[QUOTE=thir;960215]The biggest known concentration of stuff just evaporates?
Try this.
Still pretty hypothetical, but Hawking radiation has been observed.

And so I cannot understand how the universe (or anything else) ran 'run down' ?
Imagine striking a match in a large room. The heat around that match is pretty high, enough to burn you. As the match burns out the heat dissipates. Eventually, the infrared radiation will spread throughout the room, leaving the same amount of energy, but spread over a far larger volume. Pretty much the same as the universe. The energy remains, just much more spread out.