"nu_e or not nu_e? And other oscillation questions..." ======================================================= Janet Conrad (Columbia University) Abstract: --------- This talk provides an introduction to the theory and data on neutrino oscillations. Many new results from neutrino oscillation searches have recently been presented. The solar neutrino deficit, atmospheric neutrino deficit and LSND excess all indicate that neutrino oscillations may occur. These results are exciting because neutrino oscillations require physics beyond the Standard Model. Models which incorporate these results are compared. The data raise many questions which upcoming neutrino experiments may answer. Highlights of these future searches are described.