Collisions of lead nuclei in the Large Hadron Collider (LHC) take place at such great energies that quarks that are normally confined inside nucleons are released and, together with the gluons that hold them together, form an exotic quark-gluon plasma. A new, more detailed theoretical model for this plasma, presented by a group of physicists from Poland and the U.S., predicts that it has a much lower viscosity than previously estimated.