Isoperimetry, scalar curvature, and mass in asymptotically flat   Riemannian $3$-manifolds
  Let $(M, g)$ be an asymptotically flat Riemannian $3$-manifold with non-negative scalar curvature and positive mass. We show that each leaf of the canonical foliation through stable constant mean curvature surfaces of the end of $(M, g)$ is uniquely isoperimetric for the volume it encloses. 
Otis Chodosh, Michael Eichmair, Yuguang Shi, Haobin Yu
math.DG