Great phrase! May I use it for a tag, pretty please?
On a more serious note, this is an excellent article that explains many things that mystified me about the significance of plutonium, as opposed to plain old uranium. That is, I wasn't quite sure why this was such a significant find, if true. Now that I know, I think I'll go off and conjecture for a while...
If memory serves me from my CBR training WAY back when - the significance is two-fold. (1) Smaller quantity of fuel is required, and (2) Thermo-nuclear explosion (what used to be referred to as H-bomb) results from plutonium. Much more powerful explosion - megaton range, as opposed to kiloton range of uranium explosion.
Feel (or perhaps Felix) free.