The paper is devoted to the outstanding Russian scientist Vladimir I. Vernadsky, who is one of the founders of ecology. As a student of V.V. Dokuchaev, he developed his teacher’s ideas of a systematic dynamic approach to the study of nature and introduced a deep scientific ecological content into the concepts of the biosphere and the noösphere. V.I. Vernadsky is the founder of a complex of modern Earth sciences (geochemistry, biogeochemistry, radiology, and hydrogeology) and the creator of many scientific schools. In his scientific work, he covered many research areas, from geology to the study of the role of living matter in geochemical cycles, from soil science to the biosphere, the increasing influence of scientific thought, human activity in the biosphere and its transformation into the noösphere. The importance of agriculture in the biosphere and the noösphere is considered. The biosphere is an area of active life on Earth (troposphere, hydrosphere and part of the lithosphere), the composition, structure and energy of which are mainly due to the activity of living organisms. The noösphere is its thinking shell. Agriculture, whose most important part are grassland ecosystems, is an important component of the biosphere, being a reproducible, autotrophic sustainable resource (energetical, environmental, food and feed). In light of the pressing environmental problems facing the world, environmental education and environmental thinking are a priority for the development of the biosphere, the noösphere and agriculture.

The role of scientific mentorship is analyzed using the example of the relationship between outstanding Russian scientists N.V. Timofeyev-Ressovsky (1900–1981) and A.N. Tyuryukanov (1931–2001). The relationship between these remarkable individuals, though very different in origin, character, and habits, quickly evolved from teacher–student into genuine friendship and scientific collaboration. Two decades of fruitful interaction between them lent impetus to the development of new scientific fields, namely, radiation biogeocenology, biospheric studies (biospherology), and fundamental soil science. Their dedication to science and their attitude toward young people enabled future generations of scientists to grow and develop within the Russian school of natural science.

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.

Our previous publication in “Life on the Earth” [7] was concerned with neuroactive substances in the capacity of new-generation pollutants exemplified by neurotransmitters such as acetylcholine and biogenic amines. At low concentrations, these substances exert a growth-promoting effect on microalgae. The present work deals with the mode of action of extremely low concentrations (“trace amounts”) of neurotransmitters that comprises their antioxidant effects and the influence on the dynamics and rhythms of microalgal cultures’ development, i.e. on the succession of their age-related stages. Such neurotransmitters that can enter natural ecosystems with the wastewater of food, drug, and cosmetic industry, can be grouped into (1) substances that increase the unsaturated fatty acid (UFA) content in microalgal membranes, elevate the photosynthetic pigment concentration in the cells, and prolong the “youth” of microalgal cultures; and (2) substances that decrease the UFA content, reduce the photosynthetic pigment concentration, and, accordingly, accelerate the “aging” of microalgal cultures.

The paper is devoted to prominent figures of science and culture of the twentieth century associated with the apartment house on Zubovsky Boulevard in Moscow. The State Museum of the History of Russian Literature named after V.I. Dahl is now located in this building and an exposition concerning this topic is set up.

The paper provides a review of the existing common education in Russia in the context of V.I. Vernadsky’s ideas of the noösphere. An analysis was made of the compliance of the content of educational standards and exemplary educational programs for the common education school with V.I. Vernadsky’s main ideas of the noösphere.

The paper provides a brief analysis of the process of continuous self-organization (evolution) of living matter in the flow of Primary energy. Particular attention is paid to humans (Homo sapiens), who have taken possession of special methods of energy generation, not characteristic of any other species, namely, the transformation of the continuous flow of Primary energy. Energy generation and “scientific thought” have allowed humanity to become, according to V.I. Vernadsky, a “geological force”, to involve significant resources of the planet in the process of its own continuous self-organization and socialization of individuals. The scientific formalization of the processes used to generate energy significantly has accelerated the development of society and has actually become a prerequisite for the scientific and technological revolution. It is shown that they were Russian and, to a greater extent, Soviet scientists who have made a decisive contribution to the fundamental scientific foundations of energy generation, which determines the modern process of self-organization of mankind and people socialization. Reducing the overall efficiency of energy resources below a certain threshold is a dangerous and intractable challenge for the industrial world economies and civilization as a whole, causing conflict situations. An alternative to the apocalyptic scenario of human development, the concept of distributed energy generation based on self-regulation of energy consumption by a single individual is considered. Distributed energy generation, according to the authors, could determine novel socialization phenomena and initiate, according to V.I. Vernadsky’s teaching, the transition of the biosphere into the noösphere.

