There have been a number of important recent developments in theoretical and
observational studies of nucleosynthesis, especially regarding nucleosynthetic
sources at low metallicities. Those selected for discussion here include the
origin of Li6, the primary production of N, the s-process, and the supernova
sources for three groups of metals: (1) C to Zn with mass numbers A<70, (2) Sr
to Ag with A~90-110, and (3) r-process nuclei with A~130 and above.Comment: 8 pages, no figures, published in "Proceedings of First Stars III,"
Eds. Brian W. O'Shea, Alexander Heger & Tom Abe