There is a documentary film that I would like to introduce to you.
I watched the "prayer" of an English-language edition in San Diego last month. This movie explains scientifically that Praying is effective. It is even the distance from the east to the west of the United States. I impressed and sympathized with Dr. Kazuo Murakami of characters very much.
I also felt that the trend of the times this movie come out in the world.