When I was ten years old I went to the USA to visit some family friends. I noticed something funny about the way everyone spoke English.

    One moment! I remember very clearly was at the beginning of the holiday, when my friend asked me if I wanted to order “French fries”. I couldn't imagine what they were. She was amazed that I had never tried them and she ordered a portion for us to share. When the waiter brought us some chips, I asked her where the French fries were. She pointed at the plate of chips! Later that week she said she was going to buy some “chips” from the supermarket. She came out with a packet of crisps（薯片）! How come?

    During that holiday we were also offered “biscuits” with our lunch. This was a very strange idea to me, because in England biscuits are sweet. I later realized that “biscuits” in America are salty snacks. What we call “biscuits', they call “cookies”.

    I was also embarrassed when a stranger told me she liked my “pants”. I wondered how she could see them! My mum then told me that they call “pants” what we call “trousers”, the outer clothing that you wear on your legs instead of inside clothing!

    I was disgusted when I saw an “eggplant” pizza on the menu in a restaurant. But I was puzzled how eggs can grow on plants. My dad ordered this pizza and it was covered in aubergines（茄子）. “They call aubergines 'eggplant' in America!” he told me.

    I think part of the excitement of learning a language is learning about the differences that exist in how it is spoken in different places.

    It's common knowledge that sleep problems can be caused by things such as stress, anxiety, or even using a smartphone before bedtime. But recently, a team of researchers discovered that genes could also be a cause of sleepless nights.

    The scientists, from Rockefeller University in New York, US, found that delayed sleep phase disorder（DSPD，睡眠相位后移综合症）, a condition that affects one's sleeping patterns, is passed down via a mutated（突变的）gene. DSPD sufferers wake up later and go to bed later than the average person. To come to their conclusion, the team studied a 46-year-old woman who is only usually able to fall asleep at 2 or 3 in the morning. It was discovered that the woman's body produces the hormone that helps her sleep at night up to 7 hours later than regular sleepers. The scientists found this was caused by a mutation in one of the woman's genes, one that helps regulate the “body clock”.

    Some of the woman's family members were also found to share the same mutation—and the same sleeping problems –leading the scientists to believe that sleep troubles are passed down through the generations.

    However, having this mutation doesn't mean you automatically have sleep problems. The team also found two people who had the mutation but reported no problems with their sleep.

    But while this is an interesting discovery, it offers no help to those who can't fall asleep at night—although there are a few things you could try to help you sleep earlier.

    BBC journalist Michael Mosley produced a TV documentary in May in which he talked about his battle with insomnia（失眠）and the techniques he used. “I avoid social media for at least an hour before bed, I do mindfulness exercises, and if I wake up in the middle of the night, I read a book for an hour or so,” he wrote in an article for the Radio Times.

    We all know that exercise is good for your health. But some kinds of exercise may be better than others.

    Running, for example, may help to protect against heart disease and other health problems. Running may also help you live longer. Researchers say it is not important how far you run. It also does not matter how fast or even how often you run. As advertisements for the running shoes Nike say, “Just Do It.”

    Recently researchers studied more than 55,000 adults. About one-fourth of the adults reported running regularly. The study found these runners were considerably less likely than non-runners to die of any form of disease, including heart disease. In fact, the runners lived, on average, three years longer than the non-runners.

    This study lasted 15 years. During that time, more than 3,400 of the individuals died. About 1.200 of the deaths were linked to heart disease, hear, attack or stroke.

    One of the researchers is a man named D.C. Lee, a professor of Iowa State University Compared to non-runners, he said, runners showed a much lower risk of dying from some diseases. “Compared to non-runners, runners showed 30 percent lower risk of death by any causes, including heart attack, stroke and cancer. Also, runners compared to non-runners showed 45 percent lower risk of death by cardiovascular diseases（心血管疾病）, including heart attack and stroke.”

    D. C. Lee and the other researchers found that speed, distance and how often one runs made little difference in reducing the risk of death. The runners in the study averaged between 10 and 16 kilometers per hour. Mr Lee said slower runners and those who only ran once or twice a week were helped nearly as much as those who ran faster and further. “And also we looked at the inning over time and we found that persistent runners（over six years）showed the biggest benefits, as well.”

    Most people know the feeling when you walk into a lift（电梯）with other people. A study has found that where people stand is based on their social position on entering the lift.

    Rebekah Rousi, a Ph.D. student, did a study of lift behavior in two of the tallest office buildings in Adelaide, Australia. As part of her research, she took a total of 30 lift rides in the two buildings, and discovered there was a fixed order about where people chose to stand.

    In her research paper, she wrote that more senior men seemed to walk straight towards the back of the lift. She said “in front of them were younger men, and in front of them were women of all ages.” She also noticed there was a difference in the direction where people look during the ride. “Men watched the monitors, looked in the side mirrors (in one building) to see themselves, and in the door mirrors (in the other building) to watch others. Women would watch the monitors and avoid looking into others' eyes (unless in conversations) and the mirrors.”

    Rebekah Rousi concluded that shyer people stand toward the front, where they can't see other passengers, while fearless people stand in the back, where they have a good view of everyone else.

    There are some strange driving laws in different countries.

    We are looking for a full-time nanny to help care for our young children. This position is suitable for people with 3 years or less teaching experience that are looking for a new direction or a break from teaching. It is also suitable for school leavers.
    Responsibilities will include:

    Helping us take care of our young children

    Handling small projects and light housework as needed

    Please apply by sending your resume(简历) to prudolph@architects.com.

    Pre Kindergarten(幼儿园) Teachers

    Are you energetic and believe that children learn best through play-based activities? We do, too. At Montgomery Child Care Association, we try hard to provide the best early care and education for children. Our salary(薪水) and benefits package is one of the best in the industry. An AA (a two-year college degree in the US) or higher in Early Childhood Education plus previous experience with children in a child care setting is preferred.

    Consider a career with us! E-mail: resumes@mccaedu.org.

    Learning Center Instructor

    School on Wheels is a non-profit(非盈利的) organization to support the educational needs of homeless children. We are now searching for an experienced teacher to instruct children during the after-school program at our Downtown Los Angeles Learning Center.

    You should have 3 + years teaching experience and excellent communication skills. Knowledge of the Spanish language is required.

    Please apply by e-mailing your resume to administration@schoolonwheels.org.

    Special Education Teacher

    An exciting teaching opportunity is offered by De LaSalle Academy, a non-profit school for 96 students with special learning needs. De LaSalle Academy has very high expectations for teacher performance, particularly in the areas of teacher-student-parent relationship, classroom management, high level of understanding of disabilities of the student and the ability to recognize student needs.

    If you are 25-35 and have experience in special education, you could be the person we are looking for.

    Please e-mail to imoreau@delasallefm.org.