Residents were left perplexed this week when the waters of Spain's Valira River turned a strange color.
Three elusive True's beaked whales have been captured on camera during an expedition to the Azores.
Sierra Nevada's Dream Chaser space plane is being readied for a new series of tests in California.
Archaeologists have discovered an ancient table-like stone structure inscribed with mysterious artwork.
A tree at a cemetery in St Louis, Missouri was left smouldering after it was hit by a bolt of lightning.
Scientists have revealed that Mars was much wetter and therefore more habitable than previously thought.
Engineers have fitted CERN's record-breaking particle accelerator with its first major upgrade.
Scientists have found that frogs and toads possess night vision superior to that of all other animals.
An analysis of mammoth DNA has revealed that the species had become wracked with genetic disease.
In a world first, researchers have managed to create artificial embryos using the stem cells of mice.
Thousands of people turned out last week to throw oranges at one another in the streets of Ivrea.
Special humanoid robots could soon be used to help grow replacement skin, bones and organs for patients.
A 13-year-old girl has managed to capture a photograph of an anomalous figure on her mobile phone.
An intriguing optical illusion involving a plate of strawberries has been doing the rounds online.
Robotics firm Boston Dynamics has released new footage of its unnerving new two-wheeled robot 'Handle'.
A new study has indicated that resurrecting long-extinct species could ultimately do more harm than good.
Marine biologists have recorded footage of a remarkable jellyfish in the depths of the South Pacific.
The private space firm has revealed that it will be sending two people to the Moon as early as next year.
A new team is set to attempt a last-ditch effort to find evidence of a secret chamber in the tomb.
Biologists have warned that up to a half of all species could be wiped out by the end of the century.