China reveals plans to expand its experimental weather modification program over the next five years, to cover an area greater than the size of India with artificial rainfall.

Vast system of chambers on Tibetan plateau could send enough particles into the atmosphere to allow extensive clouds to form. By Stephen Chen.

Operation Popeye was a secret Vietnam War-era effort to conduct covert cloud seeding over Vietnam, Cambodia, and Laos, extend the monsoon season, and give the United States an advantage in the war. By Eleanor Cummins.

Initially invented for the printing industry, the technology has transformed the way we live and work. By Tim Harford.