Energy independence. It has a nice ring to it. Doesn't it? If you think so, you're not alone, because energy independence has been the dream of American president for decades, and never more so than in the past few years, when the most recent oil price shock has been partly responsible for kicking off the great recession.

    “Energy independence” and its rhetorical (修辞的) companion “energy security” are, however, slippery concepts that are rarely though through. What is it we want independence from, exactly?

    Most people would probably say that they want to be independent from imported oil. But there are reasons that we buy all that oil from elsewhere.

    The first reason is that we need it to keep our economy running. Yes, there is a trickle（涓涓细流）of biofuel available, and more may become available, but most biofuels cause economic waste and environmental destruction.

    Second, Americans have basically decided that they don't really want to produce all their own oil. They value the environmental quality they preserve over their oil imports from abroad. Vast areas of the United States are off-limits(禁止) to oil exploration and production in the name of environmental protection. To what extent are Americans really willing to endure the environmental impacts of domestic energy production in order to cut back imports?

    Third, there are benefits to trade. It allows for economic efficiency, and when we buy things from places that have lower production costs than we do, we benefit. And although you don't read about this much, the United States is also a large exporter of oil products, selling about 2 million barrels of petroleum products per day to about 90 countries.

    There is no question that the United States imports a great deal of energy and, in fact, relies on that steady flow to maintain its economy. When that flow is interrupted, we feel the pain in short supplies and higher prices, At the same time, we derive(得到，获得) massive economic benefits when we buy the most affordable energy on the world market and when we engage in energy trade around the world.

    Several months ago, I attended the opening event for a new children's literacy (读写能力) campaign at the Burbank Library in California. The campaign is called Marvel Comics Close- Up, aimed at using comic books to encourage kids to read. Disney and Marvel donated 210,000 books to libraries and schools across the country.

    Stars from Disney XD participated. They read Spider-Man comic books to 70 kids from Boys & Girls Clubs in southern California. The stars included Drake Bell (Ultimate Spider-Man), Dylan Riley Snyder (Kickin' it), Olivia Holt (Kickin' It) and Coie Jenson (Crash & Bernstein).

    Drake Bell said that the Marvel reading campaign is aimed at kids who are bored with books, believing comic books are the answer for kids who say they'd rather play video games. “Comic books really get you into the story,” he told TFK(Time For Kids). “They are not just words or pictures on a page.”

    Dylan Riley Snyder knows from his experiences that comic books have the power to inspire kids' imagination. His mom was a teacher and she used comic books to interest students who thought they weren't interested in reading. Dylan attended these classes. He would read the comic books and draw the characters along with the students. “It was a great way for these kids to start to enjoy reading,” Dylan said. “That's how I got interested in reading too. Now I can share my love for comic books with others through the Marvel Comics Close-Up program.”

    David Levine is the Vice President of Disney XD Worldwide. He said great stories and great characters, like Spider-Man and The Avengers, were key to making reading fun. “Reading can encourage you to explore new things and take you to all sorts of exciting places,” he told TFK.

    Measles (麻疹), which once killed 450 children each year and disabled even more, was nearly wiped out in the United States 14 years ago by the universal use of the MMR vaccine (疫苗). But the disease is making a comeback, caused by a growing anti-vaccine movement and misinformation that is spreading quickly. Already this year, 115 measles cases have been reported in the USA, compared with 189 for all of last year.

    The numbers might sound small, but they are the leading edge of a dangerous trend. When vaccination rates are very high, as they still are in the nation as a whole, everyone is protected. This is called "herd immunity", which protects the people who get hurt easily, including those who can't be vaccinated for medical reasons, babies too young to get vaccinated and people on whom the vaccine doesn't work.

    But herd immunity works only when nearly the whole herd joins in. When some refuse vaccination and seek a free ride, immunity breaks down and everyone is in even bigger danger. That's exactly what is happening in small neighborhoods around the country from Orange County, California, where 22 measles cases were reported this month, to Brooklyn, N.Y., where a 17-year-old caused an outbreak last year.

    The resistance to vaccine has continued for decades, and it is driven by a real but very small risk. Those who refuse to take that risk selfishly make others suffer.