In December 2025, it will be 200 years since the beginning of the thirty-year reign of Russian Emperor Nicholas I. This period was marked by many events that had a significant impact on the historical development of the country, including the fields of science, education and culture. The article provides a description and characterization of the University Charter (1835); features of the formation and activities of university museums are examined. A comparative characterization of museums focused on natural sciences, technology, and the humanities is presented. Methods of acquiring museum collections through expedition collections, purchases, and donations are discussed. The main forms of university museum activities, namely, research, educational, and outreach, are reflected. The most significant university museums of this period are identified.

A number of interactive visitor interaction mechanisms are proposed within the format of a natural science university museum. A pilot project, tested at the Earth Science Museum of Moscow State University, provides the opportunity to immerse its visitors into the main exhibition using simple VR technologies, including 3D filming of the search and recovery of future museum objects during expeditions. The content of the new exhibition, in particular, consists of appropriately processed episodes of popular science films shot by the “Floating Universities Flotilla” expedition along the Volga, Don, and Caspian regions. In addition to the regional connection to the hall’s theme, links to specific exhibits and locations are provided; video segments are dedicated to the history of the search and selection of a particular exhibit (or their series) located in the hall, as well as the specifics of the location and research area of the expedition. Thus, visitors have the opportunity to participate in a virtual field trip, whose product, in the form of exhibits, is displayed in a specific museum hall. In addition to the permanent, stationary virtual cluster, a mobile version of the project presentation has been developed, which was tested at the 2024 All-Russian Science Festival at Moscow State University. To this end, the Earth Science Museum’s portable pavilion was equipped with virtual glasses, which allow festival visitors to “go on an expedition” along the routes of the “Floating Universities Flotilla,” “visit” the find sites, participate in the discovery and recovery process, and load them onto a research vessel. The virtual project’s creators—winners of the All-Russian "Youth and Museum" competition—served as guides and companions on the virtual field route. In 2025, as part of the “Floating Universities Flotilla” scientific and educational expedition, 360° video production was conducted along a predetermined route plan through natural sites to select potential museum exhibits.

The article analyzes a collection of minerals and rocks compiled in 1911 in Yekaterinburg city in the mineralogical workshop of the Commission for the Dissemination of Natural Science Knowledge of the Ural Society of Natural Science Lovers, stored in the Museum of Scientific Heritage (Ulan-Ude city). It includes both material (stone samples) and written sources (handwritten and printed). It contains information on the history of science, education and museum work in our country in the first decades of the 20th century. The collection was compiled according to J.D. Dana’s mineralogical systematics, typical for museum practice of that period. Its geography covers mainly the Southern Urals, but individual samples were collected in other regions of the Russian Empire.
The collection box contains its catalog, as well as scraps of the newspaper “Russkoye Slovo” and a fragment of a note of 1911, confirming the dating of the collection. The autograph on the catalogue belongs to Nadezhda O. Sharakshinova, a famous folklorist, through whose family the collection came to Buryatia. A second autograph was presumably left by the Yekaterinburg merchant Pyotr I. Yarinsky (~1868–?).
The educational mineral collections of the Ural Society of Natural Science Lovers were in demand by educational institutions across the country in the first decades of the 20th century. This activity is presented in sufficient detail in archival documents and research works. However, very few such educational aids have survived in museum collections. For the Museum of Scientific Heritage, the collection is an opportunity to expand the mineral diversity and geography of its collection; a document that stands out for its historical, scientific and memorial value.

