  Understanding of the nature of gamma-ray bursts (GRBs) is one of the
challenging problem facing the astrophysics community. The field of gamma ray
bursts is a rapidly developing one and we expect that new missions, like SWIFT
and GLAST will bring the field to a new quantitative level. The detail of the
explosion, the formation of the fireball, its propagation, the generation of
the shocks, the source of the magnetic fields and soft photons, the particle
acceleration process, and the details of the radiation process are all still
outstanding questions. The goal of this review is to attract the attention of
the community to a number of physical processes (MHD turbulence and particle
acceleration, magnetic reconnection, etc.) that seem to be very relevant for
these sources.
