So occasionally I see something in the news about some teenage who built a nuclear reactor in his basement. And just the other day, my girlfriend told me that one of her clients mentioned that her boyfriend is a Physics major at my university, and has a nuclear reactor in his garage that he started building when he was 12. Needless to say, this is all making me feel pretty inadequate. But all of the aside, I was wondering how people even go about doing something like that, regardless of their age. Wouldn't it be highly illegal to do something like that? How do they get a hold of radioactive materials? And wouldn't it cost A LOT of money to make? I'm just curious if these people are just insanely talented/lucky/wealthy, or if building a nuclear reactor isn't as hard as I thought.