Number 14 (Story #5), December 27, 1990 by Phillip F. Schewe and Ben Stein TOP AND BOTTOM QUARKS are the chief quarry for proposed accelerator projects in the next five years. Cornell and Stanford are competing for the chance to build "B factories," in which the properties of bottom quarks and the nature of CP violation could be studied. Also Fermilab would like to build a new proton injector ring for the Tevatron Collider, which would provide a more intense beam and a better chance of observing the elusive top quark. These two projects, which would cost between $100 and $160 million, were assigned the highest priority by a Department of Energy panel asked to examine particle-physics goals for the period prior to the SSC. (Physics Today, December 1990.)