【Earth&Sky】鱼食怎样来自啤酒_英语听力练习mp3下载-科学-沪江听力酷

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【Earth&Sky】鱼食怎样来自啤酒

听力简介：

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Here's a puzzle: What can you get from beer other than a good time and a [---1---] ? The answer is, an ingredient for fish food. And, a sustainable solution for the growing human demand for fish. EarthSky Lindsay Patterson spoke to environmental engineer Andy Logan, whose company is called Oberon FMR. for 'fish meal replacement.'

Food for industrial fish farms is usually made from other fish… tiny wild fish like herring and anchovies. The problem is, demand for fish is rising due to growing populations, but [---2---] – including that which [---3---] fish meal – is not growing. It's overfished and unsustainable. So using waste products of other industries as a fish meal replacement seems pretty smart.

[---4---]

Well, after you brew a vat of beer, there's some residue left over in the bottom of the [---5---] . Oberon – Logan's company – grows bacteria that eats this stuff up in the brewer's wastewater treatment facility. Then the bacteria gets dried out. It ends up as a flaky, brown substance high in nutrients and protein. And it lets some of those little fish off the hook.

Thanks, Lindsay. I'm Deborah Byrd for EarthSky, a clear voice for science. We're at EearthSky.org.

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