Is there really a…

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Is there really a significant reduction in overall carbon emissions from adding ethanol to fuel. I am aware of studies that actually show that adding ethonal to fuel results in a net increase in carbon emissions.
Adding ethonal to fuel can result in damage to some engines. Is it really worth the bother of adding ethonal to fuel and risking damage to engines when people cannot even agree that there is an environmental benefit to doing so?
https://academic.oup.com/bioscience/article/55/7/593/306765
http://thehill.com/policy/energy-environment/293291-study-ethanol-incre…
https://www.scientificamerican.com/article/ethanol-not-cut-emissions/

[Original Comment ID: 211477]