64 years ago, a thick blanket of smog covered the city of London and killed more than 12,000 people.
Two young boys in Pakistan literally 'power down' after the sun sets and can only move during the day.
Secret tunnels have been discovered beneath the stage of William Shakespeare's Curtain Theater in London.
A diver believes that he may have discovered a missing nuclear weapon at the bottom of the Arctic Ocean.
The bones of a castaway found on a Pacific island in the 1940s could be those of the famed aviator.
A surveillance plane has been looking in to reports of a 'pinging' sound in the Fury and Hecla Strait.
Russian scientists have located a secret Nazi facility that was abandoned before the end of World War II.
Scientists have come up with a new theory that could help to explain the mystery of the Bermuda Triangle.
A strange aluminium object unearthed in Romania in 1973 is thought to date back up to 250,000 years.
An intriguing optical illusion has been caught on camera from the shores of North America's largest lake.
Mysterious individuals dressed as clowns have recently started to turn up on the streets of England.
The mysterious Victorian mansion has remained a place of intrigue since Sarah Winchester's death in 1922.
Undersea explorer Barry Clifford believes that he has located a huge, long-lost pirate treasure trove.
A painting believed to be the work of Italian painter Raphael has been found in an 18th-century home.
Cryptographers have been attempting to decipher the text's mysterious symbols and diagrams for decades.
The author of 'It' and many other popular novels maintains that creepy clowns will always be terrifying.
The mystery of a missing British explorer ship which disappeared in the Arctic in 1845 has been solved.
Environmental officials have been left perplexed after dozens of grackles appeared to fall ill en masse.
These mysterious circular, grass-ringed patches are still leaving scientists scratching their heads.
Authorities have called for an investigation after the Daldykan river turned a peculiar shade of red.