national science foundation.gov weather modification PDF http://www.nsf.gov/nsb/publications/1965/nsb1265.pdf
Millions were in germ war tests
The Ministry of Defence turned large parts of the country into a giant
laboratory to conduct a series of secret germ warfare tests on the public.
A government report just released provides for the first time a comprehensive official history of Britain's biological weapons trials between 1940 and 1979. Many of these tests involved releasing potentially dangerous chemicals and micro-organisms over vast swaths of the population without the public being told. While details of some secret trials have emerged in recent years, the 60-page report reveals new information about more than 100 covert experiments.
Calgary hail shrunk by cloud-seeding planes
The Monday storm that pounded Calgary with hail the size of golf balls would have been even more severe if cloud seeding planes hadn't been in the sky earlier in the day, says an official with the company that flies the aircraft.
Rain out: China aims to control Olympics
BEIJING — As they prepare to host the Olympics — an event whose very purpose is to push the limits of human beings — the Chinese are trying to do what man never has: Control the weather. With five months to go before the Summer Games come to Beijing, Chinese scientists say they are confident they can keep rain away from the opening ceremony, or summon a storm on cue to clear the city's choking pollution.
The Beijing Weather Modification Office is a unit of the Beijing Meteorological Bureau tasked with weather control in Beijing and its surrounding areas, including parts of Hebei and Inner Mongolia. The Beijing Weather Modification Office form a part of China's nationwide weather control effort, believed to be the world's largest; it employs 37,000 people nationwide, who seed clouds by firing rockets and shells loaded with silver iodide into them. According to Zhang Qiang, head of the Office, cloud seeding increased precipitation in Beijing by about one-eighth in 2004; nationwide, similar efforts added 7.4 trillion cubic feet (210 km3) of rain between 1995 and 2003. The work of the Office is largely aimed at hailstorm prevention or making rain to end droughts; they have also induced precipitation for purposes of firefighting or counteracting the effect of severe dust storms, as they did in the aftermath of one storm in April 2006 which dropped 300,000 tonnes of dust and sand on the city and was believed to have been the largest in five years. Their technology was also used to create snow on New Year's Day in 1997. Other proposed future uses for induced precipitation include lowering temperatures in summer, in hopes of reducing electricity consumption. More prominently, they were enlisted by the Chinese government to ensure that the 2008 Summer Olympics are free of rain, by breaking up clouds headed towards the capital and forcing them to drop rain on outlying areas instead. The office created a snowstorm in November of 2009.