Lately, I've heard that the scientists at Brookhaven National Lab were able to create a collision between gold ions that generated 4 trillion degrees Celsius. They said that this amount of energy in the collision was more than enough, according to their calculations, to melt the nucleons into a plasma of quarks and gluons. Link: http://www.bnl.gov/rhic/news2/news.asp?a=1074&t=pr However, at CERN, they have a particle accelerator at 17 miles in circumference, much larger than the one at Brookhaven National Lab (2.4 miles in circumference.) So how come they didn't report similar news earlier, or maybe with the news of the 3.5 TeV particle collision lately? I'm fairly new at this subcategory of physics, so a discussion about this new discovery could hopefully benefit my knowledge on such science. Any ideas on this?