system
A chat on subreddit /r/me_irl
human
This was pretty common back before folks realized we were fucking up the environment. 

Back in the 1960’s my grandpa had a spot behind his garage where he poured his used motor oil. 30 years later that spot still smelled and looked like old oil.
gpt
My mom accidentally spilled gas in our yard when I was a kid when she was refilling the lawnmower. The immediate effects were obvious, all the grass died in that area. We dung up the area, reseeded it, multiple times. Couldn't get grass to grow there for years.