The constantly extending list of humankind-produced environmentally toxic compounds currently includes pharmacological preparations. Among them, of potential relevance are neurotransmitters including such biogenic amines as norepinephrine, dopamine, serotonin, and histamine, as well as acetylcholine. These neurotransmitters were tested in the present work using such model organisms as the green microalgae Chlorella vulgaris Beijer, Scenedesmus quadricauda (Turp.) Breb. К-1149, and Haematococcus lacustris (= pluvialis) strains IPPAS H-239 and BM-1, as well as the cyanobacterium Limnospira platensis IPPAS B-256. It was established that all tested neurotransmitters significantly stimulate the growth of the cultures of microalgae at sufficiently low (micromolar) concentrations. In light of the results of this work, uncontrollable microalgal growth seems to be possible under the influence of trace amounts of neurotransmitters in natural and artificial water bodies, which might cause their eutrophication. All tested substances influenced the photosynthetic pigment content at micromolar (or submicromolar) concentrations, acetylcholine being a quasi-universal promoter of their biosynthesis that presumably stimulates the photosynthetic activity of the microalgae. The effects of the other tested substances varied depending on the microalgal species involved but predominantly resulted in promoting photosynthetic pigment biosynthesis. A biotechnological project aimed at stimulating the microalgal biomass yield by supplementing microalgal cultures with neurotransmitters seems to hold promise for producing drugs, food additives, or biofuel.

A new multi-level model for calculating the carbon footprint of agroecosystem products is proposed. The concept of “final carbon footprint” is introduced, which includes both direct CO₂ emissions from the operation of tractors, combines, oxidation of soil humus, CO₂-eq. during the transformation of nitrogen fertilizers in the soil, and indirect CO₂ emissions – carbon dioxide release into the atmosphere during the production of tractors, combines, tillage equipment, mineral fertilizers etc.
Based on the results of field experiments on gray forest soils in the Southern Moscow region, it is shown that when applying average doses of mineral fertilizers to field crops, the indirect CO₂ emissions are comparable to the CO₂ input from organic fuel oxidation when machinery is operating in the field. At higher doses of fertilizers, the indirect emissions are significantly greater than the CO₂ emissions from machinery operation. In order of increasing CO₂ emissions per 1 ha of sowing, crops on gray forest soils are arranged as follows: corn for silage > barley > winter wheat > clover.
Clover is a carbon-negative crop (−1.7 t/ha CO₂), i.e., CO₂ sequestration in the soil exceeds all CO₂ emissions from hay crop production. The final carbon footprint for grain crops, calculated using the standard method, was as follows: for winter wheat (with a fertilizer dose of N40P40K40) – 116 kg CO₂ per 1 centner of grain, for barley (with a dose of N60P40K40) – 104 kg CO₂ per 1 centner of grain. The final carbon footprint, taking into account the aftereffects of predecessors, was: for winter wheat (predecessor: two-year clover) – 48 kg CO₂ per 1 centner of grain; for barley (predecessor: silage corn) – 113 kg CO₂ per 1 centner of grain.

Of fundamental and priority applied importance are new scientific and practical results obtained at the V.R. Williams Federal Research Center of Forage Production & Agroecology for the study of natural food resources in Russia, based on modern knowledge, materials and technologies. For all 11 natural and economic regions of Russia (Northern, Northwestern, Volga-Vyatka, Central, Central Chernozem, Volga, North Caucasian, Ural, West Siberian, East Siberian, and Far Eastern), agro-landscape and ecological zoning of land and forage ecosystems has been developed. The following materials were obtained for each area: a map M 1:2,500,000, a legend, a database on land, a database on forage lands, a database on negative processes, a classification of forage lands, a classification of deer pastures (where available), recommendations for forage production and environmental management in agriculture. The research used the Map of the Soil and Ecological Zoning of Russia from the Faculty of Soil Science of Lomonosov Moscow State University, as well as other numerous sources. When creating and developing new highly productive and resistant plant varieties and nature-like technologies based on zoning, science and industry will be able to use local natural and climatic resources with the greatest efficiency and minimize the development of negative processes.

May of 2025 marks the 180th anniversary of the Siberian researcher, geologist and geo­grapher Jan Stanislaw Franciszek Czerski (1845–1892). However, he worked not only in the field of geology and geography. An important part in Czerski’s researches was works on paleontology and zoology; he is also known as an archaeologist. In 1871–1879, Czerski worked at the museum of the Siberian (Eastern Siberian) Branch of the Imperial Russian Geographical Society in Irkutsk. He studied, catalogued and significantly expanded the zoological and paleontological collections of the museum. The article provides brief information from Jan Czerski’s life. His main works on the study of modern and quaternary Siberian mammals, which laid the foundation for further research in this area, are analyzed. Czerski’s paleontological research ranks him among the outstanding palaeontologists of the second half of the 19th century.

