  We review some properties of N=8 gauged supergravity in four dimensions with
modified, but AdS invariant boundary conditions on the m^2=-2 scalars. There is
a one-parameter class of asymptotic conditions on these fields and the metric
components, for which the full AdS symmetry group is preserved. The generators
of the asymptotic symmetries are finite, but acquire a contribution from the
scalar fields. For a large class of such boundary conditions, we find there
exist black holes with scalar hair that are specified by a single conserved
charge. Since Schwarschild-AdS is a solution too for all boundary conditions,
this provides an example of black hole non-uniqueness. We also show there exist
solutions where smooth initial data evolve to a big crunch singularity. This
opens up the possibility of using the dual conformal field theory to obtain a
fully quantum description of the cosmological singularity, and we report on a
preliminary study of this.
