A tour of the cell.
(Science Week, Day 3!)
Today's selection is a video I'd earmarked years ago, and only just watched. (Hail Science Week for spurring such actions!)
Even knowing nothing else about them, awareness that you possess over ten trillion biological cells is a stark hint about the animal body's vast complexity, and the fact we know this much is the beginning of a microscopic frontier within which biologists will journey for generations to come.
Here, Paul Andersen summarizes what's known about animal cells' components and what they do. It's a 15-minute session, but if school allowed you grow up without glancing this information – and even if the array of field-specific terms slips through your fingers – it's worth baring your attention for the awe at the graspable prospect of understanding this realm which so literally defines your existence.
(My one objection, of course, is that he refers to this single video repeatedly as a "podcast.")