  In these lectures we first concentrate on the cosmological problems which,
hopefully, have to do with the new physics to be probed at the LHC: the nature
and origin of dark matter and generation of matter-antimatter asymmetry. We
give several examples showing the LHC cosmological potential. These are WIMPs
as cold dark matter, gravitinos as warm dark matter, and electroweak
baryogenesis as a mechanism for generating matter-antimatter asymmetry. In the
remaining part of the lectures we discuss the cosmological perturbations as a
tool for studying the epoch preceeding the conventional hot stage of the
cosmological evolution.
