nique is. There is no doubt that as we apply new biological techniques, catalyst programs, and chemistry, we will make it even better.
Richard Wool: How much fossil fuel energy is expended in breaking the starch down into sugars?
Patrick Gruber: I have the numbers for total percent of the PLA, but I don't remember exactly. It is very small, because it is a highly efficient enzymatic process that takes place under mild conditions.
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11. Commodity Polymers from Renewable Resources: Polyactic Acid ."
Carbon Management: Implications for R & D in the Chemical Sciences and Technology (A Workshop Report to the Chemical Sciences Roundtable) . Washington, DC: The National Academies Press,
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As of 2013, the National Science Education Standards have been replaced by the Next Generation Science Standards (NGSS), available as a print book, free PDF download, and online with our OpenBook platform.
The NGSS offer a detailed description of the key scientific ideas and practices that all students should learn by the time they graduate from high school. The standards are based largely on the 2011 National Research Council report A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas.