- We're watching the fungi move nutrients right now.
- Every plant, every animal has a different role in the whole ecosystem.
- [Narrator] The mystery.
- The real mushroom is underground, making long filaments, connecting to the trees.
- [Narrator] And the wonder.
- You can feel the presence of everything that is needed to keep us alive.
- [Narrator] Decoding the secrets of the forest on "NOVA."
(bright inspirational music)