My theory on how the world would end isn't like in the movies or sci-fi books. It's always a slow, scary process in works of fiction. I think one day I'll be taking a walk and think, "wow, it got hot all of a sudden," and then that will be it. With one flash we'll all be gone. Doesn't that sound a lot better than running away from tsunamis and fire tornados? Maybe Dwayne the Rock Johnson could survive a geostorm, but not most of us.
In this depiction of global warming we see a slow burn. People are so used to the scorching heat that they're cooking steaks outside. I've heard of frying an egg on the sidewalk, but this is a little ridiculous. You better like your steak extra rare and your skill well-done.