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 aweek-long experiment involving 480 students across three elementary schools. The 374 kids that agreed to participate in the study were provided with adevice that helped record step count and calorie consumption over the entireperiod.

    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 ofbeing 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 Catholic schools in Perth,Australia, which have been testing them since October 2013, have seen similar results. In May 2014, Grove House Primary School in Bradford, West Yorkshire,became Europe's first test one, with a seven-week trial that involved the useof 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 othersdone 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 engaged audience.

    "So, what do you want to do after graduation?"{#blank#}1{#/blank#}However, you have to make up your mind as your last high school year begins. Whether your plans include college, heading straight for the workforce, or taking a year off, here are some practical tips to prepare yourself for the journey.

Going to College

    Some people know from an early age exactly what they want to be and how they plan to get there. {#blank#}2{#/blank#} According to a recent survey, 75% of students change their majors after they enter college. After all, school is also not just about careers and getting a high-paying job after graduation -- it's a place for learning about yourself and the world.

    Selecting a School

    If college is in your future, you need to plan. Start by asking yourself questions about your preferences. {#blank#}3{#/blank#} Once you've narrowed down your choices, ask the schools to send you literature or visit their websites.

Getting a Job

    Maybe you've decided that college isn't for you -- right now, anyway. If you want to join the workforce, opportunities are out there for people who don't have degrees. Some products-selling or service industry organizations offer training programs to high school graduates. Search the classified ads in the newspaper and do some Internet research.  {#blank#}4{#/blank#}

    Taking Time Off

    What if you intend to go to college but just don't feel ready to start yet, for whatever reason? {#blank#}5{#/blank#}This practice is common in some countries, like the United Kingdom, where it's called a "gap year". Even if you decide not to apply to college, it can be a great idea to take a year to do something you may not have an opportunity to do again. Lots of volunteer organizations would welcome your time and energy and would provide you with a wonderful learning experience.

A. You might want to get a high-paid job first.

B. Many juniors and seniors get bored answering that question over and over.

C. You might want to take a year off to pause.

D.  This is the fact that young people have to take into consideration.

E. Ask friends in college about their schools and other schools they're familiar with.

F. Most large companies list their job openings on their websites.

G. Not all of us are so sure of our plans, though, and that's OK too.

    We all need to eat. So, meals could be a chance to stop what we're doing and spend time with the people in our lives. A recent study from a team of South Korea suggests that eating together has many good effects on children and teenagers while frequently eating alone may lead to poor eating habits and poor food choices. People who eat alone more than twice a week have a greater risk of developing high blood pressure.

    There are benefits of family dinners on children and teenagers.

    In 2014, the Organization for Economic Cooperation and Development (OECD) looked at data from nearly three-quarters of the world's countries. Among its findings is the fact that students who share a main meal with their families are less likely to hate school. Children who eat a main meal with their families are also less likely to take drugs (毒品).

    In the report, titled “The Importance of Family Dinners (VIII),'' researchers say that teens who have frequent family dinners are more likely to say their parents know a lot about what's going on in their lives.

    Another study from the University of Montreal finds that children who eat with their families experience long-term physical and mental health benefits. These children are physically in better shape and drink fewer sugary soft drinks. These children also seem to have better social skills and are less violent.

    One of the researchers, Pagani, involved in this study is a professor at the university. She says that mealtimes with parents possibly provide young children with firsthand social events, which helps them have better communication skills.

    If cars had wings, they could fly and that just might happen, beginning in 2012.The company Terrafugia, based in Woburn, Massachusetts, says it plans to deliver its car­plane, the Transition, to customers by the end of 2012.

    "It's the next 'wow' vehicle, "said Terrafugia vice president Richard Gersh. "Anybody can buy a Ferrari, but as we say, Ferraris don't fly."

    The car plane has wings that unfold for flying—a process the company says takes one minute—and fold back up for driving. A runway is still required to take off and land.

    The Transition is being marketed more as a plane that drives than a car that flies, although it is both. The company has been working with FAA to meet aircraft regulations, and with the National Highway Traffic Safety Administration to meet vehicle safety regulations.

