I live in the Pacific Northwest, so I enjoyed reading this story. Lichen! There's lots of it around these parts. If this event was to happen, I would probably move to an arid desert where there is little vegetation. Unless the lichen can grown on any surface then we're doomed!
A fun story!
It was fun to write 🤓 I don't know why but there is something satisfying about imagining extreme ways the world could end.