Percolation beyond ${\mathbb{Z}}^{\bolds{d}}$: The contributions of Oded   Schramm
  Oded Schramm (1961-2008) influenced greatly the development of percolation theory beyond the usual ${\mathbb{Z}}^d$ setting; in particular, the case of nonamenable lattices. Here, we review some of his work in this field. 
Olle H\"aggstr\"om
math.PR