Apple's stock market valuation rises above $500bn joining only six other companies to have reached that mark.

The belief that older people tend to suffer worse sleep may be false - in fact the reverse may be true, according to US researchers.

Web-based treatment may be better at helping teenagers with chronic fatigue syndrome, say scientists.

From technologies which allow the brain to directly control computers to using electricity to enhance brain function, the way technology can "intervene" in the brain is being reviewed.

The US welcomes a pledge from North Korea to suspend uranium enrichment, as well as nuclear and long-range missile tests, in return for food aid.

The price of gold drops sharply as comments by the US Fed chairman raise hopes about the US economic recovery.

More than 40% of households in England are facing a council tax rise from April despite the government funding a freeze on bills, a survey suggests.

The police officer shot and blinded by gunman Raoul Moat is found dead at his home in Northumberland.