  Conventional SO(10) models involve more than one scale for a complete
breaking of the GUT symmetry requiring further assumptions on the VEVs of the
Higgs fields that enter in the breaking to achieve viable models. Recent works
where the breaking can be accomplished at one scale are discussed. These
include models with just a pair of $144+\bar{144}$ of Higgs fields. Further
extensions of this idea utilizing $560+ \bar{560}$ of Higgs representations
allow both the breaking at one scale, as well as accomplish a natural
doublet-triplet splitting via the missing partner mechanism. More generally, we
discuss the connection of high scale models to low energy physics in the
context of supergravity grand unification. Here we discuss a natural solution
to the little hierarchy problem and also discuss the implications of the LHC
data for supersymmetry. It is shown that the LHC data implies that most of the
parameter space of supergravity models consistent with the data lie on the
Hyperbolic Branch of radiative breaking of the electroweak symmetry and more
specifically on the Focal Surface of the Hyperbolic Branch. A discussion is
also given of the implications of recent LHC data on the Higgs boson mass for
the discovery of supersymmetry and for the search for dark matter.