The results of our research conducted at the junction of geology, speleology and archeology are presented. Every cave is considered as an integral part of the enclosing geological system. Representative examples show the nature of the interrelationships of caves with structures of the continental crust of Eurasia, Africa and North America. The research was performed within the framework of the pulsationally expanding Earth model. According to this model, at the Pleistocene–Holocene turn, our planet was bombarded by a stream of asteroids, after which it switched to a pulsed compression mode, with a sharp activation of orogeny at the Holocene beginning. At that time, caves with their Paleolithic–Neolithic cultural layers were deformed. Their deformations are considered as Holocene activation indicators.

The article examines the ethnographic collection of the Chaunsky Local History Museum, located in the town of Pevek, Chukotka autonomous district. The author, relying on the methodology of the Russian Ethnographic Museum and scientific literature, provides a classification of objects of applied art, everyday life and ethnography of northern peoples, gives a brief description of their things, describes the technologies of their manufacture. The formation of the ethnographic collection began with the receipt of items from a folk museum. The ethnographic collection of the museum consists of unique items of traditional Chukchi culture in the amount of 456 storage units. The geography of the places of receiving ethnographic items is concentrated in the vicinity of the Chaunsky district. Some ethnographic topics are represented by decorative and applied items and works of bone carving art. In general, the collection reflects the culture of primary production of the Chukchi, their livelihood methods, and reveals socio-normative relations of the northern peoples. However, the collection does not have enough items for a complete reconstruction of ethnographic topics; no traditional culture of the ethnic groups living in the region is represented; no history of collection is presented; and the names of the collectors require clarification. Based on the results of the study, the composition of the collection is analyzed, problematic issues of acquisition and attribution are revealed, and recommendations for promising areas of work of the museum with ethnographic items are given.

Scientific museums in the Russian Federation, in accordance with current legislation, are switching to the collection management standard developed for the Ministry of Culture. The absolute priority of preserving museum items is a serious obstacle to the implementation of the standard, which greatly limits the possibility of their scientific examination, which is contrary to the interests of scientists. The examination of museum items, like any other use, including exhibiting, inevitably has a negative impact on their preservation. At the same time, the examination serves to increase the value of any item, its relevance for modern culture.

The methodology of scientists’ work with collections began to form in the period of antiquity. In our country, tools for processing, describing, systematizing and storing collections were formed in the 18th–19th centuries, namely in scientific museums, museums of the Academy of Sciences. Museums in the Russian Empire were part of the scientific organization system. However, after the Soviet reforms in the 1930s, museum and scientific activities were radically separated. As a result, the research function of museums under the Ministry of Culture is poorly implemented, which is enshrined in current regulatory documents.

Scientific museums, due to their subordination to the Ministry of Science and Higher Education, have scientific research as their target indicators, which determines their priority over traditional museum indicators (storage and replenishment of funds, exhibits and attracting visitors). Attempts to combine the interests of examining and preserving collections have been discussed for several decades. This problem is especially evident in relation to natural science collections and museums, most of which are under the scientific department. Its solution requires the development of a methodology for handling museum collections and amendments to regulatory documentation.

The article discusses the applicability of the Industry 4.0 concept to agriculture in general and fertilizer usage in particular. The possibilities of integrating IT and communication technologies with agricultural production are shown, when “smart” network systems combining various types of data from several sources help to increase productivity and efficiency. Examples are given of increasing the efficiency of fertilizer usage, primarily nitrogen ones, using electronic twins of agronomic and agrochemical technologies to reduce their environmental impacts. It is noted that the introduction of Industry 4.0 technologies increases the efficiency of precision farming as a combination of the best practices of sustainable agriculture (BPSA). Examples of assessing the life cycle of fertilizers considering the risk of eutrophication of natural waters are given. This allows achieving economic and environmental optimization of agriculture.

