While I'm on a riff about social justice causes I'm particularly passionate about, here's another one I believe can make a significant difference in the world:
Digging wells for clean water in African villages is not only a simple, powerful step toward a better life and health for millions, I also believe it has an impact politically on a worldwide scale...as many of the poorest nations have become the prime recruiting grounds for terrorist organizations because they are full of disempowered angry young men who have no sense of hope for a better life. Give these disenfranchised youth a future and a hope, and they will not be so quick to become suicide bombers or take up arms against others in the name of religious fanaticism.
Here's a video that explains more about what Bloodwater Mission does:
5 hours ago