Kevin Hodgson's recent posts I learned about Dara O Briain's Science Club series on the BBC. The series currently has six episodes investigating the science of things like music and space. The full episodes cannot be watched in the U.S. (at least not through my ISP) but some short clips can be found on the BBC's YouTube channel. I am fond of the following four minute explanation of the science and story of exploration through time.
And here's the video that Kevin shared and prompted me to explore Dara O Briain's Science Club.