Unlike the air, the temperature in the subsoil varies very little during the year or according to geographical position. A few meters below the surface, the ground temperature is between about 10 to 21°C (50 to 70°F) depending on the region. Dig deeper, and the temperature increases between 20 to 40 degrees centigrade per km, reaching the Earth's core, which approaches 5000 °C. In fact, thinking about how we inhabit a sphere that is orbiting through space with a glowing center can be distressing for some. However, it may be helpful to learn that using Earth's forming energy to generate electricity is a sustainable and efficient way that is already common in some countries. At the same time, we can also take advantage of the mild temperature found a few meters under the ground to acclimatize buildings, whether in hot or cold climates.
Fernando Guerra | FG+SG
Fernando Guerra has been a pioneer in the way architecture is photographed and divulged. Fifteen years ago, he opened studio FG+SG together with his brother, and both are responsible in large part for the diffusion of Portuguese contemporary architecture in the last fifteen years.
With the high population density of cities and voracious appetite of the market for every square meter, it is not uncommon for urban vegetation to be forgotten. For this reason, forests, vegetable gardens, and vertical gardens have aroused much interest and figured into a variety of different innovative proposals. Using the vertical plane to maintain plants in an urban setting is a coherent and common-sense solution, especially when there is little possibility of bringing green to the level of the people on the streets.