Mysterious ancient constructions of the East and Mesoamerica seems a little fantastic, perhaps because of their exoticism. Skeptics can “grasp” that idea and declare that ancient temples of the Mayans and the Sumerians simply because seem to be something supernatural that belong to alien cultures, but because we (Caucasians in this case) perceive them “his” perspective and can’t objectively assess the level of development of ancient civilizations. Perhaps this is so. But, referring to mental differences cannot explain the mystery no less remarkable buildings in Europe, of Course, is that we have not figured out their purpose and do not understand how our ancestors were able to create a similar, possessing only primitive technologies that does not give us the right to declare them the work of extraterrestrial civilizations. However, there are no other scientifically based theory, this assumption cannot be discounted.
Example of mysterious ancient structures in Europe can serve as Stonehenge.
Stonehenge, the ancient cyclopean building, located in the South of England and fully visible only from a great height. Stonehenge is systemcontentfile circles with a diameter of more than a hundred meters, delineated the shafts, holes and large stones-megaliths. Continue reading
Some species are solitary insects that build shelters for themselves and their offspring, live in the soil. This is due not only the development of certain building instincts, and the appearance of specific morphological structures. In this respect, the remarkable mole cricket. Their front legs turned into a typical digging organs with which insects perform a large amount of excavation. Suffice it to say that the ordinary mole cricket prokativaet underground a network of branched passages at a depth of 10-20 cm in the summer and in the winter deepens to 1 M. With this activity of mole crickets is associated with its Latin name, which translated into Russian language means “cricket-mole”.
Many species of wasps construct few combs. They are often located in tiers one under the other. In this case, the first is based top cells. As more families and expanding the nest to the first cell using the legs is attached the second hundred, etc. the Nesting structure of this type is characteristic of the genera spring, parvispora, polybia, etc. Some intermediate position between single-stage and multistage arrangement of cells is the nesting design of the concentric type, such as, for example, OS nectarine, inhabiting the tropical parts of South America. Honeycombs in the nests of these wasps have an Orb C shaped. The cells are strengthened on the common base constituting the spiral sakrusenergo nests. Continue reading
Integrated development of underground space is a natural process of modern urban development. The shortage of land in Metropolitan areas encourages urban planners around the world to find a way for the development of territories. The reorganization of the depressed areas – industrial and obsolete housing blocks – the most obvious in this sense the decision. Not less associated with high-rise, as well as underground construction.
Global urban studies the potential uses of the underground spaces with great success. In Russia, an avid fan of such ideas, for example, was the former mayor of Moscow Yuri Luzhkov. However, the new Metropolitan government, as you know, chose a different strategy of development of the city based on the accession of new lands.
We go for examples
The share of underground facilities in the developed countries reaches a quarter of the total area of commissioned facilities. The unequivocal leader in this indicator is Canada, the cities which have a huge dungeon mastered, employed as infrastructure facilities and various public areas. For example, in Montreal created a total of around 12 million square meters of underground facilities in Toronto – at least 6 million sq. m. European metropolises – Helsinki, Munich, Paris and others also have their own underground extrapolation. Continue reading