"Astrophysics with CMB Surveys"

High-resolution ground-based CMB experiments provide new perspectives on many areas of astrophysics. As examples, I will talk about current work using the South Pole Telescope as well as possibilities for future CMB experiments. I will discuss luminous mm-wave flares from nearby stars, mapping gravitational lensing on large scales, helium reionization, and searches for cosmic birefringence.