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By Jessica Berman Washington 24 January 2008 Researchers say they have improved the accuracy of automatic face recognition systems, which are being used more and more by crime prevention and national security agencies. The investigators have created
VOA标准英语2008年（一月）
NOEL KING, HOST: All right, we know that giving your mental muscles a workout can help keep your brain sharp as you get older. The question is what does that workout look like? Is it crossword puzzles? Is it computer games? To find out, NPR's Jon Ham
2018年NPR美国国家公共电台10月
By Jessica Berman Washington 06 December 2007 Children who are overweight are at significant risk of developing heart disease as adults. That's the conclusion of two studies published in this week's New England Journal of Medicine , which predicts wh
VOA常速英语2007年（十二月）
By Heda Bayron Hong Kong 02 August 2007 U.S. scientists say clouds of man-made haze that blanket southern and eastern Asia are helping accelerate the melting of the Himalayan glaciers. VOA's Heda Bayron reports from our Asia News Center in Hong Kong
2007年VOA标准英语（八月）
By Cindy Saine Washington 14 May 2008 Scientists have announced the discovery of the youngest known exploding star, or supernova, in our Milky Way galaxy. Astronomers say the remnant of the most recent supernova could provide clues to a long-standing
VOA标准英语2008年（五月）
By Benjamin Sand Islamabad 02 July 2007 Pakistani officials are denying reports that the government has eased travel restrictions on disgraced nuclear scientist AQ Khan. He has been under strict house arrest since 2004 after he confessed to selling n
2007年VOA标准英语（七月）