But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.

On the tiny blue planet we see from space, the light side of the force is clean, green and renewable.

Now we have a clean source of water and safe latrines in our homes and schools.

They are unclean for you.

And this creates not only a problem, but great opportunity -- great opportunity for common efforts to find clean energy solutions.