美国国家公共电台 NPR A New Kind Of March Madness Hits Schools

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Lesson 18， Hot Animals Around the World： The Koala 世界热门动物：无尾熊 Why are all those people standing in line in the hot sun at the zoo？ Maybe the zoo just opened a koala exhibit. With the suvival rate of native Australian koalas on the rise

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Megan loved bears more than anything else in the whole world. She had a polar bear, a grizzly bear, a panda bear, and even a koala bear. She had other animals too, but it was only the bears that got to sleep in Megans bed at night. Each night before

SSS 2009-08-24

Two years ago, Duke University Medical Center researchers said that the supposedly useless appendix is actually where good gut bacteria safely hide out during some unpleasant intestinal conditions. Now the research team has looked at the appendix ove

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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? Quality truffles can sell for more than a $1000 a pound. Theyre also valuable in environmental research, work thats discussed in an article called The Hidden Life of Tru

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美联社新闻一分钟 AP 2013-10-21

1. The White House says a Senate-backed deal to reopen the government and raise the debt ceiling achieves what's necessary. The deal would reopen the government through at least January 15th and the nation's borrowing authority would be extended thro

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VOA标准英语2008年-Australian, US Scientists Bring Extinct Gene Ba

By Phil Mercer Sydney 21 May 2008 Australian and U.S. scientists have successfully inserted a gene from the extinct Tasmanian tiger into a mouse embryo. They say the result has been bone and cartilage from the extinct marsupial developing inside the

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VOA常速英语2007-Captive Breeding Program a Boost to Ailing Tasma

By Phil Mercer Sydney 23 October 2007 Australian researchers are teaming up with zoos and wildlife parks around the world in a bid to save the Tasmanian devil. It is the largest carnivorous marsupial and is being devastated by a mysterious facial tum