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50 gallons per mile?!? That's the water cost of corn-based ethanol

The nail in the coffin of corn-based ethanol might be made of water. The magazine Environmental Science & Technology has published an article that pegs the amount of water needed to make enough corn ethanol to move a vehicle one mile at 50 gallons. That's pretty high. ES&T calculated the amount of water needed to grow the corn as well as the water that is affected by agriculture. From the article: As biofuel production increases, a growing need exists to understand and mitigate potential impacts to water resources, primarily those ... Read more →

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