Zoologists have hypothesized that male brown bears intentionally distort their perceived size among females and rivals. These predators traditionally use both chemical and visual signs left on trees at the highest reachable point to communicate their characteristics.
Brown bears are solitary animals and communicate with conspecifics through visual and chemical markers. Bears often stand on their hind legs and rub against trunks, leaving a secretion on the bark containing substances from sebaceous and possibly sweat glands. This scent conveys information about sex, age, and unique individual identification. The height at which the chemical marker is placed can also indicate the bear's size.
Furthermore, during mating season, adult males scrape the bark at the maximum height they can reach while standing on their hind legs. These visual signs serve to inform potential mates and competitors about the individual's magnitude.
A team of zoologists led by Vincenzo Penteariani from the National Museum of Natural Sciences in Madrid began a detailed study of the visual communication of brown bears inhabiting the Cantabrian Mountains in northwestern Spain. Previously, researchers found a mark on a tree at a height of about three meters that was unreachable for local individuals, even when standing on their hind legs. The discovery of a broken branch near this mark led scientists to suggest that a male climbed the tree to leave a trace higher than his usual range, thereby attempting to exaggerate his stature before females and competitors.
To test this theory, Penteariani and his colleagues organized a field experiment in the Cantabrian Mountains. They installed stable structures—piles of stones or wooden platforms about 80 centimeters high—at 13 trees and one pole where bears had previously left marks. Automatic cameras were placed nearby. Data collection took place from March 15 to July 15 between 2021 and 2024. During this period, the cameras recorded 164 different bears, although not all of them interacted with the studied objects.
Of the total animals recorded, at least 62.8 percent were adult males, and 11.6 percent were adult females. Young animals were also captured on camera. Researchers managed to record 149 instances of marking. In most cases, the marks were placed at a height corresponding to the animal's height. However, seven males—four adults and three juveniles—left marks higher than their height allowed, using platforms or climbing the tree/pole. This behavior was observed on the pole (six individuals) and one of the trees (one individual).
When calculating across all recorded bears, the exaggeration of height amounted to only 4.3 percent. Nevertheless, when considering only males observed at a specific object during the mating season, this figure increases to 19.2 percent. According to Penteariani and his team, bears climb higher to appear larger. This theory is supported by the fact that among such individuals, there was a disproportionately high number of young and smaller ones who benefit from looking bigger to avoid conflicts with larger males and attract female attention. Large males and females have no need for such deception, and it is harder for the latter to climb elevated positions.
However, the authors admit that final confirmation of the deception hypothesis is not yet possible because they did not study the reaction of other bears to marks placed too high. There is also a possibility that males leave marks higher not for deception, but simply for better visibility and smell.
Previously, zoologists suggested that rubbing against tree trunks serves not only for marking but also for protection against parasites due to the scent of resin. Experiments confirmed that ticks parasitizing these predators react to the smell of turpentine and beech tar.
In the center of Tashkent, between the Yunus Rajabi and Beshagach mahallas, there is an embankment along the Burdshar Canal that has significant potential to attract residents. However, due to a destroyed descent, lack of lighting, benches, and regular cleaning, this area has turned into an underused and abandoned place.
Although this area is in close proximity to busy city routes, most passersby ignore the canal itself. The path along Burdshar offers coolness, shade from mature trees, and silence broken only by the sound of water, making it a natural place for walks. Nevertheless, the condition of access to the water, including destroyed steps and the absence of basic landscaping elements, prevents its full use.
Currently, the embankment is losing its potential due to a lack of lighting, bins, and benches. Developing this area does not require major construction; it is enough to ensure convenient access, safety, and basic maintenance. Restoring the descent, installing lighting, and placing resting elements can transform the forgotten canal section into a full-fledged urban embankment.
Special attention should be paid to the lighting, which must be intelligently designed. It is recommended to use autonomous LED lamps with solar panels and batteries that accumulate energy during the day and provide light at night. In shaded areas under trees, hybrid systems can be used to increase reliability and reduce operating costs.
Benches play a key role because they encourage people to slow down and stay in the space, turning a passage into a place of dwelling. Furthermore, the presence of regularly serviced bins is critical for maintaining cleanliness, which is a matter of both infrastructure and culture.
The joint implementation of these elements helps change the logic of territory use, attracting runners, cyclists, parents, and the elderly. The principle of 'eyes on the street' by Jane Jacobs is also applicable: the more people use public space, the safer it is due to natural surveillance.
A study conducted by Podrobno.uz showed that even using budget solutions, improving this area will cost approximately 250 million soms. This amount covers cleaning, path repair, installation of eight lights, five benches, and five bins, as well as minimal landscaping of the adjacent area.
For comparison, the president stated that in 2026, about 5.5 billion soms is allocated on average for infrastructure development in each mahalla. Thus, the embankment can be brought into order using less than 5% of this budget. The result of such an investment is transforming a neglected concrete path into a full-fledged urban route for recreation and sports.
State environmental expertise is conducted to determine whether planned, implemented, or carried out economic and other activities comply with environmental requirements, as well as to establish the possibility or impossibility of implementing the subject of state environmental expertise.
Due to economic development and an increase in the number of projects, as well as the growth of large industrial, infrastructure, and strategically important projects, there has arisen a need to introduce a stronger, clearer, and more modern environmental assessment system.
