From the Wall Street Journal:
The opening ceremonies of the 2008 Beijing Olympic Games may be a year away, but authorities are already fretting about what to do if it rains on their roofless stadium.
So Zhang Qiang, head of Beijing’s Office of Weather Manipulation, has been firing chemical-laced rockets at rain clouds. He hopes to figure out a way to keep the ceremonies dry by triggering cloudbursts away from the city….[full text]