1] Pluto was still one of the nine planets
2] Brontosaurus was still a real dinosaur. I just learned a few posts back that apparently, no, Brontosaurus was not a real dinosaur. In rebellion, I have screamed at all of my "Land Before Time" movies, crying "Why? Why did you lie?!"
3] The only kids who had cell phones were the ones with rich parents.
4] In science, it was still taught that the universe would have the Big Crunch, and then another Big Bang.