Forestry workers in Scotland had been felling trees when they came across a heavy iron door in the ground.
Scientists believe that organic compounds known as thiophenes could be an indicator of life on Mars.
One of the world's oldest swords has been discovered in a display cabinet at an Italian island monastery.
Palaeontologists report that they have retrieved DNA from dinosaur fossils dating back to the Cretaceous.
An expedition team has identified a previously unseen landmass that has been exposed by melting ice.
The discovery of a large feline print in the Blue Mountains has reignited speculation of a mystery big cat.
Renovation workers have uncovered a forgotten passageway in the UK's Houses of Parliament.
For the first time ever, researchers have identified an animal that does not need to breathe oxygen to survive.
A beachgoer in Cape Canaveral, Florida recently came across a rather disturbing object washed up on the sand.
For the first time ever, scientists have discovered evidence of molecular oxygen in a distant galaxy.
This distinctive disc-shaped cloud formation was recently photographed by a worker in the Cascade Mountains.
Palaeontologists have revealed the discovery of one of the most significant Neanderthal skeletons in a decade.
A new poll has revealed what Americans really think about UFOs, Area 51 and government cover-ups.
A new species of tyrannosaur that roamed the Earth 80 million years ago has been unearthed in Canada.
Astronomers have discovered the first known example of a fast radio burst that repeats in a steady cycle.
Scientists have identified a strange new type of virus with a genome that is almost entirely unknown to science.
Tommy Hortman couldn't believe his eyes when he returned to his vehicle to discover this creature inside.
A gargantuan funnel-web spider that is double the normal size for its species has been discovered in Australia.
A huge flock of several thousand birds swarmed around disconcerted shoppers outside a store in Texas recently.
Archaeologists have confirmed the discovery of over 40 skeletons in shallow graves at a building site in England.