American independent consultant in the field of population and demography, Ph.D. Frejka worked in numerous countries as Senior Associate of the Population Council, New York (1969-1991), and Senior Population Expert at the United Nations Economic Commission for Europe, Geneva, Switzerland (1991-1996), and was Adjunct Professor of Public Health at Columbia University in New York (1977-2002). He made a great contribution to the study and solution of global demographic problems, the author of more than 200 publications.

Professor Coleman is a former St John’s Fellow and was Professor of Demography in 2002-13 and the Reader in Demography between 1996-2002, and Lecturer in Demography since 1980. Between 1985 and 1987 he worked for the British government, as the Special Adviser to the Home Secretary, and then to the Ministers of Housing and of the Environment. Research interests include the comparative demographic trends in the industrial world; the future of fertility, the demographic consequences of migration and the demography of ethnic minorities. International collaborative work continues on these topics at the Vienna Institute of Demography. He has worked as a consultant for the Home Office, for the United Nations and for private business.

Russian demographer, Doctor of Economics, Professor, Corresponding Member of the Russian Academy of Sciences, Director of the Institute for Demographic Research of the Federal Research Sociological Center of the Russian Academy of Sciences. Author of over 130 publications. Grant manager: "International migration in the border regions of Russia: patterns of behavior of the population and socio-economic effects for the development of territories", "The impact of the COVID-19 pandemic on the transformation of the labor market and employment in Russian regions", etc.

Yu Zhu is Professor of School of Geography; and Director of Center for Population and Development Research, at Fujian Normal University; He is also Professor of Asian Demographic Research Institute (ADRI) at Shanghai University, and leads the ADRI’s research pillar on Internal Migration and Urbanization. Yu ZHU is currently Vice-President of China Population Association; Director of the Committee on Population Geography, the Geographical Society of China; Member of Commission on Population Geography, International Geographical Union; Council Member of Asian Population Association, ect.

Honorary Professor of Demography at the Australian National University, PhD, Emeritus Professor at the University of Melbourne, former President of the International Union for the Scientific Study of Population. He is also currently a Public Policy Fellow at the Australian Academy of Social Sciences, Associate Director of the ARC Center of Excellence in Population Aging Research, and Advisor to the European Population Research Centre. He previously chaired the Australian Institute of Family Research, worked at the Demographic Institute of the University of Indonesia, as well as the World Fertility Survey in London and the Australian Bureau of Statistics. Author of more than 200 publications and participant in many international scientific projects in the field of population and demography.

Professor Clifford Odimegwu is a full professor of demography, social statistics and population health, and founding director of the Graduate Programme in Demography and Population Studies, at the University of the Witwatersrand, Johannesburg, South Africa. A product of the old Imo State University, Okigwe, Obafemi Awolowo University, Ife, and Harvard University School of Public, Prof Odimegwu’s expertise covers the field of technical demography, population health, public health, sociology, and social statistics. He has published over 200 papers incredible national and international peer-reviewed journals, including two co-edited books. Most of his publications can be found in the world-wide Researchgate platform or Google Scholar. He is one of the recognizable faces in African demography.