The Similars

Some of the main influences for writer and director Isaac Ezban to create this story included the B-Movies of the 50's and 60's, the work of authors like Rod Serling, Richard Matheson, Philip K. Dick, Michael Crichton and Stephen King, TV shows like "The Twilight Zone", "The Outer Limits" and "Fringe", and movies like John Carpenter's "The Thing", Richard Kelly's "The Box", Wachowskis and Tom Tykwer's "Cloud Atlas", James Mangold's "Identity"and Philip Kaufman's "Invasion of the Body Snatchers"

It's stated in the movie that clouds are made of CO2, when in fact they are made of liquid water, H2O.