Galactic Disk Formation and the Angular Momentum Problem
  Galactic disk formation requires knowledge about the initial conditions under
which disk galaxies form, the boundary conditions that affect their secular
evolution and the micro-physical processes that drive the multi-phase
interstellar medium and regulate their star formation history. Most of these
ingredients are still poorly understood. Recent high-resolution observations of
young high-redshift disk galaxies provide insight into early phases of galactic
disk formation and evolution. Combined with low-redshift disk data these
observations should eventually allow us to reconstruct the origin and evolution
of late-type galaxies. I summarize some of the major problems that need to be
addressed for a more consistent picture of galactic disk formation and
evolution.
