The article presents the main stages of the scientific path of Ivan A. Heim (Bernhard Andreas von Heim, 1758–1821), a representative of the German academic society, who moved to Russia in 1779 and held the position of the rector of Moscow University from 1808 to 1819. I.A. Heim’s scientific heritage in the field of linguistics, geography and statistics is considered. The great merits of I.A. Heim in the organization of evacuation of Moscow University during the Patriotic War of 1812 and its subsequent restoration are shown.

May of 2026 marks the 150th anniversary of the outstanding biologist and geo­grapher, theorist and historian of science, Academician, Moscow University graduate Leo S. Berg (1876–1950), who became famous during his life as the greatest ichthyologist in our country. He published numerous papers with descriptions of single fish species, as well as general monographs on the ichthyofauna of our country and its regions. He also focused on fishing, domestic aquaculture and zoogeographical zoning by ichthyofauna. The article discusses L.S. Berg’s research on palaeontology, which began during his expeditions to the Aral Sea in 1899–1906. He studied the Meso-Cenozoic deposits of the Aral coastline and their fossil fauna. Since the 1930s, Leo Berg continued his palaeoichthyological research, studying in detail the Late Paleozoic, Mesozoic and Cenozoic actinopterygian and other fishes. He described a number of fossil taxa of ichthyofauna and critically revised the system of fossil agnathans and fishes. The article provides brief biographical information of L.S. Berg, one of the classics of world ichthyology in the 20th century.

The paper is devoted to the influence of outstanding Russian scientists Dmitri Ivanovich Mendeleyev and Vasily Vasilyevich Dokuchaev on the formation of the views of their brilliant student Vladimir Ivanovich Vernadsky, his formation as a great Russian thinker and naturalist on a planetary scale, as well as their further creative interaction.

During ten field seasons, in the format of the scientific and educational expedition “Flotilla of Floating Universities”, whose concept is based on the synthesis of science and art, many researches and educational, volunteer and publishing projects and events have been implemented in the Volga region, the Caspian region, the Don region and the Urals. The research areas of the tenth field season in 2024 (Samara–Saratov Volga region) focused on: a) stratigraphic and astrochronological analysis of sections of Upper Cretaceous and Paleogene sediments, b) studying the role of living matter in the evolution of geoecosystems with special attention to biosimilar bodies (paleosoils, hardgrounds), c) analyzing the distribution of cosmic matter in natural environments in the zone of the “Saratov meteor shower” in 1918, and d) the history of the Great academic expeditions in the 18th century (the Volga routes of I.I. Lepekhin, P.S. Pallas, and I.P. Falk). The key scientific and educational projects were a field meeting of the RAS Commission for the Study of the Heritage of Outstanding Scientists (V.I. Vernadsky section) and a field session of the Moscow Society of Naturalists (MOIP) on the Volsk–Saratov section of the expedition’s main route.

In the year of the 150^th anniversary of the famous Russian scientist Vladimir A. Barykin (1874–1939), an attempt is made to reconstruct the initial period of his scientific activity. Based on the documents from the State Archive of the Russian Federation and published sources, the pre-revolutionary stage in the life and work of V.A. Barykin is considered. The professional path of the scientist, his first scientific research, as well as participation in the Russian-Japanese and World War I are recreated. And although the flourishing of his scientific and organizational activities took place in the 1920s and 1930s, the pre-revolutionary period of his life was extremely busy with expeditions and research, becoming significant for the formation of a professional scientist and the definition of those research areas that he would develop later. The fruitful scientific activity of the scientist was interrupted in 1938, when he was arrested, and in 1939 he was shot during the repressions. Despite the rehabilitation of V.A. Barykin in 1955, no detailed publications about his life and scientific activity have appeared. This article attempts to fill in this research gap and honor the memory of the prominent Russian scientist in his jubilee year.

This article continues a series of publications devoted to the photographs from the collection made up by D.N. Anuchin at the turn of the 20th century. Nowadays the collection is stored in the MSU Earth Science Museum. Finland at the end of the 19th century is in focus this time, namely Helsingfors (Helsinki) and the Imatra Rapids. The photographs were taken by Daniel Nyblin (1856-1923), one of the most significant photographers in the history of Finland, “the father of the Finnish photographic art.” His works are considered to be of great artistic and historical value. Old photographs serve as an introduction to Finland at the end of the 19th century, including its wildlife, history and culture. Yet, Daniel Nyblin is little known in Russia. This article is to bridge the gap. The article also covers the contribution of D.N. Anuchin in the study of both Finno-Ugric peoples and Finland. This issue has not been addressed in Russian scientific literature.