"[T]he ice in the usable areas of the north polar seas could be melted... to navigate the northern coasts of Europe and Siberia year round. The warming of the Caspian Sea could... produce rain in arid regions of Central Asia. Directing... rays... where spring and autumn frosts are expected would allow... increase[d] fertility... Oberth claimed... it would open up... predicting the weather, but also... determining the weather."