I just came across a video of Sam Harris being interviewed in the jungle about his views on AI.
For those of you who have a bit more time, you can see him give a slighter longer and more nuanced rendition of his views here:
He also takes part in a panel discussion on this topic with a number of phenomenal people including Elon Musk and Demis Hassabis.
And, finally, should you want more, he also often addresses this on his excellent Waking Up podcast, such as in the following episodes: