The eminent writer and neurologist has died of cancer at his home in New York. He was 82.
The government says "strong action" is required but opponents call the plans "chaotic". The heated debate over the effectiveness of badger culls wears on as the cull is extended into Dorset.
Babies who are about to be given the new meningitis vaccine are likely to suffer a fever that can last several days, Public Health England is warning parents.
Flibanserin, widely dubbed "female viagra", is approved for public use by the US drug authority, despite having rejected it twice before. Should women steer clear of a drug critics say is unnecessary?
Soaring cases of diabetes threaten to "bankrupt the NHS", charity Diabetes UK warns.
The celebrated cosmologist teams up with billionaire Russian entrepreneur Yuri Milner as they launch a quest to discover life elsewhere in the universe.
Government advisers warn that the British diet should be made up of no more than 5 per cent sugar - just seven teaspoons and half of the current advice.
The three-bedroom family home near Bridgend - which took just 16 weeks to construct - can export more power to the grid than it consumes, experts say.
Almost 30 years after the Chernobyl nuclear disaster, which turned the area around the plant into a no-go zone, scientists are involved in a unique experiment in how nature copes with radiation.