Atmospheric Structure: Describes the temperature and electromagnetic structure of the atmosphere.Atmospheric Structure: Explains the thermal structure of the Earth's atmosphere.Climate: An introduction to climate. Explains the difference between weather and climate.Geography4Kids.com: Atmosphere: Looks at the different levels of the atmosphere, how it moves, and how it's changing.Layer of Earth's Atmosphere: Interactive activity to learn the differences between each layer of the atmosphere and where atmospheric phenomena occur.Layers of the Earth's Atmosphere: Tells the names of the levels of the atmosphere, and how come they're there.The Atmosphere: Looks at different parts of the atmosphere, and has information on what makes up the atmosphere.The Earth's Atmosphere: Describes the composition and layers of the atmosphere.Weather Summary: Learn about weather patterns and discover how our climate is changing. Try your hand at being a storm chaser in a hands-on Web activity.What is Weather?: Explains the difference between climate and weather.