Viktor Danilov-Danilyan (born May 9, 1938 in Moscow) - Russian scientist, economist, ecologist, hydrologist, corresponding member of the Russian Academy of Sciences (2003). Specialist in the field of environmental economics, economic and mathematical modeling, theory of sustainable development.Professor Danilov-Danilyan has extensive knowledge and experience in the field of ecology and hydrology, being the scientific director of the Institute of Water Problems of the Russian Academy of Sciences, in 2003–2018. He was the director of this institute. Danilov-Danilyan actively supports campaigns in Russia aimed at solving water problems and combating climate change.Along with a successful scientific career, Professor Danilov-Danilyan was Minister of Environmental Protection and Natural Resources of the Russian Federation (1991-1996), Chairman of the State Committee of the Russian Federation for Environmental Protection (1996-2000), Deputy of the State Duma of the Russian Federation (1994-1995).Professor Danilov-Danilyan is a laureate of the Prize of the Government of the Russian Federation in the field of science and technology "for the development and creation of an ecological complex, including a specialized complex for monitoring the ecological state of the aquatic environment and the carrier vessel" (1996).One of his most important applied works is the system of payment for negative impact on the environment, which has been widely implemented in Russia since 1991. Author and co-author of over 600 scientific papers, including over 30 monographs and about 100 articles in peer-reviewed journals.