The article confidently explores the broadening of the demographic contingent of science. Since the end of the twentieth century, the problems of attracting the younger generation to science, studying international cooperation of scientists and migration patterns in science have become relevant issues. Also important are the issues of the influence of interdisciplinary education on obtaining breakthrough scientific results, determining the impact of the favorable scientific environment on the productive work of a scientist, the problems of inclusiveness of the scientific environment and the expansion of racial and ethnic representation in science. It is shown that although academic mobility of scientists is globally viewed as a process of internationalization of science, which contributes to the dissemination and exchange of knowledge and ideas, and the growth of scientists' productivity. However, given that in certain contexts mobility is associated with the loss of human resources in science, it should be viewed as a complex political problem of attracting and retaining scientists. This problem is exacerbated in times of military conflicts and socio-political crises. It is emphasized that despite the usefulness of scientists using the benefits of Open Science and participating in international research projects, attention should be paid to national and regional problems that require scientific support.