Since the American study of 1997 raised the spectre of a connection between weight and early puberty, scientists have become convinced that there is at least some link with the obesity epidemic.

自从美国1997年的那项研究提出体重与青春发育期提前之间隐约存在联系，科学家已经相信，青春发育期至少与肥胖流行有某种联系。

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American scientists say depressed fathers are very likely to affect and hamper their children's language abilities, according to a study of over 5000 families.

据美国学者发现，父亲患抑郁症会直接影响孩子的语言能力发育。这是美国一家医院学的研究人员对5000个家庭进行调查后发现的。

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American scientists are to study, after 25 years of time, to make this judgement.

科学家是以美国黑人为研究对象，经过了25年的时间之后，做出此判断的。

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Money from the Borlaug Fellowship program will let the researchers study agricultural climate change with American scientists.

VOA: special.2010.01.05

The data for Messrs Aguiar and Hurst's study comes from time-use diaries that American social scientists have been collecting methodically, once a decade, since 1965 (the latest one used in their paper was from 2003).

ECONOMIST: Why Americans have plenty of time to read this

He was also featured in a recent study by the National Foundation for American Policy that found 35 percent of the physician scientists at the Johns Hopkins Sidney Kimmel Comprehensive Cancer Center are immigrants.

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Chao is President of the American Neuroscience Association and a key decision-maker as to which scientists are able to get research money to study the brain from the National Institute of Health.

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