See http://www.bbc.co.uk/news/technology-30290540 .
The world famous Cambridge scientist Professor Stephen Hawking has warned that AI may result in the end of the human race. He has been suffering from Motor Neuron Disease (MND) for very many years now, but his brain is as sharp as ever.
I have only seen him once in Cambridge, in his wheelchair. When he eventually dies, the world will have lost one of its very best minds. It is amazing he has beaten his condition for so long.