I mentioned the podcast Fungi Town last year (and the year before), but I’ll mention it again because a) if you’re interested in fungi, you’ll definitely want to subscribe, and b) I myself am mentioned because I just started to support it on Patreon. (I was supporting it before, but stopped and restarted.)
The current show is the first of a two-part interview with Roo Vandegrift, who talks about a particular kind of fungi that live on leaves of trees: the fungi eat sugars made by the trees, but the trees aren’t hurt, and they like the fungi because the fungi are disliked by ants who want to eat the leaves. It’s like the trees are supplying food to a helpful army of fungal guards who defend against ant attackers.