Many ways and ideas on rain water harvesting. But First find out if you own the rain water. Some states require permits to catch rain water.
You may own the land, but not the rain from the sky. For more details on this go to drillcat.com/rain.
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.