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Most modern buildings are built using only a few materials. Concrete, metal, and wood are most commonly used. Thse materials are generally cheap and durable. However, environmental issues have become a global topic. As a result, more builders have become concerned about the environmental impact of modern building materials. Making concrete and metals produces a large amount of greenhouse gases. The harvesting of wood leads to the destruction of forests. Such concerns have led to a renewed interest in traditional building techniques, which often utilized natural and sustainable materials.

Adobe structures are one example. Adobes have been built throughout the world for thousands of years. They use clay as a primary material, and natural clay is found in most soil. Also, gathering clay can be done with little impact to the environment. Thse days, some people prefer using clay, rather than concrete, to build their homes. It is not uncommon to see newly-built adobes in many as parts of the world. Adobes are especially favorable in tropical regions where days are hot and nights are cool. Clay helps regulate temperatures inside adobe houses.

During the day, the clay absorbs heat slowly, keeping the interior of the houses cool. At night, the clay releases that absorbed heat slowly, keeping the house warm all night. Those feature can signifiantly reduce energy costs. It can also reduce pollutants that are released by air conditioning and heating equipment.

Bamboo structures are another traditional form. In Asia, bamboo has been used as a building material for thousands of years. Th renewed popularity of bamboo as a building material is becoming apparent. More and more bamboo farms are appearing in regions where bamboo is not indigenous. One reason for this is that bamboo is an easily renewable resource. Unlike trees, which can take several decades to reach maturity, bamboo grows very fast. Some varieties can grow up to thirty-six meters in just three years. Bamboo can also be harvested without killing the plant.

Another advantage of bamboo is its durability. Although it is relatively lightweight, bamboo is much harder than many hardwoods, making it a favorite with builders who are concerned about sturdiness. It is also naturally water resistant. Ths makes bamboo structures less susceptible to water damage, and makes water-resistance treatments unnecessary. Such treatments often consist of harsh chemicals that are unhealthy for workers and bad for the

As people become more aware of the environmental impacts of modern construction, many look to the past for answers. Besides clay and bamboo, other natural materials, such as mud and stone, are becoming common features in modern buildings. Although it is unlikely that modern building materials will be completely replaced by traditional building materials, it seems that the trend is here to stay.

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