Sergio DellaPergola is Professor of Population Studies at the Hebrew University’s Harman Institute of Contemporary Jewry and former Institute Chairman. He is also a Senior Fellow at the Jewish People Policy Planning Institute, an independent think tank in Jerusalem. A specialist on the demography of world Jewry, he has published numerous books and over one hundred papers on historical demography, the family, international migration and absorption, quantitative aspects of Jewish education and population projections in the Diaspora and Israel.