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POPSInteractive comparison of biofuels Summary & screenshots of Ntl Geographic's interactive module for comparing biofuel sources. Will it be corn, sugarcane, scum (algae) or nought? Ladies & gentlemen, place your bets!
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POPSThe trouble with hybrids Why a complete fuel alternative that can also be retrofitted into existing cars would be more efficient than hybrids.
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POPSIndy Racers Power Engines With Ethanol I'm quite impressed by the IRL's steps on this. What I'd like clarify what are the necessary steps for reftrofitting a car to run on ethanol. The article read as if they just poured in some ethanol and that was that.