SSS 2010-12-27

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? As a bitter winter storm rages on the east coast, it's hard to knock being warm-blooded. But what about the metabolic cost of maintaining a high body-temperature? Well,

VOA慢速英语20060124b

SCIENCE IN THE NEWS - Spacecraft Comes Home With Stardust Memories of the Solar SystemBy Caty Weaver, Brianna Blake and George Grow Broadcast: Tuesday, January 24, 2006 (MUSIC) VOICE ONE: This is SCIE

Day-Old Mice Grow Back New Heart Tissue After Injury

When humans have a heart attack, heart muscles die after being cut off from their blood supply. But what if the heart could grow new muscle to replace the dead tissue? Some amphibians can regrow body parts, even entire limbs. But humans and other hig

SSS 2012-02-22

This is Scientific American 60 second science, I am Christopher Intagliata, got a minute? The most common types of ingested birth control contain estrogen. But the hormone doesnt just prevent human babies. It may be lowering numbers of frog babies, t

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Lesson 154 Part Ⅰ Warming-up Exercises Spot Dictation: A Successful Teacher A: Do you think anybody can be trained to be a teacher ...? B: No. A: Or do you think ... B: No, I don't. I think it's a .

英语听力：探索发现 2013-01-02 冰河新新州 Ice Age Oasis—9

The cold climate conifer forests of the north displaced broadleaved woodlands. Plants and animals were gradually pushed south to find a warmer climate. Florida became a refuge from the cold. Down here is where the Ice Age north met the subtropical so

托福听力短文 I-14-2

(woman) Before I tell you about the interesting discovery related to Tyrannosaurus rex, I need to review something we studied last semester --- the difference between what are commonly called cold-blooded and warm-blooded animals. In warm-blooded an

'Cold Feet' and Other Cold Body Expressions

And now, the VOA Learning English program Words and Their Stories. Cold weather has a great effect on how our minds and our bodies work. Perhaps that is why we have so many expressions that combine the word cold with body parts. The most straightforw

SSS 2012-03-19

This is Scientific American 60 Second Science, I am Christopher Intagliata, got a minute. Scientists discover new species all the timeon the order of 15,000 a year. One of the latest additions to the tree of life is a new type of leopard frog. Which

VOA慢速英语2013 北极冰融化的代价

AS IT IS 2013-08-09 The High Price of an Arctic Ice Melt北极冰融化的代价 From VOA Learning English, welcome to As It Is. Im Caty Weaver. On todays show we talk about the moon and sleep, as well as pesticides in Pacific chorus frogs. But we fi

VOA慢速英语--词汇典故:文艺复兴时期的人

The World Needs More Renaissance People 词汇典故:文艺复兴时期的人 Hello and welcome to Words and Their Stories. Each week we report on words and expressions commonly used in American English. Today, we talk about people who can do many th

VOA标准英语2012--Reptiles, Amphibians in US Succumbing to Deadly Ranavirus

Reptiles, Amphibians in US Succumbing to Deadly Ranavirus Tracking the virus A few years ago, Scott Farnsworth, a graduate student at Towson University in Maryland, was sent to a wooded park in Maryland to relocate box turtles safely away from a new

万物简史 第491期:多灾多难的生命进程(11)

But come we did, though reaching our present state of eminence has not of course always been straightforward. 但是，我们毕竟还是来了，虽然达到我们目前这样的卓越状态肯定不总是一帆风顺的。 Since life on land began,

英语听力：自然百科 蛙之殇（二）

Id say the most amazing footage we were lucky enough to shoot was done in Panama. We were out in the forest and we found an egg clutch with a male frog guarding his tadpoles which was really amazing. So Andy Young, the wonderful cinematographer who s

英语听力：自然百科 蛙类拯救阿根廷？

In Argentina, the small city of San Luis is adopting the frog as its provincial hero. Frogs have been touted by some as the antidote to a dengue fever outbreak that's gripped Argentina. There have been over 20,000 cases recorded this year, including

经济学人145:不是扁平足而是八字足

Science and technology 科学与技术 Splay-footed, not flat-footed 不是扁平足而是八字足 A new fossil shows that evolution does not always mean change 新发现的化石显示，进化并不总意味着变化 Palaeontology 古生物学 The

警报！ 过去40年野生动物数量减半

From the forest elephants of Africa, to Indias tigers and even our own harbour seals, wildlife is losing the battle for survival all over the world. 无论是非洲森林象、孟加拉虎（又名印度虎）还是斑海豹，世界上所有的野生动

英语杂谈：15 New Species

Researchers working for the World Wildlife Fund have warned that the effects of climate change pose a serious threat to rare species of wildlife discovered within the past year in Southeast Asia, including a fanged frog and a leopard-striped gecko. A

Humans Need More Sleep in the Winter: Say What?

Humans Need More Sleep in the Winter: Say What? During this time of year, its hard to not be jealous of the various squirrels, hedgehogs, possums, chipmunks, bats, skunks, lemurs, and other small mammals that lower their body temperatures and their m

Mexico to better monitor endangered flora and fauna

MEXICO CITY, May 18 (Xinhua) -- The Mexican government signed an agreement with the non-governmental group TRAFFIC on Tuesday to exchange information about illegal seizures of flora and fauna species in Mexico. The agreement with the wildlife trade m