A man once said how useless it was to put advertisements in the newspapers．“last week, ”said he, “my umbrella was stolen from a London church．As it was a present, I spent twice its worth in advertising, but didn't get it back．”

    “How did you write your advertisement?” asked one of the listeners, a merchant．

“Here it is,” said the man, taking out of his pocket a slip cut from a newspaper．The other man took it and read, “Lost from the City Church last Sunday evening, a black silk umbrella．The gentleman who finds it will receive ten shillings on leaving it at No.10 Broad Street．”

    “Now, ”Said the merchant, “I often advertise, and find that it pays me well ． But the way in which an advertisement is expressed is of extreme importance．Let us try for your umbrella again, and if it fails, I'll buy you a new one．”

The merchant then took a slip of paper out of his pocket and wrote：“If the man who was seen to take an umbrella from the City Church last Sunday evening doesn't wish to get into trouble, he will return the umbrella to No.10 Broad Street．He is well known．”

    This appeared in the paper, and on the following morning, the man was astonished when he opened the front door．In the doorway lay at least twelve umbrellas of all sizes and colors that had been thrown, and his own was among them．Many of them had notes fastened to them saying that they had been taken by mistake, and begging the loser not to say anything about the matter．

    In 1972, a social worker named Sanjit "Bunker " Roy founded Barefoot College in Tilonia, Rajasthan. Today the college trains women from villages for six months to build and maintain solar panels and other instruments. Barefoot College also offers education to the younger generation both during the day and at its solar bridge schools that meet by lamp light at night.

    The philosophy of the Barefoot College is largely inspired by the principles of Gandhi, starting with quality beyond social classes, sex or religion. As a matter of fact, women are favorably regarded as an underserved population that is necessary to bringing villages together. Another central principle of the college is self-reliance, teaching students to support and think for themselves.

    After the colleges female students have completed their half a year of training, they return to their villages villages, where they wait for solar panel parts to arrive from the college. Once they have all the pieces they need ,they construct the panels and begin collecting solar energy. For each village, the college also provides solar lamps. Villagers can, in addition, order parts for other solar-powered devices, such as water heaters and cooking stoves. Once assembled(组装）, they and the lamps are powered by the solar panels.

    The effect on the villages is huge. Before the solar panels and lamps arrived, villagers had only candles to light their homes. This prevented adults from doing serious work at night, and it made studying difficult for children as well. As for physicians, they have difficulty treating patients and performing operations at night because they had to rely on flashlights.

    Now there is power for not only the electrical appliances that the college provides but also devices like televisions, radios and computers. For the first time, the villagers can even connect to the world through the Internet.

    Program fools humans

    Have you ever been so bored that you started a conversation with a “chatbot (聊天机器人)”? You probably discovered quickly that it wasn't much fun, because the things it says hardly ever make any sense and chatting with it doesn't provide the same kind of back-and-forth as a human conversation.

    That might have made you wonder: will a computer ever be able to talk like a human?

    That day is certainly getting closer now. A computer program named “Eugene Goostman” has successfully passed the Turing test – by fooling people into thinking it was a 13-year-old boy, reported AFP on June 9.

    While you may have never heard of the Turing test, it means a lot in the world of artificial (人工的) intelligence.

    According to USA Today, the test was first invented in 1950 by Alan Turing, a British computer expert best known for his code-breaking work during World War II. In his test, a group of human judges take turns having keyboard conversations for five minutes with two subjects – a human and a piece of computer software. If up to 30 percent of the judges fail to tell the two apart, the program is considered to have passed the test.

“If a machine is indistinguishable (无法区分的) from a human, then it could be said to be ‘thinking',” wrote Turing in his paper Computing, Machinery & Intelligence back in 1950.

    No computer had ever passed the Turing test before. But this time, Eugene Goostman, developed by two Russian scientists to simulate (模拟) a 13-year-old boy, managed to convince 33 percent of judges that it was human.

    Machines are close to “reaching the milestone of communicating with us in a way that we are comfortable with”, Professor Kevin Warwick of the University of Reading, UK, told The Telegraph. “This brings closer the time in which robots start to play an active role in our daily lives.”

    Some people feel a bit disturbed by the news. They worry that computers will outsmart humans in the near future and take over the world. But Warwick said that it is unlikely that this will happen any time soon. After all, computers have only just learned to have a five-minute conversation, while we humans can do so much more than that.

    Have you ever been to France before? It is not only a country of great food, fashion and art. It's also home to the most influential painters in the world.