    Making things worse are state laws that make it too easy to opt out (决定不参加) of what are supposed to be required vaccines for all children entering kindergarten. Seventeen states allow parents to get an exemption (豁免), sometimes just by signing a paper saying they personally object to a vaccine.

    Now, several states are moving to tighten laws by adding new regulations for opting out. But no one does enough to limit exemptions. Parents ought to be able to opt out only for limited medical or religious reasons. But personal opinions? Not good enough. Everyone enjoys the life-saving benefits vaccines provide, but they'll exist only as long as everyone shares in the risks.

    Michelle Kwan was born on July 7, 1980, in Torrance, California. The daughter of Hong Kong immigrants (移民), Kwan watched her older brother play ice hockey as a kid. She began skating when she was five, and entered and won her first figure skating competition at seven. She won the world title in the 1994 World Championships at the age of 13, and earned a spot as an alternate (候补者) for the 1994 Olympic Games. Kwan went on to capture the world title in 1996, 1998, 2000, 2001 and 2003.

    At the Nagano Winter Olympics in 1998, Kwan was believed to win gold, but ended up with a disappointing silver medal when fellow US skater Tara Lipinski surprisingly took first place. Shortly before the Salt Lake City Winter Olympics in 2002, Kwan, who was then the reigning world champ, surprisingly fired both her choreographer (编舞者), Lori Nichol, and longtime coach, Frank Carroll. Once again, she failed to get the gold medal when she finished third behind Irina Slutskaya of Russia and US skater Sarah Hughes, who took first.

    As a student at the University of California at Los Angeles, Kwan has continued to compete since her defeat (战败) in Salt Lake City. In February 2006, she was unable to take part in the Olympic Games in Torino, Italy because of a serious injury. Though Michelle Kwan did not compete during the 2006－2007 figure skating season, she has turned down an offer to work for NBC Sports and says she is not retiring.

    My kids lifted the Christmas ornaments (饰品) out of a wooden box in Gee's living room. They were so happy and excited to see tiny stuffed cats and cartoon characters. Gee stood beside them, quietly explaining each treasure. She told me that she and Tom built their Christmas ornament collection piece by piece each year. She smiled as we left with the box, because her precious heirlooms, gathered over a life time, had found a new home.

    We first met Tom and Gee in the early days of our marriage. Someone had been returning our garbage cans to the garage, and Jim and I had wondered who One day we spotted him: a man who lived across the street. I baked cookies and left them on a bench outside the garage with a thank-you note. We then found a typed letter from Tom, explaining that he had begun returning cans for people he hardly knew, because neighbors had done this for Gee when he was in hospital. Now he paid it forward by doing the same for all of us.

    A few years after we'd moved in, Tom died, much to our sorrow. Gee told us she still talked to Tom every day. When we left her house with the precious box, I realized how hard it must be for Gee to part with that box, a piece of Tom.

    These days, we're planning a move. The house that seemed so huge six years ago is filled with furniture, books, toys and, of course, people. We know it's time to go, but soon realize gaining a third bedroom seems like a bad trade for all we stand to lose.

    This Christmas, we'll decorate our tree with Gee and Tom's ornaments. Maybe I'll talk to Tom just as Gee still does. Thank you, I'll say For teaching us what it means to be a neighbor.

Tonya, Elsa and Mark are students at SAR Senior High School in New York City. It's a school with regular academic(学术的)classes, but it also gives special attention to the performing arts. Tonya likes dancing, Elsa wants to be an artist and Mark is a singer. 

The students are all 15,and they're in the 10th grade. They study subjects like English, maths, and science. They also choose a foreign language. Students have many academic classes, but during the school day they also take classes in the arts, like dance and music. 

There are even more activities for SAR students after school. There are more than 40 clubs for students. For example, there's a movie club, a music club and an environmental club. "We have so many choices to select," says Tonya. "I like taking photos. It's a so a great way to meet people with common interests. "

Students at SAR can also do many sports. For example, they can play basketball, tennis, volleyball and soccer. Students practice them after school. They compete against other high schools. Mark says, "At school, I study by myself. I'm a singer, and I do that alone, too. That's why I like playing on the basketball team. We work together and compete against other teams. "

SAR offers various great classes, clubs and sports to students. Students at SAR get a good education and they also develop their own interests. Many SAR students become dancers, singers and actors!