Vast mountains that could be taller than Mt Everest are thought to exist hundreds of miles beneath the ground.
Astronomers have found what is thought to be the first confirmed moon in orbit around an extrasolar world.
A gargantuan species of ostrich-like elephant bird from Madagascar was thought to the largest that ever lived.
New research has revealed that the last tsunami to hit the UK was a lot more recent than anyone had realized.
Construction workers have unearthed what is thought to be a second Sphinx near the Valley of the Kings.
The famed aviator is thought to have sent several dozen distress calls while stranded on a remote Pacific island.
The wreck of a Russian ship thought to contain 5,500 boxes of gold bars has been found off South Korea.
Scientists have determined that there is 1,000 times more diamond beneath our feet than previously thought.
Wildlife biologist Forrest Galante is known for finding live specimens of species thought to have gone extinct.
An extrasolar world 500 light years away could be the most promising place yet to look for alien life.
New research has revealed that Antarctica is melting three times faster than previously thought.
Police are investigating a mysterious fire at what is thought to be one of Scotland's most haunted buildings.
A woman thought to be the world's oldest living human has referred to her extremely long life as a 'punishment'.
A new study has suggested that the multiverse may be a lot more hospitable to life than previously thought.
Hashtag-like etchings found on a rock in South Africa's Blombos Cave are thought to be over 100,000 years old.
A lack of phosphorus in the universe could mean that Earth-type life is a lot rarer than commonly thought.
Unknown phone-tracking or 'Stingray' devices are thought to be in operation within the D.C. area.
If you think you are having a bad day, spare a thought for this unfortunate metro commuter in Istanbul.
An old photo of what is thought to be the house's original foundation has been discovered in a local archive.
Covering 11 generations over a period of 500 years, the family tree is thought to be the largest ever created.