Exploring the dusty star-formation in the early Universe using intensity
  mapping
  In the last decade, it has become clear that the dust-enshrouded star
formation contributes significantly to early galaxy evolution. Detection of
dust is therefore essential in determining the properties of galaxies in the
high-redshift universe. This requires observations at the (sub-)millimeter
wavelengths. Unfortunately, sensitivity and background confusion of single dish
observations on the one hand, and mapping efficiency of interferometers on the
other hand, pose unique challenges to observers. One promising route to
overcome these difficulties is intensity mapping of fluctuations which exploits
the confusion-limited regime and measures the collective light emission from
all sources, including unresolved faint galaxies. We discuss in this
contribution how 2D and 3D intensity mapping can measure the dusty star
formation at high redshift, through the Cosmic Infrared Background (2D) and
[CII] fine structure transition (3D) anisotropies.
