Neutrinos help reconcile Planck measurements with the local universe.

@article{Wyman2014NeutrinosHR,
  title={Neutrinos help reconcile Planck measurements with the local universe.},
  author={Mark Wyman and Douglas H. Rudd and R. Ali Vanderveld and Wayne T. Hu},
  journal={Physical review letters},
  year={2014},
  volume={112 5},
  pages={051302}
}
Current measurements of the low and high redshift Universe are in tension if we restrict ourselves to the standard six-parameter model of flat ΛCDM. This tension has two parts. First, the Planck satellite data suggest a higher normalization of matter perturbations than local measurements of galaxy clusters. Second, the expansion rate of the Universe today, H0, derived from local distance-redshift measurements is significantly higher than that inferred using the acoustic scale in galaxy surveys… CONTINUE READING

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