All human activities affect the environment. Some are less impactful, some much, much more. According to the United Nations Environment Program (UNEP), the construction sector is responsible for up to 30% of all greenhouse gas emissions. Activities such as mining, processing, transportation, industrial operations, and the combination of chemical products result in the release of gases such as CO2, CH4, N2O, O3, halocarbons, and water vapor. When these gases are released into the atmosphere, they absorb a portion of the sun's rays and redistribute them in the form of radiation in the atmosphere, warming our planet. With a rampant amount of gas released daily, this layer thickens, which causes solar radiation to enter and and stay in the planet. Today, this 'layer' has become so thick that mankind is beginning to experience severe consequence, such as desertification, ice melting, water scarcity, and the intensification of storms, hurricanes, and floods, which has modified ecosystems and reduced biodiversity.

As architects, one of our biggest concerns should be the reduction of carbon emissions from the buildings we construct. Being able to measure, quantify, and rate this quality is a good way to start.

Wood is an extremely versatile material. It allows for the construction of robust and strong structures, while it can also be used as the raw material for delicate objects such as musical instruments. Understanding all its particularities, properties, and behavior is a journey of knowledge that could take a lifetime. Basically, wood is made up of cellulose, hemicellulose, lignin, and mineral elements, and each species has its own unique characteristics. The history of Stradivarius violins, for example, is interesting to mention: they are still worth fortunes and experts argue that luthiers have never been able to replicate their timbre on newer instruments. Researchers point out that the differentiated sound is due to the wood in the body and arm, which went through a submersion process with a mineral solution that increased the decomposition of hemicellulose. The treatment made the wood absorb less moisture, making the sound brighter and more pleasant.

This shows how complex it is to work with a living material like wood. It can swell or shrink depending on weather conditions, how the tree grew or was cut down, etc. And, varying between wet and dry states, it can end up rotting. Such factors must be understood when we work with a natural material, but it can also be a nuisance when we look for the aesthetic appearance of wood while lacking technical precision and maintenance capabilities.

Claude Monet and Vincent van Gogh used the impasto technique extensively in their paintings. Both applied thick layers of oil paint over the canvas, usually one shade at a time, and it was up to the viewer's brain to mix the colors and create the desired effects. When dry, the paint forms reliefs and textures on the canvas, evoking a sense of movement. Even without being able to touch the screen, the texture of the brushstrokes gives a three-dimensionality to the painting, something that can only be fully observed by seeing the artwork live, looking at it from more than one angle and actually experiencing it.

In his famous book “The Eyes of the Skin: Architecture and the Senses,” Juhani Pallasmaa points to "a predilection in favor of vision and in detriment of the other senses in the way architecture was conceived, taught and criticized, as well as the consequent disappearance of sensory and sensual characteristics in arts and architecture." According to the author, "an architectural work is not experienced as a series of isolated retinal images, but in its fully integrated material, corporeal, and spiritual essence."

The first Shikinen Sengu was held in the year 690, in the city of Ise, Mie Prefecture, Japan. It consists of a set of ceremonies lasting up to 8 years, beginning with the ritual of cutting down trees for the construction of the new Ise Shrine and concluding with the moving of the sacred mirror (a symbol of Amaterasu-Omikami) to the new shrine by Jingu priests. Every 20 years, a new divine palace with exactly the same dimensions as the current one is built on a lot adjacent to the main sanctuary. Shikinen Sengu is linked to the Shinto belief in the periodic death and renewal of the universe, while being a way of passing on the ancient wood construction techniques from generation to generation.

The idea of creating a building that will have an expiration date is not a common one. In fact, the useful life of a structure is often given little consideration. When demolished, where will the materials go? Will they be disposed of in landfills or could they be reused in new projects? There are certain construction methods and materials that make this process easier. Others make reuse unfeasible, due to several factors. 

It is believed that copper was the first metal to be found by men and used in the manufacture of tools and weapons. This occurred in the last period of prehistory, more than 10,000 years ago, in the so-called Metal Age, when groups, until then nomadic, started to become sedentary, developing agriculture and starting the first urban settlements. Copper has since been used in diverse ways. Used for decorative objects, jewelry, automotive parts, electrical systems, and even for dental amalgams, the material has had huge demand. In architecture, copper coatings are greatly appreciated for their aesthetics and durability. But a factor worth mentioning is that copper can be recycled infinitely, practically without losing its properties.

