This volume brings together articles on the subject of weak neutral currents from leading international researchers in the field of particle physics. The search for weak neutral currents began in the 1960s with the developmentof the Standard Model of Weinberg-Salam-Glashow, developed through the discoveries in the 1970s and 1980s of sub-atomic particles and their characteristics such as charm, quarks, gluons, and flavour. This text is intended to be of use to researchers in high-energy physics, physics and science.