The Antarctica-nuking scene that almost made Project Hail Mary
Andy Weir's novel has a gloriously unhinged plan to deal with a dimming sun by blowing up a continent, and fans noticed it missing from the film. Drew Goddard explains what was cut and why it still bugs him, which is a nice window into how hard-SF ideas survive, or don't, the trip to the screen. Spoiler-light if you've read the book.