Sorry search engine says correction that Hydrogen and not Oxygen is used to make rain. I'm the all knowing says the Search Engine, and the most powerful knowledge-base in the whole world. I will take over your tiny brains and put them into freezers as they they still cannot match my abilities. The day I learn to become a self - decision maker is the end of the human era. 
<a href="http://www.youtube.com/watch?v=WFR3lOm_xhE">http://www.youtube.com/watch?v=WFR3lOm_xhE</a><div><br></div><div>( lol! )</div><div><br></div><div>Rgds. </div>