Name : Peter Gorham Institute : JPL/Caltech E-mail : Peter.W.Gorham@jpl.nasa.gov TITLE : Radio Cherenkov Limits on Diffuse ZeV Neutrino fluxes ABSTRACT : We present results of the first 30 hours of livetime for the Goldstone Lunar Ultra-high energy neutrino Experiment (GLUE), which is sensitive to pulsed microwave emission from neutrino-induced cascades in the lunar regolith. The microwave emission process has now been confirmed via accelerator results. We have established a dual-antenna technique which eliminates terrestrial interference backgrounds. No strong candidates are yet seen, and we constrain some of the highest models for diffuse cosmic ZeV neutrinos.