Here are a few articles on the news breaking out of the UK on a 2013 research initiative out of Cambridge University on the existential risks of AI/robots.
Robot uprising by Digital Trends
See also the Centre for the Study of Existenial Risk by Cambridge University (CSER)
"Many scientists are concerned that developments in human technology may soon pose new, extinction-level risks to our species as a whole. Such dangers have been suggested from progress in AI, from developments in biotechnology and artificial life, from nanotechnology, and from possible extreme effects of anthropogenic climate change. The seriousness of these risks is difficult to assess, but that in itself seems a cause for concern, given how much is at stake."