Instead of sulfur dioxide, the University of Washington researchers are using specially designed nozzles to spray misted seawater containing tiny particles of sea salt over the deck of the Hornet.

China hopes to increasingly control when and where it rains in the country. Ally Hirschlag examines its controversial cloud ...

Evidently spooked by prominent media reports, the Alameda City Council has now asked the researchers to halt their experiments. "City staff are working with a team of biological and hazardous ...