    The company is aiming to sell the Transition to private pilots as a more convenient and cheaper way to fly. They say it saves you the trouble of trying to find another mode of transportation to get to and from airports: You drive the car to the airport and then you're good to go. When you land, you fold up the wings and hit the road. There are no expensive parking fees because you don't have to store it at an airport—you park it in the garage at home.

    The car­plane is designed to fly primarily under 10,000 feet. It has a maximum takeoff weight of 1,430 pounds, including fuel and passengers. Terrafugia says the Transition reduces the potential for an accident by allowing pilots to drive under bad weather instead of flying into marginal(临界)conditions.

    The Transition's price tag: $194,000. But there may be additional charges for options like a radio, transponder or GPS. Another option is a full­plane parachute.

    "If you get into a very awful situation, it is the necessary safety option," Gersh said. So far, the company has more than 70 orders with deposits. "We're working very closely with them, but there are still some remaining steps," Brown said.

    Vinegar is great. It makes salad, fries and dumplings taste better, and you can even clean your windows with it. And now, according to scientists, it may even help the planet's population survive climate change.

    Researchers from the RIKEN Center for Sustainable Resource Science (CSRS) in Japan have found that growing plants in vinegar makes them more resistant to droughts. This could mean that in the future, worries about climate change affecting the world's supply of food will be much lower.

    The discovery was made after the researchers studied the Arabidopsis, a plant known for its ability to survive in dry weather. It was found that when the plant was placed in drought-like conditions, it produced a chemical called acetate(醋酸盐)—the main component of vinegar.

    After discovering this, the scientists experimented further by adding acetate to the soil of other plants, and they stopped giving them water completely. After leaving the plants for 14 days, they found that the ones treated with acetate had survived, while the untreated plants had dried up and died. It's hoped that this simple method of survival could soon be used to help farmers in dry countries keep their crops alive.

    Jong Myong Kim, co-author of the study, tells Popular Science magazine that he's already been in touch with people all over the world who are interested in trying this simple and cost-effective method out for themselves from flower growing companies to amateur gardeners. Although at this point keeping thirsty plants alive isn't as easy as just pouring vinegar over them, Kim says he and his team are working on making the process as simple as possible. "Now we are trying to cooperate with some farmers, and also some companies, to make a method to apply this system," he says.

    And for those of us who always forget to ask our neighbors to water our plants when we go away, hopefully this means the end of returning home from a trip to find our favorite flowers have died.

    A society that lives by the plastic fork may very well die from it. That's how things are looking. Anyway, for a world so used to disposable(一次性的) habits, any hope for a solution(解决方案) also increasingly seems to be buried.

    Sure, there have been some hopeful ideas. Boyan Slat, the Dutch inventor developed a plan for Covering the Great Pacific Garbage Patch. Not long after it started, Slat's system experienced "material fatigue(疲劳)"-likely the result of being strained(使受到压力) by all that trash-and the task was delayed.

    All the while, the plastic increases. Its growth is very fast, according to Linda Wang, a professor of chemical engineering at Purdue University. She says, "We'll have more plastic than fish by 2050." Yet Wang, along with other researchers at Purdue, may have a solution not only to this plastic problem, but also to the growing need for clean energy.  Her team has developed a system that turns waste, a durable, lightweight material that accounts for about a quarter of all plastic waste, into a highly pure form of gasoline.

    Publishing their findings in the journal Sustainable Chemistry and Engineering, the scientists' state that instead of making plastic go away, they can break it down and reuse it, using chemistry to destroy what chemistry brought to the world when plastic was developed back in 1907.

    The process uses "supercritical" water-heated to around 450 degrees Celsius (842 degrees Fahrenheit),beyond the key point at which distinct liquid and vapor phases(气液态) exist-to boil plastic waste into an oil, the researchers explain. It takes a couple of hours for the supercritical water to complete the transformation, but the result is a kind of oil that can be used as gasoline or fuel. It can also be turned into other products.

    The researchers have only made the transformation in a laboratory setting so far, but they suggest turning the process to a commercial scale(规模) may not be far off. And considering the 300 million tons of plastic into the environment every year, that day can't come soon enough. But it will come in time.