Emily St. JamesM. Night Shyamalan is one of few filmmakers at his level of fame who seems pretty obsessed with climate change and the horrors it will visit upon the Earth. He keeps returning to it as a topic for horror movies, both overt (The Happening) and more subtextual (Old, Knock at the Cabin).
Knock at the Cabin also in conversation with Michael Tolkin's The Rapture?????
(I mean, the book was playing in that territory, so this is not all that surprising, but.)