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By Scott Bobb Johannesburg 24 March 2008 As the world marks international Tuberculosis day, a new study has revealed a frightening rise in the past 15 years in tuberculosis cases in Africa. Correspondent Scott Bobb reports from our Southern Africa Bu
VOA标准英语2008年（三月）
BOB DOUGHTY: This is SCIENCE IN THE NEWS, a program in VOA Special English. Im Bob Doughty. SHIRLEY GRIFFITH: And Im Shirley Griffith. Today we tell about the development of what scientists are calling a synthetic cell a cell produced by people inste
2010年VOA慢速英语(七)月
By Scott Bobb Johannesburg 29 November 2006 As people around the world mark World AIDS Day, December 1, the government of South Africa is to announce an ambitious five-year plan to combat the disease, which is estimated to infect 11 percent of the p
2006年VOA标准英语（十一月)
South Africas national government protocol requires state health facilities to provide antiretroviral medication to ill, HIV-infected people. However, independent health groups continue to receive reports of HIV-infected people dying because certain
VOA标准英语2009年(十一月)
AILSA CHANG, HOST: Former South African President Nelson Mandela would have been 100 years old tomorrow. He died in 2013, and a new book is marking his centennial. It's called The Prison Letters Of Nelson Mandela. These deeply personal letters were c
2018年NPR美国国家公共电台7月
US scientists have stripped life back to its bare essentials creating a synthetic microbe with the absolute minimum genetic information needed to grow and reproduce. 美国科学家将生命的多余部分剔除，只留下最基本的要素，由此创
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