  In this review we briefly summarize the recent developments in the research
on Gamma-Ray Bursts, and discuss in more details the recent results derived
from X-ray spectroscopy, in particular the detection of X-ray narrow features
and their implication on our understanding on the origin of GRB. Finally, we
outline the importance of high resolution spectroscopy in X-rays, which can
provide new clues on the nature of progenitors, and a powerful probe of the
early Universe and primordial galaxy formation .
