%0 Journal Article %T Electromagnetic radiation in heavy ion collisions: Progress and puzzles %A Charles Gale %J Physics %D 2012 %I arXiv %X We review the current state of photon and dilepton measurements at RHIC, emphasizing that of the theoretical work seeking to interpret them. We highlight the progress made recently in the modelling of relativistic nuclear collisions, and explore the effect on electromagnetic observables. Some outstanding puzzles are presented. %U http://arxiv.org/abs/1208.2289v3