Many episodes have incorporated geology, but this one is more about geography. (And amateur nuclear science.)

Element 94 causes a bit of a crisis for our collections.

To the person who said, "the episodes are never too long," I'm terribly sorry.

Time for the most traditional holiday celebration: A science lesson.

America's worst radioactive accident isn't Three Mile Island, and the Nazi nuclear physicist wasn't assassinated by the famous baseball player.

Sometimes we need a quiet moment in order to step back and look at the bigger picture.

Sure, thorium could provide practically limitless clean energy, but then we couldn't build weapons of mass destruction.

We all know that radioactive rocks glow in the dark, except they actually don't, except for when they actually do.

Out of all the characters who encounter radium in this episode, the only one to emerge unscathed is the guy who comes face-to-face with Satan.

You don't have to have a degree to do science, but it helps.

You know something's amiss when you set off the radiation alarms while walking in to the nuclear power plant.