Politicians are like weather vanes. Our job is to make the wind blow.

We cannot go on fiddling while the earth's wild places burn.

Perhaps we'll realize that each of us has not one vote but ten thousand or a million.

Have fun saving the world, or you are just going to depress yourself.

Yet another proposal would have us rocket the waste into the sun, but, as you're probably aware, about one in ten of our space shots doesn't quite make it out of the earth's gravitational field.

Overpopulation is perhaps the biggest problem facing us, and immigration is part of that problem. It has to be addressed.

There are many different kinds of radioactive waste and each has its own half-life so, just to be on the safe side and to simplify matters, I base my calculations on the worst one and that's plutonium.