我们试图理解生物燃料能否取代化石燃料，如果生物燃料足够可持续。生物燃料和生物燃料有许多争论。抗生物燃料大堂David Pimental声称像玉米增加世界粮食作物的营养和伦理问题表示。Keith Kline，Virginia H. Dale，Russell Lee，在翔实的文章“在防御的生物燃料，做好支持生物燃料游说Paul Leiby，“声称没有理由害怕或担心。
联合国粮食与农业组织总干事Jacques Diouf报告说，利用土地生产粮食生产生物燃料会导致粮食短缺。Keith Kline和其他人反驳说，与美国农业部估计，在世界和2007年度闲置的耕地数量庞大的说法，只有2100万亩–即只有0.4%到4%被用于生产生物燃料的原料。
We try to understand if biofuels can replace fossil fuels; if biofuels are sustainable enough. There are many arguments both for and against biofuels. Anti-biofuel lobby represented by David Pimental claims that using of food crops like corn raises nutritional and ethical concerns for the world. Keith Kline, Virginia H. Dale, Russell Lee, and Paul Leiby of Pro-biofuel lobby in the informative article “In Defense of Biofuels, Done Right,” claims there are no reasons to be alarmed or be worried.
Using prime agricultural land and resources for bio-fuel crops has definite effects on resources needed to grow food crops. It has long-term effect on food supply and prices of the food grain the world over. Focus should be on the bio-fuels crops that are not resource intensive.
If one uses prime agricultural land and resources, the procedure of producing biofuels consumes more energy than it makes available. We need to know whether biofuels actually help in reducing overall carbon emissions. Alternatively, the whispers that say it is the propaganda of special interest groups who benefit from Governmental support and funding need to be laid to rest.
Main purpose of the reading is to understand the real concerns of both the pro-biofuel and anti-biofuel lobbies. Biofuel crops have several benefits like increasing wildlife habitat, reducing fossil fuel use, stable global land use, improving soil, and water quality etc. David Pimental, however, argues that biofuel contributes to deforestation and global food shortage.
Growing biofuel crops on land meant for growing food for human consumption has lasting effects .Jacques Diouf, Director General of the UN Food and Agriculture Organization, has reported that using land for food grains to produce biofuels causes food shortages. Keith Kline and others refute the argument with USDA estimates that says there is huge amount of idle cropland in the world and in year 2007, only 21 million acres –i. e, only 0.4% to 4% of it was used to produce bio-fuel feed stock.
The Learning and the solution:
The solution lies in using land that is not used for food crop and by not using resources like water, energy that are already in short supply. Energy crisis can be solved partially by ensuring bio fuel feed stock that is processed by algae or bacteria.