Everyone of us on this planet is responsible for the nuclear disaster in Japan?

Greed. We all want gadgets, be rich, live comfortably, etc. It's because all these that we demand more energy. Now that a nuclear disaster has occurred (and not the first time in history), I only hear people worrying and asking about whether the radioactive substance in the air will reach different parts of the world and affect their health. You're selfish, and you should feel ashame of yourself. Think about the Toyota, Honda, Nissan that you drive. Think about the electronics that you use which are made in Japan. Look at the discipline of the Japanese people, even in chaos, they're not killing/fighting each other for survival but helping each other to get through this event. Look at you people, looting would be the first thing in your mind.