The Day the Earth Stood Still

'The Day the Earth Stood Still' gives us a horrifying glimpse at how environmental degradation could destroy the world as we know it, wrapped together with a sci-fi setting.

Starring Keanu Reeves, Kathy Bates and Jon Hamm, the 2008 flick – which is a retelling of the 1951 classic of the same name - follows an extra-terrestrial visitor who tells worried world leaders that he is a "friend to the Earth", and is here to judge and ultimately exterminate humanity for its actions that led to climate change.