The mankind has mastered the Earth, air and water spaces. In space the satellites equipped by the special equipment for an establishment of contact to inhabitants of other civilizations are started. Yes, we not one. In the Universe innumerable quantity of stars, planets, galaxies, and our Solar system only a drop at huge ocean of the Universe. But the photos made from satellites, have shown, that on one planet, at least our Solar system, there are no conditions for a life. The Earth – unique and unique, given to us from above.

But on the Earth the world rolls in bloody wars, people suffer from painful illnesses; thousand lives were carried away with Chernobyl accident. People cut down woods, exterminate animals; factories and factories pollute an atmosphere. Irrational use of the ground leads to destruction of flora and fauna, on the Earth deserts are formed, the rivers become boggy, springs disappear.

People, often not reflecting or not understanding, destroy the fine natural house – the Earth.

And in fact it is necessary to understand, that the person – a part of the nature, instead of its lord, therefore the person is obliged to keep it in the name of the future generations.