As the audience got larger, thetechnology got better. Television sets became more reliable through the 1960s. The reception (接收效果)improved. The picture improved. The major networks started broadcastingprograms in color.

    Even greater improvements were comingaccording to Sanford Brown, who wrote an article for the Post in 1967.Surprisingly, just about every prediction he made in the article became areality. For example: All sets in the not-distant future will be colorinstruments. He also predicted that TV sets would become smaller, simpler, morereliable and less expensive and may forever put the TV repairman out of work.Smaller sets do not, of course, mean smaller screens. TV engineers expectscreens to get much bigger. However, today's 3-D TV is even farther away, if it's coming at all. There is some doubt whether the public would be eager topay for it, in view of people's cold reception given to 3-D movies.

    But the technology with the greatestpotential, according to Brown, was cable television (有线电视), whichwas still in its early stages then. As he predicted, the future of cabletelevision was highly interactive (互动的). It wasn't cable television that gaveAmericans their electronic connection to the world, however. It was theInternet. He even foresaw the future office: using picture phones, big-screentelevisions for conferences, and computers providing information at the touchof a button.

    Brown ever said, “The future oftelevision is no longer a question of what we can invent. It's a question ofwhat we want.”

    We may not be aware of it, but ordinary family homes in the U.S. and the rest of the world are not energy-efficient.

    Most of their energy goes to heating and cooling, and a lot of it is wasted, as warm air and cool air escape through fireplace chimneys and thin or poorly fitting windows and doors. A passive house loses almost none."Imagine a thermos(保温瓶),"said housing developer Brendan O'Neill."You have insulation(隔绝) everywhere, and it's basically completely sealed. And so the idea is to build a house like a thermos. So the windows are sealed. There's insulation completely surrounding the building. We make it as sealed as possible."

    A 147-square-meter passive house, presented by O'Neill Development Corp. as a demonstration unit just outside Washington, was brought to the site in two boxes. "Once it's set and put together, it takes about four weeks to complete the outside construction, to put down carpets," O'Neill said. "If everything is set in place, you put a house like this together in about four months.”The total cost of building it was $325,000, or about 17 percent more than constructing an ordinary house. But its utility(公用事业) bill is only around $20 monthly, or one-tenth the amount for the average house of the same size.

    While passive houses have been around for a long time, the idea has never taken root in the U.S. There was no driving force to push it.

    However, David Peabody, an architect who designs passive houses said, "I think climate change is now becoming a larger issue. And I think building standards are catching on to that. So people are becoming more aware of energy."Peabody said the cost of building passive houses could come down."What really makes sense for truly affordable housing," he said, "is to build multi-storey buildings."

    Doing voluntary work abroad is a great way for you to learn about service learning and know better about the world and different cultures. Visit our websites for further details.

Global Vision International

    Experience everything in our adventure when you join us in a team of international volunteers under 18. Assist with the projects that will benefit poor children's development and education. Discover the area's splendid beaches, explore beautiful jungles and immerse(沉浸)yourself in the friendly local culture.

    Cost: $2,990             Tel: 1-888-653-6028       Email: info@guiworld.com

    Website: www. Volunteer and Adventure Experience in Costa Rica. Com

Broadreach Summer Adventures

    Since 2993, Broadreach has taken over 12,000 students on their worldwide summer adventure volunteer programs for middle school, high school students. Their 75+ program offerings include marine biology, sailing, medicine, culture, arts, community service and leadership adventures. Programs are located in 40 +countries.

    Cost: Staring at $3,880          Tel: 919-256-8200

   Email: info@ gobroadreahc. Com   Website: www. gobroadreach. com

Cross-Cultural Solutions

    CCS teen summer service trips are for high school students aged 15-17. The High School Volunteer Abroad program offers you an awesome opportunity to volunteer side-by-side with local people. You can also meet new friends on a teens-only group volunteering project in Costa Rica, India, Peru, Ghana, and so on. You'll participate in many cultural activities during the week and on weekends.

    Cost: Contact us for pricing and availability

    Tel: 1-800-380-4777

    Email: info@crossculturalsolutions.org

    Website: www. crossculturalsolutions. Org
United Planet

    United Planet offers volunteer abroad programs in four destinations for those under 18. Volunteers may work in nursing home, Community Service Stations or in environmental conservation projects. Destinations include Romania, Peru, Ecuador and Chile. Candidates 16 years and older can apply.

     Cost: According to the length of your stay   Tel: 617-267-7763

    Email: quest@unitedplanet. org            Website: www. unitedplanet.org

    My violin is like a soul mate that whispers words of wisdom to me. Together, we've gone through both tears and happiness.

    About 12 years ago, I made acquaintance with it following an order from my mom. Many hours of boredom were spent practicing it. And to make things worse, the disappointment in my teacher's eyes as I played the wrong notes was like an invisible（隐形的）hammer, striking on my heart. One day, I finally decided: I hate it!

    By chance, things changed when I was seven. I was at home lying on the sofa, wondering how those famous violinists dealt with this terrible dilemma. I searched online for the E-minor Concerto, a well-known violin work by German composer Felix Mendelssohn, and listened to it.

    A beautiful and mysterious sound came from the violin as the bow moved across it. It was like the music slid over the flowers, rose up, and started to fill the air. The violin's voice woke up the sun, made the trees green, and freshened the air. As the music changed, the sky turned back to gray. A gloomy shade covered the grass as all the sunshine disappeared. I could hear children crying and men shouting. It was like an invisible claw had grabbed my heart tightly, making it unable to beat.

