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Scientists at the Massachusetts Institute of Technology (MIT) have created what could be a breakthrough in providing clean, alternative energy. Researchers have invented an artificial leaf that splits water into hydrogen and oxygen and stores the ene

20 The Historical Significance of American Revolution

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Todays episode concerns a what-you-may-have-been-wondering-about topic. That sure was a mouthful, and it illustrates the problem of stacked modifiers, which occurs when you string together too many words to describe a noun at the end of the mouthful.

60秒科学:Artificial Muscle Brings Back Blink

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VOA慢速英语2011--How Much Should a Teacher's Job Depend o

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英语语法：50 Funny Misplaced Modifiers

Grammar Girl here. Today guest-writer Bonnie Trenga is going to help us take a break from serious grammar and instead delve into the world of comedysome intentional, some not. Groucho Marx said it best: One morning I shot an elephant in my pajamas. H

2007年VOA标准英语-Former CIA Officer Testifies White House 'Reckl

By Dan Robinson Capitiol Hill 16 March 2007 Former undercover CIA officer Valerie Plame, who has been at the center of a controversy involving the role White House officials played in revealing her identity, has testified in public for the first tim

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By Kurt Achin Seoul 28 June 2006 World leaders have expressed concern for weeks over the possibility of a North Korean missile test. Beyond satellite images of the missile launch base, however, relatively little is known about Pyongyang's prospectiv

VOA标准英语2009年-Obama's Leadership Style Put To Test

U.S. President Barack Obama has been in office two months now, and the ongoing economic crisis is putting his leadership skills to the test. President Barack Obama makes a statement on AIG, on the South Lawn of the White House in Washington, 18 Mar

VOA标准英语2011--Doctors Achieve Milestone Using Artifici

Doctors Achieve Milestone Using Artificial Heart With No Beat In March, two doctors at the Texas Heart Institute in Houston achieved what medical experts call a major milestone by implanting a continuous-flow artificial heart in a human patient. The

Artificial Leaf Turns Sunlight into Electric Power

Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani

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By Al Pessin Honolulu, Hawaii 20 October 2009 Command of U.S. forces in Asia and the Pacific and Indian Oceans passed to a new commander on Monday at a ceremony in Honolulu, Hawaii. Navy Admiral Robert Willard said the U.S. commitment to the region

英语语法：70 Misplaced Modifiers

Grammar Girl here. Today's topic is misplaced modifiers. Of all the writing errors you can make, misplaced modifiers are among the most likely to confuse your readers, but they're also kind of fun because misplaced modifiers can give your sentences s

2006年VOA标准英语-Experts Still Working on North Korean Nuclear C

By Al Pessin Pentagon 10 October 2006 The U.S. Defense Department says it is still evaluating data from the explosion and small earth tremor in North Korea on Monday to determine whether it was in fact an underground nuclear test, as the North Korea

学个词Learn a Word 第785期 No-brainer

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每日一词【785】no-brainer：很容易做

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揭秘新科技 Wifi信号能治病

Researchers have developed a method to activate electronic implants in the body and eliminate bacterial infections using a wireless signal。 研究者已经开发了一种运用无线信号激活人体中电子植入物来消除细菌感染的方法。

Wifi信号弱？放置地点有问题

Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe

US Identifies Marines in Urination Video

U.S. military officials say they have identified the four Marines seen on video urinating on the bodies of dead Afghan Taliban fighters. The Naval Criminal Investigative Service, heading the main inquiry into the video, has also reportedly questioned

VOA标准英语2010年-New Negotiations Aim at Cyprus Reunifi

Leaders of the Greek and Turkish communities of Cyprus are starting a new series of negotiations aimed at re-unifying the divided island. Cypriot President Demetris Christofias and Turkish Cypriot leader Mehmet-Ali Talat have begun a series of three-