Hey, look! A scientist from the local college was here! She left some things behind by accident after presenting to another class. Is it? Can it be? It is! Next to this box is a lump of radioactive material. Don’t worry too much, though. This is low-level radiation. You’ve got plenty of time. You’ll be fine. Take a look, touch it, how does it feel? Now you should stick it back in the box. What do you mean it’s locked? You need to get that lump back into the safety of that box! You have 45 minutes. Don’t ask what happens if you fail.