The cloud seeding technology is widely used by many countries of the world in an attempt to establish control over nature. They add silver iodide, dry ice and liquid nitrogen to the clouds causing immediate precipitation. As a result, the rain will be over by the time the clouds reach the place of destination. People thought of controlling precipitations in the 17th century. They used bell ringing and gunnery for the purpose of cloud shifting. Nowadays Moscow keeps practicing cloud seeding when the coming great events to be celebrated like Victory Day on the 9th of May demanding good weather.