A few bubbles in a glass

I briefly review a recent series of papers aiming at obtaining a coarse-grained theoretical description of the physics of supercooled liquids approaching their glass transition. After a suitable coarse-graining, the liquid is mapped onto a mobility field, the properties of which being amenable to detailed analytic treatments. The statistical properties of the mobility field then determine those of the liquid. Thermodynamic, spatial, topographic, dynamic properties of the liquid can then be quantitatively described within a single framework, and derive from the existence of an underlying dynamic critical point located at zero-temperature, where timescales and lengthscales diverge.