Greed: A Fatal Desire [Gier - Ein verhängnisvolles Verlangen]

It's one of the seven deadly sins, and it seems to be an integral component of human nature. It could also serve as the gateway to moral bankruptcy and the trigger for global devastation. What drives our thirst for more, what is its impact on our personal sense of peace and the state of the world, and is it a behavior that can ever be unlearned?