For Sale: Lunar Regolith

I didn't put any really complex thought into deciding what the first educational post was going to be about; I just came across an article that I found interesting, and went from there. In this case, it was an article from NASA about purchasing lunar regolith (yes, is my browser's homepage). There were two, primary dimensions to this article, and they're worth analyzing independently: in-situ resource utilization, and international space law.