Not a day goes by that I do not think of the wonder and almost spiritual brilliance of mushrooms and other fungi, because I am an ant and an invasive fungus has taken control of my brain. For the rest of you, here’s a reminder that slime mold once figured out Britain’s motorways system by itself. Advertisement Forgive me for not blogging this sooner. It’s one of those transportation facts that you come across and take as a given. But it has been making the rounds again on Twitter, reminding me that not everybody knows what I know, and not to take this stuff for granted.