Love to sink into your chairs and relax when you get to school. Then you will not be happy to hear that schools all over the world are seriously considering exchanging traditional desks for ones with no seats at all — Yes, that means you will be encouraged to stand through those already too long math and science lessons! Why would anyone even think of putting kids to such cruelty. Experts say it improves their health and helps fight obesity. While that may seem a little far-fetched (牵强的), the officials at the few schools around the world seem to agree.

    Among them are educators from the College Station Independent School District in Texas, who recently completed a week-long experiment involving 480 students across three elementary schools. The 374 kids that agreed to participate in the study were provided a device that helped record step count and calorie consumption over the entire period.

    All 25 teachers involved in the study reported that students appeared to be more alert and concentrate better, when allowed to stand. The one thing that did surprise the researchers was that younger kids were more willing to stay standing than kids in higher grades. They believe this may have something to do with the fact that after years of being asked to “sit still”, older kids have a harder time adjusting to this unexpected freedom.

    American schools are not the only ones reporting success with stand-up desks. Four schools in Perth, Australia, which have been testing them since October 2013, have seen similar results. In May 2014, Grove House Primary School in West Yorkshire, became Europe's first test one, with a seven-week trial that involved the use of desks made by Ergotron in their fifth-grade classrooms. While official results are not out yet, early reactions from both teachers and students, have been extremely encouraging.

    The findings of these studies and others done previously, all seem to mean that allowing kids to move around in classrooms is a win-win for students and teachers — it helps kids get healthier and provides educators with a more attentive audience.

    Reports tell us that Americans work more and vacation less than people in other major industrial countries. Still, millions of Americans do try to get away from home for a week or two in the summer months. Some might even have the time and money to spend longer on vacation.

    For example, many retired Americans can be found driving around the United States in big recreational vehicles, known as R. V.'s. These serve as a home away from home. In fact, it might even be their only home as they see the country.

    Some American families get in their cars and drive to historic places like Colonial Williamsburg in Virginia. There, they can experience what life was like for early Americans. If that is not exciting enough, also in Williamsburg is a water park and an amusement park with rides.

    Other Americans visit national parks like Yellowstone or Yosemite out in the West. They want to spend time with nature. Or they take their vacation by a lake or the ocean. They might swim or fish. But many just want to sit and enjoy the feeling of doing nothing, except maybe read a book.

    Some families fly to other countries on vacation. Or they go on a cruise ship (大型游轮) and stop in different ports. Cruise ships are like floating cities.

    But not everyone goes someplace special on vacation. This might be the only time for people to work on things like home improvement projects. And while they do that, they might think of all the fun their friends are having.

    Do you ever wonder why trees begin to bud (发芽) earlier in some cities? Scientists finally found the answer but it's not very pleasant. New science suggests a relationship between light pollution and the timing when trees produce buds, which signals the arrival of the spring season.

    Light pollution is defined by the Lighting Research Center as the unwanted consequence of outdoor lighting such as street lights. Excessive (过多的) man-made light at night results in disturbed natural cycles, and also prevents the observation of stars and planets at night. But its effect on the environment goes beyond that.

    By studying some trees, researchers found out that trees that are more exposed to artificial lighting at night bud up to 7.5 days earlier than those at the natural nighttime setting. And they found out that light had a more significant effect than temperature when the buds came out. The early budding may cause problems for insects, which feed on leaves, and the birds which then feed on them in turn. Professor Richard, who helped lead the research, explained that more than the budding of trees, the study implies the danger to the balance of the ecosystem. “At the moment, caterpillars (毛毛虫) are timed to hatch to make the most of the opportunities to feed on freshly budded leaves, and birds hatch in time to feed on the young caterpillar,” he said.

    Migratory (迁徙的) birds are also negatively affected by light pollution. The glare might confuse them and make them lose their flying sense. The phenomenon might explain why some birds accidentally knock into buildings.

    Such results stress the need to pursue studies that aim to measure the effect of light pollution. If the issue were left to continue, it is estimated that by 2100, spring would begin almost a full month earlier than it does today.

    Many independent Chinese women like to earn their own bread, even if their husbands are already bringing home the bacon. But a recent survey suggests that such women find more joy from relationships, rather than successful careers.

