> ## Content Index
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# Episode 2 Preview
- URL: https://www.cascadepbs.org/show/human-footprint/trailers/episode-2-preview-i9r2g9/
- Published: 2025-06-16T18:30:55.000Z
- Updated: 2025-08-20T18:49:24.000Z
- Description: We enlist allies from nature to fight in our battles. But is the enemy of an enemy always a friend?
- Author: Cascade PBS Staff
- Tags: Human Footprint, #ZZZ_Show_920c28e7-cc8d-4bd4-a6a1-1d54d80cf6c8, #geo-us, #v1.5, #ZZZ_Trailer_859361dd-cfa7-43e6-8a08-fc40a5a28f14, #trailer

In humankind’s conquest of planet Earth, we rely on improbable allies – species we’ve recruited from nature to help us defeat our adversaries. But in this brave new world of “biocontrol,” is the enemy of an enemy always a friend?