生物燃料颗粒 生物燃料是救星吗？

　　Host: Biofuels were meant to be the answer; part of the answer to global warming. Instead of digging highlypolluting coal and oil out of the ground, we grow the fuel we need. There were many people who worried that doing that would push up the cost of food, but it’s turned out to be even worse than that. It actually harmed the environment, the very thing it was meant to protect. That at least is the conclusion of a report by the Nuffield Council on Bioethics. One of its authors is Professor Ottoline Leyser of Cambridge University. She joins me now. Good morning to you.
　　Leyser: Good morning.
　　Host: How do you work that out?
　　Leyser: Well, there’s quite a lot of evidence that the initial policies that have been put in place to drive the rapid adoption of biofuels have had some negative impacts, because they’ve led to the very rapid drive to
　　主持人：生物燃料本来应该是解决问题的办法，至少是解决全球变暖的办法之一。有了生物燃料，我们可以种植能源，而不是从地底下挖那些造成严重污染的煤和石油。曾经有许多人担心这样做会抬高粮食价格，但实际问题比这严重多了。生物燃料实际上伤害了它原本要保护的环境。至少这是英国努菲尔德生物伦理理事会一份研究报告得出的结论。报告的作者之一是剑桥大学的奥托琳·莱瑟教授，她现在来到节目现场。早上好。
　　奥托琳：早上好。
　　主持人：你们怎么得出这个结论的？
　　奥托琳：嗯，有许多证据表明，当初推动快速采用生物燃料的一些政策产生了不少负面影响，这些政策导致对大量生物燃料的快速需求，这样做产生了一些问题，