I've got a serious concern about water pollution, which has led to my expression of what I consider to be mild concern about the scene in which an anonymous delinquent places Tony Stark's arc reactor on a wreath and sends it floating upstream. This scene is very poignant and is very moving to most fans. But I'm worried about this because of what it says to me, as an experienced conservationist who has witnessed the growth of water pollution over nearly six decades, about the public awareness of water pollution.
This widespread problem of water pollution is jeopardizing our health. Unsafe water kills more people each year than war and all other forms of violence combined. Meanwhile, our drinkable water sources are finite: Less than 1 percent of the earth's freshwater is actually accessible to us. Without action, the challenges will only increase by 2050, when global demand for freshwater is expected to be one-third grearer than it is now.
For further reading I suggest a remarkably unfictional website, Wikipedia.
https://en.m.wikipedia.org/wiki/Water_pollution
