单词：cumulative (chronic) performance decrement
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Now: A new study raises even stronger concerns about the risks of brain injury from the country's most popular professional sport. It's the focus of our weekly segment the Leading Edge. And Hari Sreenivasan has the story from our New York studios. We
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By Carolyn Presutti Washington 07 December 2007 CT scans, also known as CAT scans, have long served as lifesaving tools to expose deadly diseases. But a new study finds that CT scans might also cause diseases. VOA's Carolyn Presutti has the story. C.
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Several Surprises in Oscar Nominations 本届奥斯卡提名名单揭晓充满惊喜意外 The Academy of Motion Picture Arts and Sciences has announced this years Oscar nominations. As usual, not everyone is happy about the choices. The nominees wer
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C-PAP Could Help Heart Patients Anyone whose husband, wife or partner who snores loudly is probably wishing for a separate bedroom. It's the telltale sign of obstructive sleep apnea, a chronic disorder in which the person experiences shallow breathin
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The World Health Organization (WHO) says Israel is blocking vital medical supplies from entering the Gaza Strip. The U.N. agency says it is impossible to maintain a well-functioning health system if necessary supplies are not available. The World Hea
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Not getting enough sleep can affect you in more ways than you might expect, as Yael and Don discuss in this Moment of Science. Y: Today, on a Moment of Science, we're conducting an experiment on sleep deprivation. On my right, we have my friend Bob,
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