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Most promising, he says, is cellulosic ethanol, made from paper pulp, specially designed fuel crops like switchgrass and many wastes that can be diverted from landfill and turned into fuel.
These include products made from the switchgrass and wood chips mentioned in President Bush's address.
The preferred overwintering sites of adult chinch bugs are dense clumps of native warm-season bunchgrasses such as little bluestem, big bluestem and switchgrass .
More energy was also required to produce fuels from switchgrass , wood chips, and sunflower plants than their respective fuels generate.
Using switchgrass for ethanol production results in even higher energy gains: up to 72 percent.
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