These days, ethanol is praised as the whiz-bang cure-all for our energy ills. And maybe all the sweet talk will cause this “new” fuel to forget that America dumped her for oil in the early 20th century. Oil’s just so … ew all of a sudden. We may finally be ready to return to our first love, an energy source that’s been by our side in some form or another since Neolithic times. Oil was too high-maintenance and demanding, anyway.

And ethanol’s a much better match … right? Or maybe biodiesel is the one? Or vegetable oil? Hemp? Turkey guts?

For all the hype, most people barely know enough about biofuels to drop a line or two at a cocktail party. What is ethanol, and how’s it different from biodiesel, and where does fry grease come in? Are there cars that can run on this stuff, and who’s making them, and where can they fuel up? Who sells it, who makes money off it, and why’s it such a political darling? Does “cellulosic” ethanol actually exist in the wild? What’s the big deal with Brazil? And does Willie Nelson really run his bong on biodiesel?

We’re here to help. Biofuels — derived from recently living organisms or their metabolic byproducts, aka plants, animals, and poop — are back, big time. Here’s your two-week crash course.

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Biofuels series index:
Issues and implications
Profiles of proponents
Helpful resources

Uh, bio-what? Explainers

Not so fast: Issues and implications

Count me in: Profiles of proponents

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Helpful resources

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