  The interplay between cosmology and earth based experiments is crucial in
order to pin down neutrino physics. Indeed cosmology can provide very tight,
yet model dependent, constraints on some neutrino properties. Here we focus on
the neutrino mass sum, reviewing the up to date current bounds and showing the
results of our forecast of the sensitivity of future experiments. Finally, we
discuss the case for sterile neutrinos, explaining how non standard sterile
neutrino self-interactions can reconcile the oscillation anomalies with
cosmology.