When water runs down the drain or we flush it down the toilet, we usually don't care where it ends up. This is because with adequate basic sanitation, wastewater shouldn't be a concern. Yet, although humanity has already taken man to space and plans to colonize Mars, it continues to fail to provide basic living conditions for a large part of its population. A comprehensive study estimates that 48% of global wastewater production is released into the environment untreated. The UN, in turn, presents a much less encouraging figure, citing that 80% of the world's sewage is released without treatment. But returning to the question of the title, there are basically two destinations for sewage if it is not being released directly into the natural environment: it can be treated locally through septic tanks, or connected to a sewage treatment plant through the sewage network, eventually returning to nature after a series of treatment processes.

Curved shapes have always sparked architects' fascination for evoking nature's beauty, fluidity, dynamism, and complexity. To replicate these shapes, however, is no easy task. From their two- or three-dimensional representation to their execution in their final materials, this represents an enormous difficulty, which requires technical expertise and a great amount of knowledge to achieve strong results. Thinking of new ways to produce organic shapes from natural materials is even more complicated.

In addition to this, working with a natural material such as wood carries its own set of peculiarities. Factors such as the species of wood, where the tree grew, what climate it faced, when it was cut, how it was sliced or dried, among many other variables, largely influence the final result. But it's hard for other materials to compare to the beauty and warmth that wooden surfaces bring to the built environment. If the appropriate processes are used, wood can be curved and remain in the desired shape - and for this, there is a number of known techniques which Australian company, Sculptform, has perfected.

Caius Sergius Orata is credited, by Vitruvius, with inventing the hypocaust. The word, from the Latin hypocaustum, in a literal translation, means access from below. The hypocaust is a raised floor system on ceramic piles where, at one end, a furnace—where firewood is burned uninterruptedly—provides heat to the underground space, which rises through walls constructed of perforated bricks. Hypocausts heated, through the floor, some of the most opulent buildings of the Roman Empire (including some residences) and, above all, the famous Public Baths.

With a similar function, but in the East, there existed the ondol. It is estimated that it was developed during the Three Kingdoms of Korea (57 BC-668 AD), but researchers point out that the solution was used long before that. The system also manipulated the flow of smoke from agungi (rudimentary wood stoves), rather than trying to use fire as a direct heat source like most heating systems. It even caught the attention of Frank Lloyd Wright, as pointed out in this article, who adapted the system to use it in heating homes in the United States and in his important Imperial Hotel in Tokyo. How do radiant floor heating systems currently work?

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The way in which a fire evolves largely depends on the materials that constitute the building, as well as how it is designed. For this reason, there exist a number of fire safety requirements in building codes that must be followed during the initial design stages, as well as the physical construction of a building. In addition to these building codes, there are other considerations that must be taken into account such as thermal comfort, acoustics, and accessibility. When specifying a material or product for part of a building, the architect or design professional must pay close attention to meeting these demands. An example of a suitable material choice is the Insulated Metal Panel (IMP), which can have superior thermal properties, various appearance possibilities and good fire resistance.

The ability to detach dividing walls from fixed structural frameworks has been one of the most notable contributions of modern architecture. The moment came when Le Corbusier's conceived the Dom-ino system, in 1914, and was brought to life in the Villa Savoye, where the structural lattice of pillars contrasted with an independent and even organic distribution of the interior partitions. The so-called open plan has been used and reinvented by architects since then for multiple scales and programs, with a flexibility that allows for the creation of large spaces with or without partitions. But one important nuisance that plagues the open plan it that is often difficult to create closed spaces when necessary, which can improve acoustic qualities and the possibility of natural light. Operable partitions serve this purpose through various mechanisms, such as sliding, folding, or wheeled panels, but they do not always facilitate the necessary conditions. Directly addressing these issues, Skyfold has developed the solution: operable walls that fold vertically and remain hidden when retracted.

If you live in an apartment, you may unintentionally know the details of your neighbor's life by overhearing conversations through your shared walls. Or you keep awake when the dog that lives in the apartment above decides to take a walk in the middle of the night. If so, you may live in an apartment with inadequate sound insulation in its walls and/or slabs. As cities grow increasingly dense and builders seek to increase their profit margins, it is not uncommon for acoustic comfort to be overlooked in many architectural projects. When the resulting noise is excessive or unwanted, it impacts the human body, the mind, and daily activities. While not all spaces need to seal all types of sound, creating spaces with an adequate degree of soundproofing improves the quality of life of all users.

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Yes, we know. We have been talking a lot about carbon. Not only here, but everywhere people seem to be discussing the greenhouse effect, carbon dioxide, fossil fuels, carbon sequestration, and several other seemingly esoteric terms that have increasingly permeated our daily lives. But why is carbon so important and why do we, as architects, architecture students, or architecture enthusiasts, have to care about something that seems so intangible?