  The first stars in the universe are thought to be massive, forming in dark
matter halos with masses around 10^6 solar masses. Recent simulations suggest
that these metal-free (Population III) stars may form in binary or multiple
systems. Because of their high stellar masses and small host halos, their
feedback ionizes the surrounding 3 kpc of intergalactic medium and drives the
majority of the gas from the potential well. The next generation of stars then
must form in this gas-poor environment, creating the first galaxies that
produce the majority of ionizing radiation during cosmic reionization. I will
review the latest developments in the field of Population III star formation
and feedback and its impact on galaxy formation prior to reionization. In
particular, I will focus on the numerical simulations that have demonstrated
this sequence of events, ultimately leading to cosmic reionization.
