TeV-scale GUTs
  In this talk, we summarize our recent proposal for lowering the scale of grand unification to the TeV range though the appearance of extra spacetime dimensions. Particular emphasis is placed on the perturbativity and predictivity of our scenario, as well as its sensitivity to unification-scale effects.   (Proceedings of invited talks given by KRD at PASCOS '98; by TG at the European Network Meeting ``From the Planck Scale to the Electroweak Scale''; and by KRD and TG at SUSY '98.) 
Keith R. Dienes, Emilian Dudas, and Tony Gherghetta