Another factor is the squeeze that conventional dairy farmers have felt as the price of grain they feed their cows has gone up, tightening their profit margins.

另一个因素是，传统的奶农在他们喂养奶牛的谷物价格上涨时感到了压力，他们的利润空间也被压缩。

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Now, as world grain prices hover near record highs, a new study finds that the effects are already starting to be felt.

目前，由于世界谷物的价格徘徊在记录高位，一项新的研究发现气候变暖的影响已经开始显现。

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And Broin at POET felt that this could allow grain-based ethanol to meet as much of the full 36 billion gallon mandate as could be economically feasible given corn prices.

FORBES: Obama: Corn Ethanol Isn't So Bad After All