  I discuss the observational evidence that starburst galaxies are able to
drive galactic-scale outflows ("superwinds") and then argue generally that
superwinds must have had an important role in galaxy evolution. To explore the
role of feedback from massive stars, I review results suggesting that
starbursts seem to obey a limiting IR surface brightness of about 10^11 sloar
luminosities sq. kpc corresponding to a maximum star-formation rate of about 45
solar masses per yr per sq. kpc for a "normal" initial mass function. I
conclude by discussing the role of winds in determining this upper-limit and
discuss recent results implying that winds might actually escape the galactic
potentials in which they reside.
