The world needs a new source of energy, an unspillable source.

how does this pic explain how nuclear energy is clean?

would you plz tell me how does this picture explain how nuclear energy is clean and beneficial?? http://i227.photobucket.com/albums/dd309/ronya1/Picture1.png

thank you :)
i meant how can i use this picture to talk about how nuclear energy can be beneficial and clean?
thanks :)