  A salient feature of Horava gravity is the anisotropic time variable. We
propose an alternative construction of the spacetime manifold which naturally
enables time anisotropy. We promote the role of curvature: the Ricci scalar R
at a given point sets the length scales for physical processes - including
gravity - in the local inertial frames enclosing that point. The manifold is a
patchwork of local regions; each region is Lorentz invariant and adopts a local
scale a_R defined as a_R = 1/sqrt|R|. In each local patch, the length scales of
physical processes are measured relatively to a_R, and only their dimensionless
ratios partake in the dynamics of physical processes. Time anisotropy arises by
requiring that the form - but not necessarily the parameters - of physical laws
be unchanged under variations of the local a_R as one moves on the manifold.
The time scaling is found to be dt ~ a_R^(3/2) whereas the spatial part scales
as dx ~ a_R.
  We show how to conjoin the local patches of the manifold in a way which
respects causality and special relativity, as well as the equivalence and
general covariance principles. All of Einstein's insights are preserved but the
parameters of physical laws are only valid locally and become functions of the
prevailing Ricci scalar. This alternative construction of the manifold permits
a unique choice for the Lagrangian of gravity coupled with matter. Curvature is
actively involved in the dynamics of physical processes by setting the scale
for them.
  In vacuo our theory takes the form of R^2 gravity and adopts a larger set of
solutions superseding those of Einstein-Hilbert action R. We provide two
solutions: one solution connects our work to Mannheim's theory of galactic
rotation curves; the other leads to novel properties for Schwarzschild black
holes. We apply the theory to address problems in cosmology and discuss its
implications in quantum gravity.
