Use corn and other crops, instead of … The Problem With Biofuels. What are Biofuels? "There's no carbon debt," notes Fargione. "More emphasis on 'how do we make biofuels better' rather than just 'let's have more biofuels'." “More emphasis on ‘how do we make biofuels better’ rather than just ‘let’s have more biofuels’.” Although these problems have been identified and studied, if not widely discussed, some experts suggest that maybe they don’t matter in the long term. The numbers might look quite different, though, for biofuel derived from agriculture waste products which would otherwise end up in a landfill. The Problem with Biofuels. Once fossil fuel prices rise back up, those types of waste-based fuels might present favorable economics and will likely be developed further. By Mark Phillips July 12, 2008 / 9:23 PM / CBS It seemed like a good idea at the time. Biodiesel has been manufactured from poultry processing waste, for example. Fuels that have been extracted from plants and crops are known as biofuels. Although these problems have been identified and studied, if not widely discussed, some experts suggest that maybe they don't matter in the long term. The U.S. Navy is touting its “Great Green Fleet,” but why haven’t biofuels made a bigger splash despite a decade of hype and investment? Biofuels using waste matter — like wood chips, or the leftover sections of corn stalks — or from perennial plants like switchgrass, effectively amount to free fuel, because they don't require clearing additional land.

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