Often hard-to-understand concepts of air, gases, air pressure, and layers of the atmosphere are plainly explained in this fascinating video. Concepts and terminology: oxygen, nitrogen, layers, weather, jet stream, and northern lights.

Originally released by Visual Learning, 2011. Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015. Teacher's guide available under Additional info tag.

Air (2:30); --What's In Air? (2:16); -- The Atmosphere in Action (2:00); -- Video Review (1:04); -- Video Quiz (1:36); -- Credits: The Air Around Us (0:50); .