Stephen Hawking Says A.I. Could Be Our 'Worst Mistake In History'

The world's most famous physicist is warning about the risks posed by machine superintelligence, saying that it could be the most significant thing to ever happen in human history — and possibly the last.

As we've discussed extensively here at io9, artificial superintelligence represents a potential existential threat to humanity, so it's good to see such a high profile scientist both understand the issue and do his part to get the word out.