The list

• ChannelCrash Course BiologyHank Green’s biology playlist is a fast map of the school syllabus. Use it to preview a topic, then come back here for the experiment that the pace had to compress.
• ChannelAmoeba SistersShort, accurate animations of cell biology and genetics. Excellent when a process has too many nouns. Pause and redraw their diagram from memory.
• LecturesiBiologyWorking scientists explaining their own fields at a length a talk can bear. Closer to a seminar than to a summary. The YouTube mirror is at youtube.com/@iBiology.
• ClassroomHHMI BioInteractiveFilms, data-rich activities, and the famous animations made with serious scientific advice. The holiday lectures from Howard Hughes Medical Institute remain a model of how to teach without talking down.
• FilmThe Inner Life of the CellThe XVIVO / Harvard animation. It is a depiction, not footage. Molecules do not have these colours, and the cell is more crowded than the camera suggests. Watch it for the traffic, then read the essay The cell is not a factory.
• LookingJourney to the MicrocosmosPond water, filmed with patience and a microscope. The closest thing on this list to Leeuwenhoek’s desk. The narration is careful about what is not known.
• LookingDeep LookKQED’s close-up natural history. Short enough for a class and specific enough that you learn one organism rather than a moral about nature.
• JournalNatureFilms from the journal Nature. Follow any claim that matters into the paper. The film is the door.
• PracticeKhan Academy BiologyWorked explanations and questions, calmer than a video essay. Useful when a pathway will not stay in memory. Pair a weak quiz result with the matching unit.
• ArchiveDNA Learning CenterCold Spring Harbor’s public genetics archive, including interviews with people who did the classic experiments. Primary in a way a textbook cannot be.

How to watch

One film, then five written sentences: what was shown, what was asserted, what was left out, which page of this site it touches, and what you still do not know. That last sentence is the one that makes the next hour useful. Animations are models. Treat a colour as a label, not as a photograph.