In every other science fiction series, humans are at the top of the food chain. In the 'Babylon 5' universe, they're in the bottom third.

We walk in dark places no others will enter. We stand on the bridge and no one may pass. We live for the One. We die for the One. -- the Ranger oath

When you're a dancer who is injured, you are at the bottom of the food chain. We are so replaceable.

If you're overfishing at the top of the food chain, and acidifying the ocean at the bottom, you're creating a squeeze that could conceivably collapse the whole system.

We are in a tech-heavy society, plunging headlong into an unknown future. Science fiction is what allows you to stand back and analyze the impact of that and put it in context of how it affects people.

Food safety involves everybody in the food chain.