The paper shows actual ecological problems, reveals the causes of the “greenhouse effect” and sorts out, who is to blame for the climate changes and other issues, caused by the human activity all over the world. The influence of a mankind on the world’s ecology during the past hundred years is hard to overestimate, and the biggest part of the guilt lies upon the developed countries, while the whole world suffers the consequences. In near future, urbanization of the humanity won’t reduce, besides, it will develop fast and the predictions made by the analysts say that by the 2050 85% of people will live in the cities. But there is much that we can do for our planet, without rejecting the technological progress benefits, and even urbanization can be “green”. This article shows the ways of improving our life quality by applying the ecological design methods to the building construction sphere