466
자전거로 출근하기
More Americans than ever are riding their bicycles to work instead of driving. They are doing this because of gas prices, a slowing economy and concerns about the environment.
458
조폐
Guided tours of the Bureau of Engraving and Printing in Washington D.C. are a popular activity for visitors. These tours are a good way to learn new and interesting facts about the history of money and its complex production methods.
456
서커스
During the civilization of ancient Rome, the circus was a building for large events. These included horse racing, athletic competitions and wild animal hunts.
454
스쿠버 다이빙
The word "scuba" stands for self-contained underwater breathing apparatus. Knowing how to dive opens up an entire underwater world of coral, fish, and other creatures.
452
스테이케이션
One smart way Americans are avoiding such high costs is by taking vacations at home instead of driving or flying to faraway places. Staycations make hotels, long drives and airline flights unnecessary.
450
모유 은행
Money, jewels and important documents may not be the only valuables placed in banks these days. Some mothers are making deposits, or really, donations, to breast milk banks.
446
더 록
Alcatraz Island is in the harbor of San Francisco, California. It is best known for being a federal prison, which was also called “The Rock.” It was once the most famous prison in America.
444
종이 만들기
The earliest process of making paper was done almost five thousand years ago in Egypt and the Nile Valley. In those days, paper was made from strips of the papyrus plant.
442
어메리칸 드림
Each individual may define the American dream differently. But the general idea is that a person in the United States has the freedom to carry out his or her goals.
440
석 잔의 차
A book called "Three Cups of Tea" has been on the best seller lists in the United States for more than a year. It has sold more than one million copies. The book tells the true story of how one person can make a difference in the lives of many people.