Gamma Ray Bursts as Probes of the Distant Universe
  We review recent results on the high-redshift universe and the cosmic
evolution obtained using Gamma Ray Bursts (GRBs) as tracers of high-redshift
galaxies. Most of the results come from photometric and spectroscopic
observations of GRB host galaxies once the afterglow has faded away but also
from the analysis of the GRB afterglow line of sight as revealed by absorptions
in their optical spectrum.
