Christophe Lavelle, Volume Editor, is a research scientist at the CNRS (National Center for Scientific Research), principal investigator at the National Museum of Natural History in Paris. His studies mostly concern the biophysical properties of DNA and dynamical processes at task in the nucleus. He teaches biophysics and epigenetics in several universities (Paris VI, Paris VII, Aix-Marseille, Lyon, Lille, Toulouse) and is a member of the American and the French Biophysical Societies.