Energy saving light bulbs: mechanics, efficiency and designs
The remains of a monstrous "sea dragon" that swam in the seas some 180 million years ago have been unearthed in England.
The heart from a genetically modified pig has been transplanted into a Maryland man in a last-ditch effort to save his life.
Archaeologists have unearthed the bones of a young man and a dog killed by an ancient tsunami along the Aegean coast.