Watch Atmospheric Pressure & Solar Energy

Our planet is enveloped by air. As this informative program explains, the atmosphere has several layers, each with its own properties. The weight of air pressing on the Earth is called atmospheric pressure, and it varies according to the weather. With energy from the sun, the atmosphere drives the world's "weather machine," and the overproduction of greenhouse gases seems to be making the earth's overall climate warmer.

Atmospheric Pressure & Solar Energy is a 2007 special interest movie with a runtime of 9 minutes.