(3 Dec 2020)

For six decades, the communist nation has deployed military aircraft and anti-aircraft guns to lace clouds with silver iodide or liquid nitrogen to thicken water droplets to the point where they fall as snow or rain. The technology has mostly been used at a local level to alleviate droughts or clear skies ahead of major events, such as the 2008 Olympics or last October’s 70th anniversary of the People’s Republic of China.