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Biofuels have direct, fuel-cycle GHG emissions that are typically 30-90% lower than those for gasoline or diesel fuels. However, since for some biofuels indirect emissions-including from land use change-can lead to greater total emissions than when using petroleum products, policy support needs to be considered on a case by case basis.
The IPCC has released a finalized draft of its Working Group III report. Sourced from Forbes, their analysis: that ethanol is worse than petroleum. The Working Group itself managed to say... Well, after a quick read-through of chapter 8, it appears they managed to keep any actual meaning occluded by a thick screen of political double-speak. So, I guess they said whatever you would like them to have said since nobody can prove any different.
(Score: 2) by Reziac on Tuesday April 22 2014, @02:50AM
I've seen figures as negative as "5 gallons of diesel to produce 4 gallons of corn ethanol". I don't know how accurate that is, but kinda goes to show we shoulda looked somewhere else. -- Thanks for the article on switchgrass. There was someone in the eastern Antelope Valley growing it a few years ago... tho they let it die off after a couple years. Likely couldn't make it with the high cost to pump water in SoCal.
And there is no Alkibiades to come back and save us from ourselves.