Bad News Breathing Uneasy Those nasal strips athletes wear to boost their performance may not be up to snuff.

坏消息呼吸困难那些运动员为了提高成绩而使用的鼻管也许并不能达到预想的效果。

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CHICAGO (Reuters) - Healthy people are increasingly turning to brain-enhancing drugs like Ritalin to boost their performance in school or at work, researchers said on Monday.

芝加哥(Reuters) -研究人员在星期一表示，越来越多的健康人开始使用脑增强药物，比如利他林，来提高他们在学习或者工作中的表现。

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Some oil companies are adding nitrogen to their gasoline. But does it cause pollution as well as boost performance a bit?

有些石油公司向汽油里加氮。这提高了汽油的性能，但会不会引起污染呢？

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They have been trying to boost their performance by shortening the duration (a measure that takes into account not just a bond's maturity but the interest it pays) of their portfolios.

ECONOMIST: Bond bombshell

Those familiar with over-the-counter remedies to boost athletic performance remain dubious on their effectiveness.

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Computerised fuel-injection has improved diesels' performance, and their inherent strength means they can be turbocharged to boost power even further.

ECONOMIST: Monitor