Several observational programmes will focus specifically on Wolf-Rayet stars. These stars represent the most advanced observed stage of massive star evolution, are and so are the immediate progenitors of supernovae. Wolf-Rayet stars are readily observed in external galaxies due to the strong emission lines produced by their powerful stellar winds, such that their outflows are 100 million times greater than the solar wind! We will determine the physical, chemical and evolutionary properties of a large sample of WR stars by undertaking quantitative analyses using state-of-the-art model atmosphere codes (e.g. Far-UV FUSE spectroscopy of the OVI resonance doublet in Sand 2 (WO))