During the past 15 years a new middle class has sprung up in emerging markets, producing a silent revolution in human affairs-a revolution of wealth-creation and new aspirations.

过去15年来，一个全新的中产阶层开始在新兴市场国家迅速成长起来，为人类事业上带来了一场无声的变革——关于财富创造和全新愿望的变革。

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Pachauri called it a "silent revolution, " and one that people across the world would follow.

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Companies like United Technologies are at the forefront of this silent revolution, rightly bragging with full-page (admittedly geeky) advertisements touting such engineering accomplishments.

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But the prosperous west has undergone its own silent revolution too.

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