  Supernovae (SNe) play a critical role in the metal enrichment of the
intra-cluster medium (ICM) in galaxy clusters. Not only are SNe the main source
for metals, but they may also supply the energy to eject enriched gas from
galaxies by winds. However, measurements of SN rates in galaxy clusters have
not been published to date. We have initiated a program to find SNe in 163
medium-redshift (0.06<z<0.2) Abell clusters, using the Wise Observatory 1m
telescope. Our program has already discovered 11 spectroscopically confirmed
SNe at z=0.1 - 0.24, and several unconfirmed SNe. We present the main
scientific goals of this project, and discuss a novel explanation for the
centrally enhanced metal abundances indicated by X-ray observations of galaxy
clusters, based on the contribution of intergalactic SNe.
