Its called plant botany. Same premises goes for just about every plant on the face of this earth. Flushing is also debated, some don't flush at all and claim to not taste any chemicals. And plant science suggest the same. I still flush no matter what.
Some guy discovered pot it the 60s maaaan.... Kidding lol, wondering who discovered cannabis is about as an eternal question as who first seen the sun lol
Funny side story, back when a friend of mine was in university. He showed me some archeological dig they were doing something related to his course, and they were trying to prove cannabis was around during the dinosaurs or his group was or something. and loan behold there was a fossil of what appeared to be a pot leaf. I was high he was high was about 10 years ago. I do remember it though, I saw it with my own two eyes. Not funny "Hahahahah", funny "hmmm"
Now that I think back, that pot leaf must have been massive. Off too Google there's gotta be someone else who's seen this. Or is this common knowledge and just news to me? Hahahha
Sorry lol I yap a lot.