Researchers uncover how the surface structure of silver iodide at the atomic scale triggers ice formation in clouds, ...

Clouds are a collection of very tiny water droplets, or ice crystals, that float in the air together. They're able to float because they're so small and light. Rain forms when they all start combining ...

Cloud seeding is a process of injecting chemical substances into clouds to trigger artificial rain. The process is gaining popularity as a means of ending drought, pollution, and water shortages.

The idea of using artificial rain to wash away smog is now being tried in India's capital. Cloud seeding is being seen as a hopeful tool for helping Delhi breathe easier but it comes with a big if.