The results from the last decade on the Cosmic Microwave Background and
large scale structure have set major milestones in our understanding of the
Universe. We now know the main cosmological parameters with very high
precision and we are able to constrain particle physics with cosmology.
I will illustrate different examples of how neutrino
properties may impact the cosmological observables and show that
cosmology can now provide tight limits on neutrino physical properties.
I will also discuss examples of interplay between foregrounds and
parameter estimation from the CMB, and the
expectations we have on parameter from the Planck satellite.