Mycology is the study of fungi, one of the six kingdoms of life. It includes topics all the way from mushrooms to bread mold and more. And here's a little secret: whoever knows a lot of mycology facts is a really fungi (or gal)!
White truffles, which are the world's most expensive edible fungus, cost on average about $4,300 per kilogram as of 2020.
The world's largest living organism is a fungus called Armillaria ostoyae which produces mushrooms usually referred to as honey mushrooms. The fungus has been growing for approximately 2,400 years and covers over 8.9 km2, an area equal to about 1,246 standard-sized soccer pitches.