SSS 2011-10-07

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

SSS 2012-05-02

This is Scientific Americans 60 Second Science, I am Rose Eveleth. Got a minute? Sound and touch may seem completely separate, except possibly when playing the game Operation. But it turns out that the two senses are actually quite entwined: a new st

NPR 2008-11-04

The presidential nominees have been dashing through key battleground states and hammering familiar campaign things on this final day before the election. John McCain had seven states on his itinerary. Barack Obama had three. During their all-out pus

NPR 2010-03-09

The Justice Department has unsealed terrorism charges against the man who has been linked to a Somali terrorist group called Al-shabaab. Authorities say he had bomb-making instructions in his possession when he was arrested. NPRs Dina Temple-Raston r

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VOA慢速英语 2008 1104b

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Barbara Klein. This week, we will tell about mammal populations in danger of disappearing. We will also tell about one kind of animal that disappeared

VOA慢速英语 2008 0416a

This is the VOA Special English Health Report. Researchers in China have reported on a rare human-to-human case of bird flu. They say it is likely that a twenty-four year old man in the eastern province of Jiangsu infected his father last December. T

VOA慢速英语 2007 1003a

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VOA慢速英语 2008 1008a

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