Precision Measurements of the Cosmic Microwave Background

Fifty years after the first detection, we are now in the era of precision measurements of the Cosmic Microwave Background (CMB). The spectrum, anisotropy and polarization of the CMB have been measured with outstanding precision. The results support the hot big bang theory, and the adiabatic inflationaly scenario for the formation of large-scale structures in the Universe, with cold dark matter and dark energy. This is a short report on the latest experimental results, with mention of their impact on fundamental physics, and in particular on neutrino physics, the subject of this conference. We focus on spaceborne experiments, aimed at measuring the finest details of the CMB with final precision and accuracy.