Richard Alley tells the story of East Coast deforestation and the extinction of nearby whales . . . when using without thinking ahead led to "all used up."

 

Classroom educators and outreach professionals can register to download HD segments for free by visiting the Educators section of the Earth: The Operators' Manual website.
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    Nov. 19, 2013

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This material is based in part upon work supported by the National Science Foundation under Grant No. 0917564. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.