This Week in Science:

It’s time for “Nerd News,” covering news for your brain . . . a study that found grocery stores that sell beer also sell more snacks. A fossil hunter in Denmark found a 66-million-year-old pile of puke (experts think a fish barfed it up back in the Cretaceous period). And China armed a drone and robot dog with fireworks, and let them fight it out. (Here’s the video)