• The Atmosphere [ Teens/Mature Teens ] - Looks at different parts of the atmosphere, and has information on what makes up the atmosphere.
• Atmospheric Structure [ Mature Teens ] - Describes the temperature and electromagnetic structure of the atmosphere.
• Climate [ Teens/Mature Teens ] - An introduction to climate. Explains the difference between weather and climate.
• The Earth's Atmosphere [ Teens/Mature Teens ] - Describes the composition and layers of the atmosphere.
• Geography4Kids.com: Atmosphere [ Teens/Mature Teens ] - Looks at the different levels of the atmosphere, how it moves, and how it's changing.
• Layers of the Earth's Atmosphere [ Teens/Mature Teens ] - Tells the names of the levels of the atmosphere, and how come they're there.
• Weather Summary [ Kids/Teens/Mature Teens ] - 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? [ Kids/Teens/Mature Teens ] - Explains the difference between climate and weather.

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