In 2018, the idea that we need a special holiday to be scared feels a little strange. Zombies, vampires, and werewolves don’t seem so frightening when the real world provides us with Vladimir Putin, white supremacists, and greenhouse gas emissions. And trust me, as a climate scientist, I’m frightened every day. Watching our best projections of future climate is like watching a horror movie you can’t walk out of. And the worst part is the willful ignorance of the characters. I mean, who could be so stupid as to walk straight into a house they know is haunted?