Beijing's been doing this for a while too, though they're typically aiming at drought or hailstorm prevention http://en.wikipedia.org/wiki/Beijing_Weather_Modif

Beijing's been doing this for a while too, though they're typically aiming at drought or hailstorm prevention http://en.wikipedia.org/wiki/Beijing_Weather_Modification_Office http://en.wikipedia.org/wiki/Beijing_Weather_Modification_Of...