Melissa Graham (University of Victoria) Title: Type Ia Supernova Rates, Properties, and Host Galaxies from the CFHT Supernova Legacy Survey and the CFHT Multi-Epoch Nearby Cluster Survey. Abstract: CFHT SNLS: Type Ia supernova (SNIa) rates in different host galaxy populations have recently been used to fit the distribution of delay times between progenitor birth and explosion, and constrain progenitor scenarios. The apparent presence of short and long delay SNIa has led some to suggest there may be two distinct types of SNIa progenitors, but others data is consistent with a continuum. I will review new results which show the rates and properties of SNIa in radio-loud and infrared-bright host galaxies from the CFHT Supernova Legacy Survey support a continuum of SNIa progenitors. CFHT MENeaCS: The iron abundance of the intra-cluster medium (ICM) is higher than can be accounted for by the SNIa rate in galaxy clusters, with two possible solutions: galaxies eject nearly all their metals to the ICM, or a sufficient amount of SNIa explode from intra-cluster stars (ICS) and pollute to ICM directly. I will review the real-time analysis pipeline and first results from the CFHT Multi-Epoch NEArby Cluster Survey (MENeaCS), which will provide the best constraints on the SNIa rate in clusters and their contributions to the metal content of the ICM.