Evidence to date suggests that gold-gold collisions the Relativistic Heavy Ion Collider at Brookhaven are indeed creating a new state of hot, dense matter, but one quite different and even more remarkable than had been predicted. Instead of behaving like a gas of free quarks and gluons, as was expected, the matter created in RHIC's heavy ion collisions appears to be more like a "perfect" liquid.
If a universe explodes into existence, and no one is around to hear it, does it still make a sound? The answer, according to RHIC physicist John Cramer, is a resounding yes. You can listen to the reverberations the Big Bang sent ringing through the cosmos in a new sound file based on the cosmic microwave background that originated at the birth of time.