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| Filename: | en-0047-d.jpg |
| Image Description: | Golden, Colorado - A bottle of ethanol and some of the materials ethanol can be made from at the National Renewable Energy Laboratory, operated by the US Department of Energy. Scientists are developing economical processes for making cellulosic ethanol from materials such as corn stalks, poplar, switchgrass, and other non-edible plants. © Jim West |
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