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.
Pluto suffered one of the biggest demotions in history when it was downgraded from the solar system's ninth planet to a lowly Kuiper Belt Object. If it's not a planet, what is it? And who decides?
A study by the Met Office suggests that hot summers are likely to become more common in the UK by the end of the century.
Mining giant Cuadrilla is denied permission to start exploratory drilling and fracking at a site between Preston and Blackpool.
To claim Russian and Chinese intelligence had cracked the encryption of Ed Snowden's files, without a scintilla of evidence and series of "we don't knows", is going some.