Policymakers are in a tangle over how to account for the higher 'well-to-wheel' emissions of fuel extracted from sand, Sonja van Renssen reports.
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References
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What's in a name?. Nature Clim Change 1, 241–242 (2011). https://doi.org/10.1038/nclimate1180
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DOI: https://doi.org/10.1038/nclimate1180