Lattice QCD allows us to simulate QCD at non-zero temperature and/or
densities. Such equilibrium thermodynamics calculations are relevant to the
physics of relativistic heavy-ion collisions. I give a brief review of the
field with emphasis on our work.Comment: 15 pages, 9 figures. Talk presented at SCGT06, Nagoya, Japan. Version
2 includes minor modifications to reference work not covered in version