic linguist has conducted a new analysis of two letters allegedly written by the killer himself.
Scientists at the University of Alberta have applied artificial intelligence to the long-running mystery.
The mystery of what happened to the three men who escaped Alcatraz in 1962 may have finally been solved.
Scientists have finally solved the mystery of the relationship between two 4,000-year-old mummies.
500 years ago, a deadly epidemic known as 'cocoliztli' killed nearly 80 per cent of the Aztec population.
Scientists suspect that the unexplained bursts could be coming from a very strong magnetic environment.
Code-named Zuma, the secretive satellite was launched in to orbit aboard a Falcon 9 rocket on Sunday night.
43 eggs found in a children's sandpit in Australia may be from one of the world's most venomous snakes.
Astronomers believe that they have finally solved the mystery of Tabby's Star's unusual dimming behavior.
The DNA of microbes found on the International Space Station has been sequenced in space for the first time.
More than 200 years after his death, the mystery of J.P. Radan Muller's final resting place endures.
Authorities in Russia have been attempting to determine what has been giving the snow its peculiar color.