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[时差N小时] 时差N小时:最危险的物种,人类
What would you say is the deadliest animal on earth—the most dangerous, brutal, destructive? The wolf? The tiger?&n2012-10-11 编辑：melody
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[时差N小时] 时差N小时:果胶是什么 What is jello?
It's pretty easy to guess what most of your food is made of. The meat in your hamburger probably came2012-09-26 编辑：melody
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[时差N小时] 时差N小时:致命的糖 Death by Sugar
Some methods of preserving food are easy to understand. For example, it's easy to see that freezing your f2012-09-28 编辑：melody
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[时差N小时] 时差N小时:儿童劳动法 Child Labor Laws
Child Labor Laws-Today on Congressional Moment：Over a hundred years ago the Industrial Revolution quickened the pace of&2012-10-10 编辑：melody
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[时差N小时] 时差N小时:音乐家能够更好地辨认情感
Don: Hi Yael, what's up?唐：嗨，雅艾尔，有什么事吗？Yael: Well Don, I just got off the phone with my friend. She's had&nb2012-09-29 编辑：melody
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[时差N小时] 时差N小时:爆米花为什么会爆?
Popcorn, like all grains, contains water. About thirteen and a half to fourteen percent of each kernel is made2012-10-09 编辑：melody
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[时差N小时] 时差N小时:双语教育 Bilingual Education
Bilingual Education, a work in progress—Today on Congressional Moment. By the time the 13 British colonies declared2012-10-12 编辑：melody
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[时差N小时] 时差N小时:淘汰红发 Knocking Out Redheads
Don: Hey Yael, did you know that people with red hair need more anesthesia during surgery than other people?唐：2012-10-15 编辑：melody
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[时差N小时] 时差N小时:可逆性痴呆 Reversible Dementia
Dementia is a scary word. So is senile. Both words conjure up images of being helpless in old age, of&nbs2012-10-17 编辑：melody
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[时差N小时] 时差N小时:年龄歧视 Age Discrimination
The average life expectancy for Americans was 35 years when the country was founded, and has been rising stead2012-10-16 编辑：melody
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[时差N小时] 时差N小时:枪械管制 Gun Control Act
The debate over gun control in America has been ongoing and intense for many years — with proponents seeking&n2012-10-19 编辑：melody
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[时差N小时] 时差N小时:空气洁净法令
The first time Congress dealt with any issue pertaining to unclean air was in 1955. Prior to that, states2012-10-18 编辑：melody
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[时差N小时] 时差N小时:红色,蓝色和一个更高效的你
Don: Is it true that certain colors affect how we think and behave, or how we perform at work?唐：某种特定的颜色会影响我们的思2012-10-23 编辑：melody
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[时差N小时] 时差N小时:为什么要流眼泪?
You notice your tears most after a good cry or while slicing an onion, but actually your eyes are constan2012-10-25 编辑：melody
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[时差N小时] 时差N小时:树根及其真菌好友
If I told you there was a large mass of fungus infecting the roots of that lovely pine tree which sh2012-10-24 编辑：melody
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[时差N小时] 时差N小时:信息自由法令 The Freedom of Information Act
The Freedom of Information movement began in earnest in the 1950s. After WWII, the extent of government secrecy&nbs2012-10-26 编辑：melody
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[时差N小时] 时差N小时:医疗法案 Medicare Act
By the early 1950s, it was becoming apparent that a growing number of elderly Americans had no economic protec2012-10-31 编辑：melody
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[时差N小时] 时差N小时:美国国家癌症法案
During the first 30 years of the 20th century, America became a safer and healthier place. Living conditions i2012-11-01 编辑：melody
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[时差N小时] 时差N小时:移民改革 Immigration Reform
"Give me your tired, your poor...your huddled masses yearning to breathe free...挤在一起渴望自由呼吸的大众，那熙熙攘攘的被遗弃了的，可怜的人们。把这些无家可归的，饱受颠沛的人们一起交给我...Thes2012-11-05 编辑：melody
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[时差N小时] 时差N小时:职业安全与健康法
Congress first dealt with issues of safety and health in the workplace in 1890, when legislation was passed fo2012-11-06 编辑：melody
