Sergio DellaPergola is professor emeritus and former chairman of The Hebrew University of Jerusalem’s Avraham Harman Research Institute of Contemporary Jewry. A specialist on the demography of world Jewry, he has authored and edited numerous books and monographs, including the annual World Jewish Population chapter in the American Jewish Year Book since 1982. He is the recipient of the Marshall Sklare Award from the Association for the Social Scientific Study of Jewry (1999), and the Michael Landau Prize for Demography and Migration (2013). He has advised the State of Israel’s president and many other major Israeli and international organizations, and lectured at over 100 universities in six continents. Born in Italy, he has lived in Israel since 1966.