| Title | Comment | Keywords |
|---|---|---|
| New Energy Sources | 18:40 - 19:19 (00:39) / 0.5 MB | "James Sadd", environment, "fossil fuel", energy, humans, "human power", technology, "wind power", "solar power", geothermal, pollution, "renewable resource" |
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USGS CMG InfoBank Geology School: renewable resource |
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