The ocean thought to lie within Saturn's largest moon may contain significant quantities of salt.
The conventional idea that yawning is a sign of tiredness or boredom is now thought to be incorrect.
Philosophers have pondered for thousands of years over the very nature of human consciousness.
A crypt dating back to the 6th century is home to what is thought to be the earliest depiction of Christ.
New archaeological evidence has suggested that Rome was founded two centuries earlier.
A dark triangular object caught on camera over Texas is thought to be a classified military plane.
Scientists have discovered a double-impact site in Sweden thought to be the result of a binary asteroid.
A new smaller breed of the world's best known dinosaur is thought to have once roamed the Arctic.
Researchers have rediscovered a species of deer thought to have disappeared over 85 years ago.
An intriguing meteorite believed to be from Mars is thought to contain signs of extraterrestrial life.
A step pyramid unearthed near Edfu is thought to predate the Great Pyramid of Giza by several decades.
New research has suggested that the iconic geological formation may be a lot younger than thought.
The remarkable gadget known as 'No More Woof' can translate a dog's thoughts in to plain English.
In some cultures, birthmarks are thought to be connected to aspects of a person's previous life.
Scientists believe that our universe is filled with far more habitable planets than previously thought.
Dubbed 'platypus-zilla', the ancient ancestor of today's platypus was thought to be over 1m in length.
New research suggests that the moon could be up to 100 million years younger than previous estimates.
Once thought to have been a vicious predator, the 7ft terror bird was actually a harmless plant-eater.
Archaeologists have uncovered a stone sarcophagus thought to contain someone 'terribly important'.
The remains of two buildings thought to be the site of King David's palace have been found in Jerusalem.