  I review work on modelling the infrared and submillimetre SEDs of galaxies.
The underlying physical assumptions are discussed and spherically symmetric,
axisymmetric, and 3-dimensional radiative transfer codes are reviewed. Models
for galaxies with Spitzer IRS data and for galaxies in the Herschel-Hermes
survey are discussed. Searches for high redshift infrared and submillimetre
galaxies, the star formation history, the evolution of dust extinction, and
constraints from source-counts, are briefly discussed.
