I remember throwing plastic bottles off a river bridge with my class in 3rd grade. While it's true that the river connected to an ocean some 400km downstream, I

I remember throwing plastic bottles off a river bridge with my class in 3rd grade. While it's true that the river connected to an ocean some 400km downstream, I doubt they made it further than the next best river bank. I sincerely hope that since then schools have stopped encouraging children to throw plastic in waterways like this.