WARNING: CONTAINS DON’T LOOK UP SPOILERS 

Leonardo DiCaprio was the one who came up with the ‘devastating’ final line in apocalyptic sci-fi flick Don’t Look Up, according to director Adam McKay. 

DiCaprio stars in the movie as Dr Randall Mindy, an astronomy professor who – along with astronomy grad student Kate Dibiasky (Jennifer Lawrence) - discovers there is a comet headed towards Earth. Together, they embark on a media tour to warn the world, despite the fact the world doesn’t really seem to give two hoots.