I heard about this just the other day on an episode of the Radiolab podcast, if you're interested in listening to a nice narration to complement the article: ht

I heard about this just the other day on an episode of the Radiolab podcast, if you're interested in listening to a nice narration to complement the article: https://www.wnycstudios.org/podcasts/radiolab/articles/invisible-allies https://www.wnycstudios.org/podcasts/radiolab/articles/invis...