The big problem with water is that we don't actually consume very much of it. It really just goes round and round. So it rains, flows into rivers, the rivers flow into the sea, the water is evaporated back into the air where it falls as rain again.
Certainly, for people with insufficient water who live near the sea it would be possible to install desalination plants to remove the salt from the sea water and turn it into drinking water. A state like California would be well-placed to do this. They currently have a drought, live by the Pacific Ocean and have lots of sunshine for solar power.
It is harder for countries like Africa because they are enormous - as big as the USA, China, Europe, Japan and India all combined. So lots of people can be a long way from the sea.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.