I took my DS12 and DD10 to a plant nursery to pick out something and my DS began talking to the nurseryman about various types of club mosses and plants that existed in the prehistoric era and the nurseryman shared some interesting information with him about lichen (it is actually a symbiotic organism, both a fungus and an algae). When he asked my kids what they wanted to be when they grew up my DS said biologist (a given) and my DD said an oncologist...

He looked at me and said you have your hands full don't you...