Brief information about the author’s course dedicated to the world of gemstones is provided. Data of first-order gemstones (diamond, emerald, sapphire, ruby, alexandrite and pearl) are given. The questions of the discovery history of these gemstones, their classification, properties, formation in nature, methods of synthesis, methods of refining, as well as estimation systems are considered. Due to a large amount of information, the course is divided into four sections and clearly structured in each of them. This helps to make it easier to perceive. Online course design allows the lecturer to effectively interact with the audience.

The key principle of the Arctic development should be nature-saving nature management. The agro-landscape-ecological zoning of the Far North fodder ecosystems developed at the V.R. Williams Federal Research Centre for Forage Production and Agroecology is aimed at this very goal. About 90 % of Murmansk District is occupied by reindeer pastures, in some places disturbed as a result of their irrational use by reindeer herders, mining, construction, and transport; the ecological state of the territory is tense. In Yamal District, reindeer pastures occupy 65 % of the area; the ecological state of the ecosystems is tense or even critical in some places. The area of lichen tundras has decreased by 3,5–4 times, total fodder reserves in lichen-moss tundras, in those areas where they are still preserved, have decreased by 3–10 times. The total reserves of green grass fodder and shrubs has decreased by 1.5–2 and 2–8 times, respectively. Desertification of highlands (bare sands occupied about 6 %) and waterlogging of lowland areas is going on. Technogenic impact on tundra ecosystems disturbs soil and vegetation cover, hydrological regime. Waterlogging of lowlands due to thermoerosion is starting. It is necessary to find compromises between economy, ecology, social and national interests.

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.

The article examines the problem of energy efficiency in the chain from the production of fertilizers to their logistics, application, and waste production and disposal based on the huge amount of data accumulated in recent years on greenhouse gas (GHG) emissions (primarily CO₂ and methane). Carbon dioxide emissions are shown to occur primarily from fuel combustion, as well as from the use of methane and CO₂ as precursors for nitrogen fertilizers. GHG emissions can be considered as a measure of energy efficiency when assessing the life cycle of mineral fertilizers. Relevant examples are given.

Maria P. Nagibina (née Tsybulskaya) (1878–1943) was a Russian botanist, teacher, local historian, public figure, science organizer and popularizer. She was one of the first women in Russia who received higher education. She was the organizer of the first in our country scientific biological station of MSNS (Moscow Society of Natural Scientists) (1919–1925, v. Staroe Pershino). Being an employee of the Botanical Garden of Moscow University (1904–1917 and 1926–1943), she was engaged in plant growing, selection of domestic varieties of ornamental plants; she organized their collections and exhibitions.

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.

The article turns to one of the most interesting pages in the 101-year history of the sanatorium “Uzkoe” (Federal Research and Clinical Center of Reanimatology and Rehabilitation) through the prism of the life and creative activity of the outstanding Altai artist Grigory Ivanovich Choros-Gurkin (1870–1937). His “Altai” (or «Lake of mountain spirits») painting created in 1916 for the honorary Academician Nikolai Alexandrovich Morozov (1854–1946) are one of the brightest pearls of the art collection of the sanatorium “Uzkoe”. Both behind the plot of the painting, where the ancient Oirot legend is intertwined with the comprehension of the secrets of science, and behind the process of creation and the further fate of the canvas itself, an amazing story is hidden which to this day, revealing new facets, disturbs the inquisitive mind of researchers. The main role in this story will belong to “reason and solid analysis”.

The prevalence of the ecological approach over the historical and partly natural-historical ones in the exposition and exhibition activities of museums may have negative consequences in the perception of the population. In domestic museums, the theme of the history of environmental protection, public environmental organizations, especially youth ones, is poorly represented. Among them are nature protection squads (NPS) and their whole movement, which was most active in the 1970–1980s. Most of their archives have been lost. Therefore, the exhibition at the Voronezh Regional Local History Museum “Youth on guard of nature”, dedicated to the 50^th anniversary of NPS in Voronezh State University, can be considered unique.

From March 24 to June 5, 2023, the Voronezh Regional Local History Museum for the first time among domestic museums demonstrated an exhibition dedicated to the activities of a student public environmental organization in the 1970s–1990s. The article substantiates the uniqueness of this exhibition and the relevance of such museum expositions. It tells about its multitasking and creative solution of a number of issues of the exposition. Questions are raised about the proportionality between the ecological and historical approaches (including the history of ecological aspects of culture) in museum expositions.

