Science for the Public 10/22/13. Daniel Cziczo, PhD, Associate Professor of Atmospheric Chemistry, Massachusetts Institute of Technology. A fascinating discussion of how atmospheric particles (aerosols) trigger cloud formation, and how different types of particles affect such formation. Dr. Cziczo's lab specializes in high-altitude cirrus clouds, the type that have an important role in climate change. But that cloud and particle relationship, as Dr. Cziczo explains, is not well understood, and because of climate change the research of the Cziczo Lab is vitally important. The video includes lab footage, with a demonstration of cloud formation by Dr. Cziczo, and explanations of different types of equipment and analysis by researchers in the lab. This is an excellent resource for educators as well as for the general public.