The Air We Breathe - Forces Of Change - Smithsonian Institution

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Forces of Change
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  • 1 Meet Your Atmosphere
  • 2 A Layer Cake
  • 3 The Air We Breathe
  • 4 Value of Air
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The Air We Breathe

Molecules in the air include primarily nitrogen and oxygen as well as water, carbon dioxide, ozone, and many other compounds in trace amounts, some created naturally, others the result of human activity.

In addition to gases, the atmosphere contains extras such as smoke, dust, acid droplets, and pollen.

The composition of the atmosphere changes constantly and depends on the season, weather, time of day, latitude, longitude, elevation, and geography.

Visit the Oxygen Theater

cartoon of two oxygen atoms shaking hands Click to journey into the cartoon world of an Oxygen atom. illustration of the molecules in air
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