A popular science film “Brotherhood of Scientific Creativity. Floating University named after Vladimir Vernadsky” was shot to the 160^th anniversary of the birth of Academician V.I. Vernadsky. Work on the film was carried out during 2022–2023 as part of the activities of the scientific and educational expedition «Floating Universities Flotilla» (the field work regions being the Middle and Lower Volga river, Don river, Caspian sea). It includes the original projects “Academician Vernadsky’s Floating University” and “Floating mobile-network museum center”. The concept of the project basically provides for interdisciplinary research on a wide range of problems of the interaction of geospheres and the evolution of geoecosystems, which is being implemented by creative teams of scientists from various fields and students with the active involvement of the local population in interactive museum practices. According to the main message of the film, it is in such an environment of “scientific creativity”, in the format of field natural sciences, that the development of the ideological heritage of V.I. Vernadsky on the principles of the “Priyutinsky Brotherhood” and maturation of the “new Vernadskies” from novice researchers. The original system of scenario and producer’s decisions included the contrast of images «academician–student», a series of episodes of actual field research (the study of geological sections, the phenomenon of lithophagy, natural and anthropogenic objects) with the implicit inclusion of the “young Vernadsky” in the process (the character is an actor) and subsequent the culminating meeting of the “two Vernadskies” (montage) against the background of the Volga river – a symbolic handover of the baton of “scientific creativity” to a new generation.

The fulfillment of the tasks set by the 1949-1965 State Plan for Nature Transformation became the work of the whole country. Its goal was the development of sustainable agriculture in the steppe and forest–steppe regions of the European part of the USSR. It is an example of a responsible state attitude to the use and preservation of our lands and soil fertility. The State Plan for nature transformation was bases on the integrated reclamation of agricultural landscapes using a scientific systematic approach to the objects of research and management. State authorities, Academy of Sciences of the USSR, scientists from dozens of universities and research institutes, ministries, 80 thousand collective farms, 2 thousand state farms, and 3 thousand machine tractor stations took an active part in the organization and large-scale implementation of protective afforestation and the development of a grass-field farming system. The plan provided for the creation of 8 large state forest strips with a total length of 5,320 km, located along floodplains and watersheds of the Volga, Dnieper, Don, Ural, Seversky Donets rivers etc.; protective forest plantations in the fields of collective farms and state farms; consolidation and afforestation of sands on an area of 322 thousand ha; the introduction and development of a system of field and fodder grass-field crop rotations; and the creation of over 44 thousand ponds and reservoirs. Over the 5 years of the plan's implementation, more than 2.3 million ha of forest plantations have been planted in the country; an ecological framework of agricultural landscapes has been created on agricultural lands; over 13 thousand ponds and reservoirs have been created. The prototype of the scientific basis of the State Plan for Nature Transformation was the works by V. V. Dokuchaev, V. R. Williams and V. I. Vernadsky on the conservation of land and soil fertility. The implementation of the plan stopped in 1953 and the development of virgin and fallow lands began. Currently, the state, scientists, society, regions and agricultural producers need combining their efforts in the rational usage of natural resources, the preservation of agricultural land and soil fertility for the present and future generations.

The article is devoted to children’s pencil drawings, which are stored in the museum of the village of Markovo (Chukotka Peninsula). In the 1890s, these pictures were drawn by the pupils of the church parish school of this village and conveyed some events took place in the life of the rural inhabitants. The children took part in the traditional household and reflected what they saw in their drawings. The drawings did not become museum documents at once; they were kept in private archives before. In the 1990s, the drawings were transferred to the rural museum. Each one was named according to the depicted subject. For example, “Training the reindeer in sledge driving and riding”, “Reindeer racing", “The end of migration". Eleven drawings are preserved. The aim of the paper is to analyze the drawings and explain the ethnographic information therein. The author systematized the drawings by themes: “The traditional method of the reindeer herder’s economy”, “The traditional hunting for wild deer”. In the drawings, each character performs some kind of action. Men are depicted in the process of controlling a deer, firing a gun, driving a boat, or while hunting. Women are depicted in their traditional clothes – fur overalls. In the drawings, women carry water in buckets, control a deer and walk with children. One woman is depicted riding a deer as a racer. Children are drawn shorter than adults. The pupils tried to depict features of the structure of animals. In the drawings, the raindeer have branchy antlers and thick wool under their necks. Details of the images reflect ethnographic information about the methods of managing domestic raindeer, traditional transport and clothing. The interaction among different cultures is depicted in the pictures as well. Today, these drawings are a unique heritage because they convey historical events and ethnographic information.

