OK, now here's a question.
What's the biggest living organism on the planet?
A whale? A redwood tree?
Arguably it's armillaria, a huge honey fungus living in a forest in Oregon, USA.
It covers over nine square kilometres and is thought to be at least 2,400 years old.
Oh, and it glows in the dark.
Mind blown?
What if we also told you that other types of fungi can absorb oil spills, control insects' brains and that fungi in general are essential to all terrestrial life on Earth?
And there's still so much we don't know - more than 90% of the fungi in the world are currently unknown to science.
You could say there's mush-room for learning.
