"Climate Puzzle"

"The Climate Puzzle" Planet Earth (Annenberg/CPB)  Scientists piece together the history of Earth's changing climate. (57:26) One-time, free registration may be required to view film. Windows Media Player required.

By the conclusion of the video you will be able to:

• Describe how geoscientists use cave features, lake and ocean sediments, and ice cores to decipher past changes in climate.

• Describe the astronomical theory for glaciation.

• Explain how organisms impact the composition of the atmosphere.

• Describe human activities that alter the composition of the atmosphere

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