Mystery of Wales turtle 'solved'
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Scientists think they may know why the world's largest leatherback turtle was washed up on a Welsh beach.
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Reports of a disease in birds is under investigation in north Wales, the assembly government announces.
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The BBC's Sue Nelson investigates claims that wild animals, who escaped the impact of the quake, may have a sixth sense.
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Archaeologists have uncovered what may have been a village for workers or festival-goers near the mysterious stone circle Stonehenge in England
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By Tom LochnerLegend is full of unsolved mysteries of ships that vanish without a trace. Port Costa offers a variation on the theme: the ship that appeared, apparently out of nowhere.
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A group of satellites captures evidence of what scientists believe is the killing of a rare sea turtle. But little can be done about it, they say. By Amit Asaravala.
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Scientists say the almost perfectly preserved carcass could help resolve the mystery as to why the mammoth became extinct -- and why we might.
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By Maggie FitzRoy  The rising sun painted the horizon pink one recent morning as Beaches Sea Turtle Patrol volunteer Shelli Martin walked the beach. In the dusty light, she looked for evidence that a female sea turtle had come ashore during the night, laid her eggs and headed back to sea.
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The fossil of a sea reptile with a neck twice as long as its body is solving the mystery of how some ancient reptiles used their long appendages.
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A fossil found in Wyoming resolves a puzzle over when bats gained their sonar-like ability to navigate and locate food.
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Paleontologists have discovered a species of protorosaur, and they think the fossils hold the solution to the mystery of long-necked dinosaurs.
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The mystery of whether dinosaurs were indifferent parents or cared for their young may have been solved by a discovery in China. More than 100 million years ago an adult dinosaur was buried
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It's a mystery even for researchers at the Smithsonian Institution:
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Mystery deepens over the disappearance of Glasgow accountant as DNA tests identify remains.
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A team of US researchers have claimed to have found convincing evidence of the lost city of Atlantis off the coast of Cyprus, the BBC reported.
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Norwegian researchers on a remote Arctic island have recovered rare fossil remains of two giant marine reptiles, one of them reminiscent of the fabled Loch Ness monster.
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German academics believe they have  solved the centuries-old mystery behind the identity of the  "Mona Lisa" in Leonardo da Vinci's famous portrait.