    That glorious day set off my passion and interest in violin - I grabbed mine and never let it go. Before the memories faded, I stared at my instrument. Without hesitating, I picked it up, rosined（用松香擦）the bow, and began to play. Peace filled my heart.

    My violin has been by my side for 12 years. When I feel happy, an energetic tune makes it even better; when I'm deep in sorrow, a peaceful tune washes it away, when I'm walking on air, feeling especially pleased with my achievements, solemn（庄严的）tunes calm me down. Gradually, it has become a part of my life.

    My violin, shall I compare you to a summer's day?

    As long as people have been telling stories, crones(丑陋的老太婆)have been scaring the wits out of children. "Nags(怨妇),witches, evil stepmothers, cannibals(食人妇). It's quite dreadful," says Maria Tatar, who teaches a course on folklore and mythology at Harvard. "But old women are also powerful—they're often the ones who can work magic." In the Disney film Snow White, there's a scene in which the beautiful, charming, wicked queen turns into an old hag and poisons Snow White so she'll sleep forever. The old lady in Hansel and Gretel wants to roast children in her oven and the witch in The Little Mermaid cuts out Ariel's tongue.

    Tatar says old women villains (恶人)are especially scary because，historically, the most powerful person in a child's life was the mother. "Children do have a way of splitting the mother figure into...the evil mother—who's always making rules and regulations, policing your behavior, getting angry at you—and then the kind mother—the one who is giving and protects you, makes sure that you survive."

    Veronique Tadjo, a writer who grew up in the Ivory Coast, thinks there's a fear of female power in general. She says a common figure in African folk tales is the old witch who destroys people's souls. Still, they're not all bitter and evil hags. Elderly women in folk tales often use their knowledge and experience of the world to guide the troubled protagonist(主人公). Tadjo points to the Kenyan story Marwe In The Underworld about a girl who commits suicide by drowning herself and enters the Land of the Dead where she meets an old woman. "That old woman teaches her quite a lot of things," Tadjo says. "And also, when Marwe starts longing for the world of the living, she helps her go back to the surface with a lot of riches. And we understand that Marwe has been rewarded for her goodness." In other words: Do your chores and you'll be rewarded. The point of these ancient tales, no matter what continent they come from, may have been to scare children into behaving.

    Perhaps the scariest old woman character—the ugly Baba Yaga—comes from Russia. She's bony with a hooked nose and long, iron teeth. Her hut(小屋)stands on chicken legs and she kidnaps children and eats them. Safe to say Baba Yaga has been making Eastern European children sleepless for centuries. In one interpretation, a mean stepmother sends the young girl Vasilisa to Baba Yaga's hut in the woods to get a candle. The girl is sure she's being sent to her death. Baba Yaga forces her to cook and clean, and Vasilisa does everything she's told. In the end, the old crone gives her what she needs and sends her home. "You see this kind of double face of the hag,"Maria Tatar says. "On the one hand: aggressive, threatening. And on the other hand: sometimes to make sure that there is a happily ever after."

    There's that power again. In Japanese folklore, the Yama Uba(山姥)is an equally ambiguous old woman. She's a mountain witch who, like Baba Yaga, lures people into her hut and eats them. But she'll also help a lost traveler. Noriko Reider is a professor at Miami University of Ohio who's done extensive research on Yama Uba stories. "She brings fortune and happiness," Reider says. "She can also bring death and destruction for those who are not very good."

    According to Cuban-American writer Alma Flor Ada, in Hispanic(拉美地区的)culture old women are multi-talented. Ada is co-author of Tales Our Grandmas Told, which includes a story about Caliph's son who becomes seriously ill. After "all of the best physicians in the land" fail to cure him, Caliph sends his messengers searching for help. Then one morning, an old woman arrives with this advice: To get well, the prince must wear the overcoat of a man who is truly happy. And of course it works.

It's 1:30 am in Kenya's populated north, and 50 people are lying on their backs on the shore of a dried-up river, staring up at the night sky. These stargazers have travelled 250 miles to Samburu to witness the Perseid meteor shower(英仙座流星雨). They are not disappointed: Every few minutes, arrows of light shoot across the sky like silent fireworks.

The Star Safari is organised by a Kenyan astronomer, Susan Murabana, who has brought a 50 kg,170 cm-long telescope to allow the group to view Mars and deep-sky objects. But here in Samburu, where light pollution is minimal, the Perseid meteors—visible with the naked eye (裸眼)—steal the show.

Every two months, Murabana and her husband load their telescope on to the roof of their 4×4 and set off to rural communities, where they give up to 300 children a chance to view the planets and learn about constellations (星座) and the basics of astrophysics. They primarily targets schools in remote areas because of her mission to give girls an opportunity that she wishes had been available to her.

"When I started this work, I didn't see people who looked like me. I was a lone ranger and I wanted to change that." says Murabana.

"There is a common misconception in Kenya that astronomy in general is hard, boring, and only for boys," she adds. "I'd like to teach young girls that astronomy is neither of these things and that they, too, can become astronomers," says Murabana.

Murabana's passion for astronomy began in her early 20s when her uncle invited her to join a similar outreach session organized by the Cosmos Education. "That was a gamechanger. If an outreach group had come to me when I was a young teenager, my attitude towards a career in astronomy would have been positive. I ended up studying sociology and economics, but maybe I would have desired to be an astronomer," she says.

Inspired by the Cosmos Education, Murabana completed an online master's degree in astronomy with the James Cook University in 201l and set up her own outreach programme. She looked to Dr Mae Jemison, the first black woman in space, as a role model. "I hope that one day, through this work, I will spark a chain reaction that leads to the first African woman in space."