Title: Cosmological Parameters from Planck and Constraints on Neutrino Physics


I will briefly review results from the first Planck data release, and explain how they can be used to measure various cosmological parameters. I'll describe the problems of model dependence and degeneracies, and then focus on what the data can tell us about neutrino physics: constraints on both total energy density and mass, and constraints on the properties of massive sterile neutrinos.