    About 73 percent of the 7,000 women surveyed in Beijing, Shanghai and Guangzhou said they would choose to work even if their husbands earned enough for the family. The survey also found that 77 percent define happiness as "enjoying a relationship".

    But striking a balance between career and family can bring challenges to the woman's career advancement.

    "In my company, women usually have an equal or even a higher starting salary than men," said Li Hua, general manager of Beijing Chuangjiashe Book Circulation Company. "However, as they begin to climb up the career ladder, women often meet problems along the way, while men can climb the ladder more easily."

    Both physical and emotional differences can prevent some women from taking tough positions, Li said. But family life is often the main difficulty for Chinese career women.

    Despite these challenges, however, some experts believe it's reasonable for some women to want to be breadwinners.

    "In this way, the roles of a family are decided by the parents' abilities rather than their gender（性别）," said Gu Donghui, a sociology professor at Fudan University.

    Gu says women should have the freedom to decide if they want to stay at home or work to support the family. "Everyone has a different interpretation（解释）of what it means to find self-worth".

    Wang Haibin, an economic expert from Renmin University shares that view: "Traditionally, we tend to regard the family as the cell unit of society. Some members have always been expected to make sacrifices for it. But, it really doesn't matter who earns more. Economic independence and personal choice is essential for both sexes in the family."

    This may be music to your ears. Researchers P. Jason Rentfrow and Samuel Gosling gave 3,500 people a personality（人格、个性）quiz. "We found that the musical styles people like are closely linked to their personalities," Gosling says.

    RAP/HIP-HOP

    Known for their quick speech, some rappers can say more than 700 syllables（音节）a minute! If you like rap/hip-hop, you are energetic and have a way with words. You put a fresh spin on things, whether it's new moves on the dance floor or your hip style.

    CLASSICAL

    In the 18th century, classical musicians were like rock stars. Beethoven and Mozart, for example, played in crowded concert halls. If you like classical, you are open to new ideas and like debating with friends. Creative and imaginative, you can easily spend many hours scrapbooking（剪贴）, writing or painting.

    COUNTRY

    Country music came from the folk songs of English, Scottish, and Irish settlers of the southeastern United States. If you like country, you express your opinions well, which makes you the ideal class president or team captain. Traditional and loyal, you enjoy spending time with your family.

    POP

    Pop music is designed to attract almost everyone, and it does. Each year, the industry brings in about 30 billion dollars! If you like pop, you are attractive to your friends. You can make big things happen, like planning for a huge party or inspiring your team to victory.

    ROCK/ALTERNATIVE

    In the 1950s, rock music created a brand-new culture. Teenagers, for the first time, had an identity separate from adults and children. If you like rock/alternative, you are a risk-taker who never accepts no for an answer. You rise to any challenge, like doing very well in a big exam or landing the lead in the school play.

    If these personality profiles（人格剖析）don't match you, that's OK. These are just for fun.

    Japanese researchers made a botanical announcement on Monday that quickly circled the world. They had developed a banana with an eatable peel (皮)—the Mongee banana.

    The technique used by scientists at D&T Farm is called "freeze thaw awakening". The process involves starling banana trees out in an environment that's nearly minus-80 degrees Fahrenheit, then moving the trees with their still-ripening bananas to a climate of around 80 degrees - an environment banana trees typically grow in the entire time. The extreme temperature change puts the banana's growth into a superfast-speed mode. In this case, the fruit ripens before the skin can catch up. The result is soft and thin skin that hasn't fully developed.

    The banana has been produced only in small amount so far, so customers face a steep bill to save themselves the bother of peeling their banana: it is currently priced at 648 yen ($6) a piece. There's also the question of whether a banana peel is actually worth eating and whether regular banana peels had, rather suddenly, become too big a problem for people who slip on them to bear anymore.

    And what about shipping? For most of the fruit's history, the peel has provided protection, allowing it to travel long distances from where it's grown to nearly every country on Earth. A softer banana would be a step back from regular banana varieties that travel thousands of miles.

    But the banana in the news is arguably good, particularly for a fruit that rarely receives its share of attention. Bananas are the most  consumed fruit in Japan, and also in the U.S. So even if eatable-peel bananas don't ensure plentiful bananas, or even necessarily nutritious bananas, they still look great on Instagram, which probably ensures them a future in Japan's famous luxury (奢侈) fruit markets.