A quick look at the diffuse interstellar medium.- Radiative transfer considerations.- The diffuse ISM from the ground - chemistry and tracers.- Observing the diffuse ISM - making sense of the radio observations.- Observing the diffuse ISM - the space missions.- Observing in the Dark: The Dust-Gas Connection.- Surveying the molecular Milky Way.- The relationship between CO and H2.- Surveys for high-latitude molecular clouds.- Distances.- Dynamical Considerations: Instabilities and Turbulence.- Coda.-
Loris Magnani is Professor of Astronomy at the University of Georgia, USA.
Steve Shore is Professore Ordinario, Astrofisica, Dipartimento di Fisica Enrico Fermi, Universita di Pisa, Italy. He serves as associate editor of the journal Astronomy & Astrophysics.