::This seems like a reliable source to me. From wp:rs: "However, audio, video, and multimedia materials that have been recorded then broadcast, distributed, or archived by a reputable party may also meet the necessary criteria to be considered reliable sources." PBS qualifies as reputable, and the host is a physicist. The contents of the video are (mostly) aligned with what is currently presented in the article, it's just that the emphasis and presentation are different and more straightforward, which is exactly what the discussion above says needs to happen with the lede here.