Following up on my reading of Bostrom's book: Superintelligence, this 2015 article. My take on this is that the dangers are still decades away, but does need to be thought about now.
The New Yorker, November 23, 2015
The Doomsday Invention
Will artificial intelligence bring us utopia or destruction?
Features work of Nick Bostrum
By Raffi Khatchadourian