Some cool news about gold has come out recently; not that it’s a “great hedge against inflation” or that the “latest Monster cables have gold connectors for BLAZING SPEED!” Instead, it’s some news about nanotechnology: researchers have been working on new applications for gold nanorods. At the same time, a report very recently came out about medieval church windows, and their usage of gold particulates to purify the air in the churches they decorated. It seems early forges, without fully understanding it, used a coating of gold to soak up sunlight. In this energized state, the gold particles would eliminate volatile and toxic compounds in the air. Personally, the medieval usage of gold sounds more fantastic to me than nanorods, if you can believe it.