Landscape-bionomic zoning reveals the effect of hydrological and geomorphological links of the physical-geographical process on the bionomic differentiation of the Barents Sea floor. The polar front separates the Arctic water masses and communities from the subarctic ones; under the influence of warm Atlantic Current branches, extrazonal boreal biomes are formed. The geomorphological structure represents the lithogenic basis that determines the formation of bionomic types of the Barents Sea floor. It was established that each geomorphological region corresponds to one macrozoobenthos group.

For forty years, serpentine-based tribological compounds have been successfully used in sea and river vessels, on railroads, in agricultural machinery, in a wide range of industrial equipment, as well as in passenger and freight road transport. The article presents only some practical results of using serpentinebased friction geomodifi s in technical equipment that can be used in the development of the Arctic, as well as in ships on the Northern Sea Route.

New data on the lithology of surface sediments in the coastal areas of the East-Siberian Sea (between Wrangel and Novaya Sibir islands), obtained within the framework of the state geological mapping at the scale of 1:1M, was used to clarify the distribution of granulometric types, mineral composition, and geochemistry of surface seabed sediments in this area. The main sources of sedimentary material and sedimentation patterns of the coastal part of the Western and Eastern sectors of the East-Siberian Sea were considered. An important factor determining sediment redistribution along the seabed, violating the regularities of mechanical differentiation of matter, consists in the plowing of the seabed surface by drifting ice to depths of 50 m.

This study aimed to assess the individual risks of immediate (reflex) effects of inhalation exposure to nitrogen oxide and nitrogen and sulfur dioxides among the population of the Murmansk Oblast. The study was conducted in seven cities and covered the period of October, November, and December 2021. The considered chemical compounds belong to the third hazard class. Calculations were carried out using mathematical models, linking the penetration values with the actual concentrations of pollutants in the atmospheric air and their maximum permissible one-time concentrations. A table of normal probability distribution was used to convert probits into risks. The calculated risk values were compared with the acceptable values of the maximum risks of immediate action. The acceptable value of nitrogen oxide and dioxide (0.02–0.05) was found to be exceeded in the city of Kovdor in November and December. In the city of Monchegorsk, the acceptable value of sulfur dioxide was exceeded in November.

The present work aims to study lipid balance, specifi markers of atherosclerosis, morphological changes in the main arteries, as well as paired indicators, in the formation of the atherosclerotic process in some non-comorbid pathological forms (painful/silent episodes of angina pectoris) of chronic coronary artery disease occurring with affective disorders in shipboard personnel serving in the Far North. The study revealed a higher incidence of structural changes in the medial sheath of both common carotid arteries in silent angina pectoris, which are manifested in vascular bed remodeling, formation of atherosclerotic plaques, and stenotic atherosclerosis. In addition, an increase in proatherogenic activity, suppression of antiatherogenic parameters, as well as more significant changes in the paired indicators of the atherosclerotic process were observed in such patients. The exacerbation of the main pathological process in chronic coronary artery disease can be attributed to the existing polymorbidity.

Climate-driven changes in weather conditions have a widespread impact on bird migration timing and routes. The present study examines the annual cycle and migrations of the Arctic Tern (Sterna paradisaea), one 

of the dominant Arctic species. The long-term data on the population dynamics of the Arctic Tern are summarized. Temperature and relative air humidity are shown to be the decisive factors in the migration of this species under changing weather conditions. The obtained results can provide a basis for biological monitoring.

Prospects for applying cross-laminated timber (CLT) in the construction of buildings for various functional purposes in the Arctic zone of the Russian Federation are investigated. A CLT manufacturing technology is considered. Examples of CLT use in the construction of buildings for various functional purposes in the Russian and international practice are provided. The technical characteristics of CLT and its advantages when used for construction in the Russian Arctic are analyzed

This work considers global temperature trends and their prediction in the world and polar regions in particular. Global warming covered the period from the 17th till the end of 20th centuries. The mechanisms of this process remain obscure; however, it is clear that abiotic factors controlling climate make the most significant contribution. Starting from 1997, the global fall of temperature has been observed, with instability becoming the major trend. Climate depends on the interaction of abiotic (hydrosphere, lithosphere, atmosphere), biotic (biosphere), and social (noosphere) spheres of the Earth. All these spheres are characterized by a highly stable system. Human activity has no essential impact on global climatic processes. The consequences of contemporary temperature changes, which are to manifest themselves in the coming years, will not be extreme for all mankind. However, they may be of particular importance for the polar regions. The temperature in the Arctic will increase, while the climate of the Antarctic will become colder. The global average temperature will decrease and become more variable. Modern science is capable of predicting climate change. Serious climate research should be free from political and economic pressures.