Dec.1 Essay - MenghengLi ProfessorJoanneMcgahagan...

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Mengheng Li Professor Joanne Mcgahagan ENGCMP 9:00AM 31 Nov. 2009 As human beings are facing the energy crisis and environmental problems caused by the fossil fuels, we cast our eyes on some other alternatives. In recent years, biofuels are thought to be an option that most likely takes the place of fossil fuels. In the article “My Big Biofuel Bet”, Vinod Khosla reveals his optimistic view on the worldwide use of biofuels (21-25). However, I cannot agree with him because biofuels not only have little efficiency of reducing carbon dioxide emissions, but also leads to other catastrophes. Disappointingly, the total efficiency of reducing carbon dioxide emissions is not as desirable as it supposed to be. As an article on Greenpeace , the total emissions of carbon dioxide during the process from corns to ethanol and from ethanol to the use of it are just slightly less, sometimes even more than the use of fossil fuel (Yang). This is because that refining and transporting biofuel should also be energy-
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This note was uploaded on 12/03/2011 for the course ENGCMP 0020 taught by Professor Magagen during the Fall '09 term at Pittsburgh.

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Dec.1 Essay - MenghengLi ProfessorJoanneMcgahagan...

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