The meteorologists say they can force rain in the days before the Olympics, through a process known as cloud-seeding, to clean the air and ensure clear skies. China has been tinkering with artificial rainmaking for decades, but whether it works is a matter of debate among scientists.
Weather patterns for the past 30 years indicate there is a 50
percent chance of rain for both the opening ceremony on Aug. 8, 2008
and the closing ceremony two weeks later, said Wang Yubin, an engineer with the Beijing Meteorological Bureau.
The forced rain could also help clean Beijing's polluted air, said Wang Jianjie, another meteorologist with the bureau.