  In this contribution we present a few selected examples of how the latest
generation of space-based instrumentation -- NASA's Chandra X-ray Observatory
and the Far-Ultraviolet Spectroscopic Explorer (FUSE) -- are finally answering
old questions about the influence of massive star feedback on the warm and hot
phases of the ISM and IGM. In particular, we discuss the physical origin of the
soft thermal X-ray emission in the halos of star-forming and starburst
galaxies, its relationship to extra-planar H-alpha emission, and plasma
diagnostics using FUSE observations of O VI absorption and emission.
