Everyone knows about the seven Wonders of the World, which catch our eyes by their beauty and mystery.  But we, Polina, Tanya and Masha -  creators of this blog know that there is one more Wonder, no less impressive. It was created by Man and we can see it in our everyday life, we get used it and don’t engross in thought how does it act. This Wonder gratifies us for more than 120 years already and we hope it won’t stop in its development. “What is it then?” you’ll ask. If you are really curious welcome to our blog!