Stephen Hawking has netted a $3 million prize from a Russian billionaire who dropped out of a physics PhD to make money from social media. A similar pot is to be shared by seven scientists at CERN.
They say strangers are just friends you haven't met yet - but it's not a view Stephen Hawking shares. In a new documentary series for the Discovery channel, he suggests that we should be avoiding making contact with aliens at all costs.