    Edouard Manet

    He was one of the first artists to paint modern life. He began to paint in his own style, but still used some of Couture's techniques like thick lines and dark colors. He was greatly influenced by Claude Monet and Berthe Morisot, which can be seen in his use of light shades. Most of his paintings had scenes of daily life on the streets of Paris. His works include Olympia and The Absinthe Drinker.

    Camille Pissarro

    In his early years, Pissarro painted scenes of a river or a path from memory. After meeting Claude Monet and Paul Cezanne, who painted in a more realistic style, he changed his course to Impressionism. During his career, he experimented with various styles, and finally formed his own one. His works include Old Market at Rouen and Sunset at St. Charles.

    Vincent van Gogh

    He had a huge influence on art in the 20th century. His early works were most painted in somber tones. However, influenced by Monet, Pissarro, and Bernard, he adopted brighter colors in his works, and started creating his own techniques. Although he had produced more than 2,000 works of art, the artist sold only one painting during his lifetime — Red Vineyard at Arles. His works include The Potato Eaters, Starry Night and Bedroom in Arles.

    Claude Monet

    He was the founder of the Impressionist movement and completely changed the French painting in the 19th century. Although he first started by selling charcoal caricatures（木炭讽刺画）in Paris, he soon started painting with oil after meeting Eugene Boudin, who taught him to use oil paints and also encouraged him to paint outdoors. And then he painted with his own style. His works include Impression, Sunrise and The Water Liles.

    Eight years ago, Special Olympics Georgia Forsyth County was introduced to Britt Hall. Britt Hall is a Special Olympics Georgia athlete. "The first sport I started competing in with Special Olympics Georgia was softball. I was with the Forsyth Golden Gloves, and we were a pretty good team," said Britt as he looked back upon his first state game.

Since then, the athlete has competed in much more than softball. Britt has gone on to compete in bocce, basketball, athletics, table tennis, volleyball and flag football during his Special Olympics Georgia career (职业生涯). And he performed well in these games. "Athletics has always been one of his favorite sports to compete in," said Britt's father. "He likes the different competitions within athletics, especially the races (赛跑). "

    "I like athletics, but I am excited for flag football this year. We are going to play just as well as the Falcons," Britt said. This year, Britt and his teammates will be returning to Emory University as the Special Olympics Georgia Forsyth County Mean Machine, one of the two flag football teams from Special Olympics Georgia Forsyth County. Despite the word "mean" being in their name, Britt says that their aim is not to be mean to their competitors. "We want to win the gold, but we want to be nice to the other teams and encourage them. They are our friends and have worked just as hard as we have for the state competitions," Britt explained.

    While athletes are encouraged to try their very best and go for the gold, Special Olympics Georgia centers on sportsmanship and friendship during competitions. Britt has always been a good team player, but he is also very competitive. Special Olympics Georgia has helped him gain confidence as an athlete, which shows him how to cheer on his teammates and the opposing athletes.

    "I've learned a lot from being in Special Olympics Georgia. I think there is a lesson for everyone who competes," said Britt.

    Older women who walk a little over three kilometers each day might live longer than less active women of the same age, a new study suggests.

    Many Americans hoping to stay healthy set a daily goal of 10, 000 steps, or about eight kilometers. They often have this goal because they are wearing electronic devices which set that target, note researchers in the United States. Their findings appeared recently in the publication JAMA Internal Medicine.

    But it is not clear how much intensity(强度)or speed matter when counting the health benefits of every step, the researchers write. They add that 10,000 steps per day might not be the right goal for everyone.

    For the study, researchers observed 17,000 women, all in their early 70s. They asked the women to wear accelerometers for at least four days. Accelerometers are small devices that measure the number of steps and the intensity of movement. The researchers followed up with the women much later, around 4. 3 years later, on average. Since the beginning of the study, 504 women had died. Compared to women who took no more than 2, 718 steps daily, the women who took at least 4,363 steps per day were 41 percent less likely to die.

    "Even a modest amount of steps is associated with lower death rates," said I-Min Lee, the lead writer of a report on the study. "The rate of stepping did not matter in these older women: it was the number of steps that mattered.

    The study had a few limitations. For example, the researchers only measured women's movements once, at the start of the study period. It is possible that the women's behaviors changed over time. Still, the results are "good news for older adults who may have difficulty walking at faster paces, "said Keith Diaz, a researcher at Columbia University. He was not involved in the study.

    "Any walking is better than nothing," Diaz said by email. "With even small amounts of walking, your risk of death will be sharply reduced "For those who have difficulty walking, other research shows that any form of aerobic activity provides health benefits," he added. "Swimming, bicycling or any form of activity that is continuous in nature will provide health benefits.