Keeping with the theme of the last few weeks of science history videos, I couldn’t resist this very enthusiastic paean to physicist Richard Feynman, “The Great Explainer”. We posted some BBC footage of Feynman himself a few years ago, but this one, from SciShow, tells the story of his life, from the Manhattan Project, to Feynman Diagrams to figuring out why the space shuttle Challenger exploded. It does a nice job of capturing both the joy that Feynman brought to his research and his incredible gift for communicating complex concepts.