| Title | Comment | Keywords |
|---|---|---|
| Hydropower | 19:19 - 20:19 (01:00) / 1.5 MB | "fossil fuel", hydropower, dam, power, "wind power", "solar power", energy, "photo-voltaic cell", "external heat engine" |
| Brine | 23:25 - 25:01 (01:36) / 1.7 MB | "Fred Teeters", brine, groundwater, pressure, reservoir, drilling, well, nitrogen, steam, geothermal, power, energy, environment, "wind power", "photo-voltaic cell", structure |