Also Verlinde has hold a talk at Cern in 28.4.11.
28 AprProf. Erik Verlinde, "On the Origin of Gravity, Dark Energy and Matter."
Insights from black hole physics and developments in string theory strongly indicate that the gravity is derived from an underlying microscopic description in which it has no a priori meaning. Starting from first principles we argue that inertia and gravity are caused by the fact that phase space volume (or entropy) associated with the underlying microscopic system is influenced by the positions of material objects. Application of these ideas to cosmology leads to surprising new insights into the nature of dark energy and dark matter.
So, he talks of Phase space now... We use concepts and observe phenomena at a macroscopic scale, which are derived from a microscopic scale where they have no a priori meaning. Gravity arises because the amount of phase space (information) available for these degrees of freedom is influenced by the location of matter in space and time.
The talk is here. Video here.