  Large scale structure and microwave background anisotropies are studied for
warm dark matter models. Two warm dark matter candidates are considered:
gravitinos and sterile neutrinos. Linear large scale structure properties such
as $\sigma_{8}$ and the excess power are calculated, as well as microwave
background anisotropies. A rather robust feature of warm dark matter models is
that the large scale structure properties are similar to those of mixed dark
matter, but that the microwave background anisotropy is very similar to that of
standard cold dark matter.
