0
The US military's secretive space plane is due to launch on May 16th with a cargo full of experiments.
7
A unique form of singing that produces two tones simultaneously has remained an enigma for many years.
3
Access to the wreck of the world-famous vessel, which sank in 1912, has long remained a point of contention.
10
Footage of the unusual cephalopod was captured in the Pacific depths by the Exploration Vessel Nautilus team.
2
A student in Glasgow has deciphered a shorthand code that has remained an enigma for generations.
12
A mysterious room in Darwin's former Reserve Bank building has remained firmly locked for decades.
5
The enormous circle of ice formed in freezing weather in the Presumpscot River on Tuesday afternoon.
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Conservationists have uncovered stone carvings dating back 600 years on the tomb of a medieval bishop.
9
Hunter and fisherman Greg Strand captured footage of the colorless animal in the woods earlier this month.
5
Authorities in Maine were left perplexed recently when an ATM machine was found miles from anywhere.
80
Tia Wilson of Durham, Maine captured the eerie image on a game camera she had set up in her garden.
52
In 1917, two English schoolgirls claimed to have photographed fairies at the bottom of their garden.
6
Hair belonging to the first ever President of the United States has been found in an 18th-century almanac.
9
A major new discovery has revealed tens of thousands of hidden pyramids, houses, defence works and more.
3
The 'Tolkienesque' landscape is made up of 26 underwater volcanoes buried beneath seabed sediment.
12
Considered to be a 'living fossil', the frilled shark has remained unchanged for over 80 million years.
7
An Oxford University professor believes he may have pieced together the identity of Leonardo's mother.
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A bizarre encounter by six schoolchildren in 1979 is the subject of a new investigation by Dr Simon Young.
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Astronaut Scott Kelly spent 340 days aboard the space station while his twin brother remained on Earth.
12
A storm off the coast of Germany has strewn large numbers of Kinder eggs all along the shoreline.