■NPR是National Public Radio，即美國(guó)國(guó)家公共之聲。節(jié)目以新聞及綜述為主,是美國(guó)國(guó)內(nèi)收聽率最高的廣播之聲。
■該臺(tái)節(jié)目較為公正，銳利，反映美國(guó)生活的方方面面，具有很強(qiáng)的思想性。
■新聞稿寫作工整，用詞固定和地道，書面化很強(qiáng)，非常值得大家認(rèn)真學(xué)習(xí)。播音員發(fā)音純正，平緩。

概述:It is known to all that the air pollution is detrimental to human health, but is there any benefits we can receive from these pollutants? Recently, researchers have discovered something that contravened our common sense.



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Science magazine
"They can add nutrients, for example, to the oceans or to the land, but also while they were in the atmosphere, they changed the climate and so that also can impact how much carbon the land or the ocean can take up. So there's quite a few different ways that aerosols can interact." In an article published in Science magazine, she concludes that those effects add up to quite a bit, which means, at the moment, aerosols are not only helping reduce global warming by cooling the atmosphere, but they're helping reduce the amount of carbon dioxide that stays in the air once we emit it. That's good news for now, it means the planet isn't heating up quite as fast as it could be, but it's bad news looking down the road a little bit. That's because many aerosols make people sick, heart and lung disease, in particular. So some nations are now in the process of trying to rein them in. "As we clean up the aerosols, which we really wanna do for public health reasons, we're going to be, perhaps, causing ourselves more trouble in terms of the climate situation." This is not a brand new idea. For example, other research has found that, if we switch from coal to much cleaner natural gas, that might not do much to help with global warming because we'd also be reducing the pollutants in coal smoke that help offset warming.