The development of artificial intelligence is growing fast and hundreds of the world's leading scientists and entrepreneurs are urging a renewed focus on safety and ethics to prevent dangers to society.

An open letter was signed by famous physicist Stephen Hawking, Skype co-founder Jaan Tallinn, and SpaceX CEO Elon Musk along with some of the top minds from universities such as Harvard, Stanford, Massachusetts Institute of Technology (MIT), Cambridge, and Oxford, and companies like Google, Microsoft and IBM.

Twenty five fire engines battled a major fire at a power station near Oxford in England on Sunday that cast flames high into the sky.

Officials said the blaze at Didcot B Power Station was under control and that the electricity supply would not be affected.