  The emergent phenomenon of collective neutrino oscillations arises from
neutrino-neutrino interactions in environments with very large number of
neutrinos. Since such environments are likely sites of the heavy-element
synthesis, understanding all aspects of collective neutrino oscillations seems
to be necessary for a complete accounting of nucleosynthesis. I briefly
summarize some of the salient features along with recent work on the properties
and astrophysical applications of the collective neutrino oscillations.
