I. Benjamini, H. Dunimil-Copin and T. Smirnova-Nagnibeda are organizing a semester on Analytic and Geometric Aspects of Probability on Graphs at the Centre Interfacultaire Bernoulli, Lausanne. The program will take place from July 1 to December 31, 2015. The program of the semester is structured around one Summer School and two Conferences. Two or three colloquium-style Bernoulli lectures will take place during the semester. In between the conferences, a small number of scientists will be in residence at the CIB, thus providing the opportunity for collaborations between experts in different fields.