标题： 燃料的食物：乙醇的价格 显示英文标题

标题： Food for fuel: The price of ethanol

摘要： 自2005年以来，美国将玉米转化为乙醇已成为这一时期全球粮食价格上涨的主要原因，并且已被证明在实现美国能源独立和减少环境影响方面是无效的。 我们提出三个关键陈述，以增强对乙醇生产对食品和燃料市场影响的理解和沟通：(1) 一加仑普通汽油中生产的乙醇所使用的玉米足以供一个人吃一天，(2) 乙醇的生产非常耗能，它仅比汽油少使用20%的化石燃料，(3) 使用乙醇制造的汽油每英里成本实际上更高，因为乙醇降低了汽油每加仑的能量含量。 显示英文摘要

摘要： Conversion of corn to ethanol in the US since 2005 has been a major cause of global food price increases during that time and has been shown to be ineffective in achieving US energy independence and reducing environmental impact. We make three key statements to enhance understanding and communication about ethanol production's impact on the food and fuel markets: (1) The amount of corn used to produce the ethanol in a gallon of regular gas would feed a person for a day, (2) The production of ethanol is so energy intensive that it uses only 20% less fossil fuel than gasoline, and (3) The cost of gas made with ethanol is actually higher per mile because ethanol reduces gasoline's energy per gallon.