Understanding how DNA transmits all it knows about cancer, physics, dreaming and love will keep man searching for some time.

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.

There is no place where we can safely store worn-out reactors or their garbage. No place!

We've got to search back to our last known safe landmark. I can't say exactly where, but I think it's back there at the start of the Industrial Revolution, we began applying energy in vast amounts to tools with which we began tearing the environment apart.