Interesting discussion on the bacteria living inside our cells. For example, many plants have bacteria that get inside the root system and then help fix nitrogen for the plant. Some sea slugs take the chloroplasts from algae they eat and incorporate it themselves, allowing them to get energy from light (photosynthesis): they become photosynthetic slugs.
Adults need science education more than kids do is also a good segment. And I agree strongly that we (as individuals and society) lose a great deal when we fail to help people enjoy learning about science during their whole lives.
I also like the usability of this widget above, where it lets you include the internal links easily into a video.
Related: Symbiotic relationship between ants and bacteria – Biologists Identified a New Way in Which Bacteria Hijack Healthy Cells – Using Bacteria to Carry Nanoparticles Into Cells – The Economic Consequences of Investing in Science Education