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Richard Alley puts numbers on global renewable resources: solar, wind, geothermal, biomass, and conservation.
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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Last Updated
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.