In the resolution of the Cabinet of Ministers dated May 11 of this year, a number of tasks were defined aimed at introducing modern mechanisms for preventing and reducing the negative impact of economic and industrial activities on the environment and public health, according to the decree 'On measures to implement new environmental impact assessment mechanisms.'
Durbek Farmonov, a specialist from the Center for State Environmental Expertise, spoke about the necessity of introducing a stronger, clearer, and more modern environmental assessment system, discussing the essence of current laws.
Contemporary residential architecture faces pressing issues of global housing shortages and growing urban populations. In practice, architects constantly experiment with new forms of collective housing, striving to create spaces for personal, family, and community development. The six unfinished projects presented here demonstrate various aspects of solving the problem of building density: relationships with existing and planned nature, availability of urban or suburban plots, creation of additional intermediate spaces that support collective life and mitigate the feeling of high density, as well as the possibility of reproducing densification models and connection to the host area.
In this selection, ArchDaily readers are presented with housing concepts from Costa Rica, the USA, Ukraine, Iran, Uzbekistan, and a modular prototype without a fixed location. Analyzing the six unfinished projects, one can find common difficulties in creating a vibrant atmosphere and neighborhood environment, as well as unique responses to climatic conditions, interaction with nature, and the distribution of private and common areas. Three projects were designed for urban densification to maximize the use of available land to integrate more people into the existing urban network. Given the lack of land, one of the proposed ideas expands possibilities through a floating residential complex project, while two other options opt for suburban collective housing, emphasizing a direct connection with surrounding vegetation.
Below are idealized housing solutions developed by six ArchDaily readers, which were submitted as images and brief descriptions.
The architectural firm Carazo Arquitectura presented the LTR1 project—a multifunctional residential complex spanning 60,265 m² in Nuevo Cuscatlan, in the San Salvador metropolitan area, El Salvador. The complex integrates over 400 residential units, a commercial zone, and a protected forest within a single hybrid building. The project implements the firm's research line known as Tropical Vertical Urbanism, which studies how dense vertical construction in tropical cities can integrate housing, commerce, ecology, and social life into a single interconnected system.
In the rapidly growing city of Austin, rising property prices and constant urban expansion have exacerbated the housing crisis. Many people are forced to move to remote suburbs with limited public transport. The city faces a deficit of over 211,000 social housing units, and regulatory restrictions and high land costs hinder traditional expansion. This situation demands compact and highly efficient housing models that maximize spatial efficiency while minimizing carbon footprint and construction impact. In this context, communities of floating microhomes are proposed as a response to Austin's housing problems, as well as as a compact and reproducible urban prototype for coastal cities worldwide. By transforming underutilized waterways into habitable urban infrastructure, the project introduces a model of efficient microhousing that is affordable and adaptable. Factory planning minimizes material use and costs, while layouts optimize every square meter for integrating living, working, and leisure functions.
The concept was built around preserving the pine forest and natural thermal waters, where the idea of daily rejuvenation is integrated into the lifestyle itself. The project is conceived for people who value the balance between activity and tranquility, working in a dynamic environment but needing regular physical and mental restoration without having to leave the city. The central element is the fusion of an urban quarter type (kvartal), suburban life, and a resort: placement within a closed quarter forms a protected inner forest core, while the architecture develops under the tree canopy, not competing with nature. This idea is supported by the Japanese philosophy of onsen—understood as a ritual of silence, water, and balance—expressed in the spa and thermal bath infrastructure and the integration of water into daily life.
Among the architectural features of arid and hot regions of Iran, such as Kashan, are Sabats—arched covered walkways built along long paths to protect pedestrians from direct solar radiation. Beyond their ecological function, Sabats fostered social cohesion by providing comfortable places for gatherings and neighborly interaction. The Sabat project is located in one of Kashan's most historic urban networks. The plot was formed by combining several small parcels, allowing for more floors than neighboring lots. This vertical imbalance became the main design challenge, leading to the development of two different volumetric strategies to harmonize the building with the surrounding urban context.
The SYS modular building is a prototype ordered by Siam Yamato Steel co.,ltd. and designed by the Office AT studio. The project is based on a modular construction system where building components are prefabricated in a factory and quickly assembled on site, ensuring efficiency in both schedule and construction quality. The concept maximizes the potential of modular construction. Each module is designed with independent walls (no shared walls), which enhances natural ventilation and improves internal comfort. The system also offers great flexibility, allowing the building configuration to be easily adapted to plots of different sizes and conditions. The project intentionally remains simple, consisting of only two unit types: Type 1 (ground floor) and Type 2 (duplex). These modules are organized in an alternating and articulated pattern, creating gaps between them that simultaneously serve as terraces and ensure natural light and ventilation enter the building. Furthermore, this arrangement increases the privacy of each unit.
In a historic Uzbek city on the Silk Road, we reinterpreted high-rise buildings into the form of SUPERMAHALLA—a low-rise complex inspired by traditional mahallas. Four blocks define private courtyards for gatherings, mimicking a patchwork quilt. Seismic joints guide pedestrian routes, and mountain contours are used to maximize apartment placement. White facades contrast with terracotta 'windows', paying homage to the tradition of handmade ceramics, blending historical heritage with modern European style. Underground parking ensures the safety of terraces and children's areas. Comfort amidst urbanization: rooted in place, designed for people.
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