Hydrophilic Crystals

Small amounts of rain can mean the difference between struggle and success. For nearly 80 years, an approach called cloud seeding has, in theory, given people the ability to get more rain and snow from storms and make hailstorms less severe. But only recently have scientists been able to peer into clouds and begin to understand how effective cloud seeding really is. We speak with three researchers about the simple yet murky science of cloud seeding, the economic effects it can have on agriculture and research that may allow governments to use cloud seeding in more places.

Featuring Katja Friedrich, Associate Professor of Atmospheric and Oceanic Sciences, University of Colorado Boulder; Dean Bangsund, Research Scientist in Agribusiness and Applied Economics at North Dakota State Univeristy; and Linda Zou, Professor of Civil Infrastructure and Environmental Engineering at Khalifa University.

This episode of The Conversation Weekly was produced and written by Katie Flood. Sound design was by Eloise Stevens, and our theme music is by Neeta Sarl. Full credits for this episode are available here. Sign up here for a free daily newsletter from The Conversation.

Further reading: 

• Cloud seeding might not be as promising as drought-troubled states hope
• What would it feel like to touch a cloud?
• Does cloud seeding work? Scientists watch ice crystals grow inside clouds to find out