Ethanol Not So Green After All?

Publication: National Geographic News   Date: July 11, 2006   View Article

High gas prices, the threat of shrinking oil reserves, and global warming guilt are driving interest in ethanol, biodeisel, and other biofuels—energy sources produced from agricultural plant matter rather than fossil fuels such as oil and coal.

But can biofuels really replace petroleum products? And are they really better for the environment than fossil fuels?

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