  Data on low-energy hadron production in collisions of nucleons, pions and
kaons with light nuclei are needed for many astrophysical and accelerator
applications. Modern simulations have reached a level of accuracy that the lack
of detailed understanding of hadron production processes has become one of the
most important limitations to further improvements. After giving some examples
of hadroproduction processes in astrophysics and neutrino experiments we
briefly review existing fixed-target data on light nuclei. Preliminary results
and prospects of current CERN measurements (HARP, NA49) are discussed.
