In recent times, famed astrophysicist Stephen Hawking has become something of a hawk when it comes to human survival.
His fears have been profound. His warnings have been chilling.
He told us earthlings just last year that aliens might swoop down on us and devour us whole, while plundering what's worth taking from here. You know, a few Ferraris, an iPhone or two, Selma Blair, Yosemite, Aziza restaurant in San Francisco, and a couple of Himalayas just to look at.