The article draws attention to the relevance of studying the history of museological thought in Russia. The author notes the prospects of the biographical method of research, which makes it possible to trace the continuity of views, the motives for making certain decisions, and to build priorities more precisely. The ideas expressed in the recently published book "From the history of museological thought in Russia: the 20th century" are being developed. The paper analyses the biographies, contributions to the museum theory, and features of the creative path of several well-known domestic museum specialists such as M. Novorussky, N. Trotskaya, M. Farmakovsky, and L. Rakov. A more accurate representation of their role in the formation of museological knowledge, as well as noting common features of museologists of the 20th century, can be made possible by new publi-cations of sources appeared in the 2000s, mostly of personal origin.

The article analyzes geotourism perspectives based on natural history museums. Significant trends for the integrated development of geotourism and natural history museums are formulated. These trends allow revealing prospective views on the tourist potential of the territory. In order to clarify the geotourism development potential at the place of the Earth’s geochronological key stages, several museums were analyzed in conjunction with the geotoponyms of geological systems in the world. A geoheritage interpretation model, correlating ex situ museums and in situ objects, is developed. It includes territorial aspects and substantive formats of interpretation, depending on the target audience and the format of interaction with geoheritage. Geoheritage evaluation includes three groups of criteria (scientific, educational and geotourism), each being estimated to summarize approaches for the museum representation. The criteria are ranged according to the comparison purpose of in situ and ex situ forms. The variety of geoheritage interpretation forms allows suggesting recommendations for geotourism development. One symbolically significant way is the museumification of in situ and ex situ objects to correlate the museum network and the network of protected areas as a complex tourist infrastructure. For the Perm Region as a historically significant place of the Permian geological system discovery, the priority is to develop a complex plan to integrate the possibilities of geoheritage representation through museum forms and in the natural environment. In view of the objective scientific data, the Perm Region has no GSSP of the Permian system; therefore the role of the “symbolic stratotype” should have the Permian Period Museum as the basic object of the geotourism infrastructure and the starting point of tourist routes. The supportive role in the Permian geoheritage preservation and representation belongs to the network of municipal and university museums.

The reason for writing this article was the off-site meeting of the museology section of the Moscow Society of Naturalists on December 22, 2022, to get acquainted with the exhibition «Past and Present of the Fauna of the Vladimir Region» permanently operating in the House of Culture in Strunino. The initial task of the paper was to analyze the situation with the moving to a new location of the well-known scientific, educational and entertainment museum «Ice Age» in Moscow. The museum was established in 2004 on the basis of the richest paleontological specimens collected by F.K. Shidlovsky National Alliance during multiple expeditions to the northeast of Yakutia, Chukotka, Altai and the Southern Urals. In 2004–2014, the museum functioned as a scientific and exposition center in pavilion No. 71 at the All-Russian Exhibition Center, which not only popularized knowledge about the animals of the Ice Age, but also provided unique exhibits for research by paleontologists. After several years of searching, the creator of the museum finally found a suitable place to accommodate large exhibits. It was necessary to decide how, by continuing the comprehensive educational and research activities, to ensure a wide attendance of the museum in a place remote from Moscow. Thorough studying of the information showed how much the task is broader and more serious than it seemed at first glance. The activity of an outstanding energetic person, devoted to a significant social goal, turned out to be connected with roots deeply rooted in the historical past of the country. Support for a specific undertaking has become important for the implementation of a comprehensive project of the museum, cultural, scientific and educational nature, up to the prospects for the development of the region. And at the same time, the identified problem can be considered as an example of a person’s involvement in the history of the country and responsibility for his/her actions.