The full moon climbs over the eastern horizon (地平线) and hangs like a huge orange globe in the sky. A few hours later, the moon is overhead but seems to have changed. The huge orange globe has become a small silver disk. What has happened? Why has the orange color disappeared? Why does the moon seem so much smaller and farther away now that it is overhead?

    The moon appears orange on the horizon because we view it through the dust of the atmosphere. The overhead moon does not really shrink (缩小) as it moves away from the horizon. Our eyes inform us that the overhead moon is farther away. But in this position the moon is actually closer to our eyes than when it is near the horizon.

    The change in size is a trick our eyes and minds play on us. When the moon is low in the sky, we can compare its size with familiar objects. It is easy to see that the moon is much larger than trees or buildings, for example. When the moon is high in the sky, however, it is hard to compare it with objects on earth. Compared to the vastness of the sky, the moon seems small.

    There is another reason why the moon seems to shrink. We are used to staring at objects straight ahead of us. When an object is difficult to see, our eyes have to try to focus on it. When we move our heads back to look up, we will try hard again. Looking at something from an unaccustomed position can fool you into believing an object is smaller or farther away than it is. However, scientists do not yet understand completely why the moon seems to shrink as it rises in the sky.

    Your house may have an effect on your figure. Experts say the way you design your home could play a role in whether you pack on the pounds or keep them off. You can make your environment work for you instead of against you. Here are some ways to turn your home into part of your diet plan.

    Open the curtains and turn up the lights. Dark environments are more likely to encourage overeating, for people are often less self­conscious (难为情) when they're in poorly lit places—and so more likely to eat lots of food. If your home doesn't have enough window light, get more lamps and flood the place with brightness.

    Mind the colors. Research suggests warm colors fuel our appetites. In one study, people who ate meals in a blue room consumed 33 percent less than those in a yellow or red room. Warm colors like yellow make food appear more appetizing, while cold colors make us feel less hungry. So when it's time to repaint, go blue.

    Don't forget the clock—or the radio. People who eat slowly tend to consume about 70 fewer calories (卡路里) per meal than those who rush through their meals. Begin keeping track of the time, and try to make dinner last at least 30 minutes. And while you're at it, actually sit down to eat. If you need some help slowing down, turn on relaxing music. It makes you less likely to rush through a meal.

    Downsize the dishes. Big serving bowls and plates can easily make us fat. We eat about 22 percent more when using a 12­inch plate instead of a 10­inch plate. When we choose a large spoon over a smaller one, total intake (摄入) jumps by 14 percent. And we'll pour about 30 percent more liquid into a short, wide glass than a tall, skinny glass.

    "When someone is rude to you, it can put you in a bad mood. It may even lead you to be rude to someone else, creating a chain of rudeness. In fact, this troubling chain may even be caused by simply seeing someone be rude to another person. You don't even have to be the target of the had behavior," stated a researcher.

    The researchers worked with 81 persons, with occupations ranging from security to business to medicine, who were asked to complete online surveys over a 10-day period. Participants recorded their moods when they woke up; and in the evening, they described their experiences over the course of that day.

    Each morning the participants also viewed a short video, describing workplace interaction of some kind. Half of the mornings, the video included some kind of rudeness while the other half had some kind of warm interaction in the workplace. Rudeness was conveyed through various means, including a lack of eye contact or unpleasant language.

    Participants who watched the rudeness videos reported seeing or experiencing rudeness during the day, and they were also more likely to escape from fellow employees to avoid being the victims of rudeness themselves. They reported their overall work suffered that day as a result.

    Not all participants were affected by the rudeness videos, however. A few weeks before the study began, the participants completed an evaluation that measured their self-confidence and emotional stability among other things. The participants who scored higher on this evaluation were significantly less likely to be influenced by the rudeness.

    Consequently, one of the researchers recommended that companies hire managers who can limit exposure to rudeness, provide plenty of positive reinforcement (强化) and build a civil workplace environment. This, in turn, could help employees build their confidence levels and help them better handle workplace rudeness.

    Closeness and independence are both important in our life. Though all humans need both of them women tend to focus on the first and men on the second. It is as if their lifeblood ran in different directions.

    These differences can give women and men differing views of the same situation, as they did in the case of couple I will call Tracy and Brian. When Brian's old high school friend called him at work and announced he'd be in town on business the following month, Brian invited him to stay for the weekend. That evening he informed Tracy that they were going to have a houseguest, and that he and his friend would go out together the first night to chat like old times. Tracy was upset. She was going to be away on business the week before, and the Friday night when Brian would be out with his friend would be her first night home. But what upset her the most was that Brian had made these plans on his own and informed her of them, rather than discussing them with her before extending the invitation.

    Tracy would never make plans, for a weekend or an evening, without first checking with Brian. She can't understand why he doesn't show her the same courtesy and consideration that she shows him. But when she protests, Brian says, "I can't say to my friend, 'I have to ask my wife for permission'!"

    To Brian, checking with his wife means seeking permission, which implies that he is not independent, not free to act on his own. To Tracy, checking with her husband makes her feel good to know and show that she is involved with someone, that her life is bound up with someone else's.

    Tracy and Brian both felt upset by this incident because it cut to the core of their primary concerns. Tracy was hurt because she sensed a failure of closeness in their relationship: He didn't care about her as much as she cared about him. And he was hurt because he felt she was trying to control him and limit his freedom.

    While it's books that make a library, being in lovely surroundings may provide inspiration and help you work a little bit harder. Here are some of the coolest libraries of the world.

    Library of Birmingham – Birmingham, U.K.

    The new Library of Birmingham is said to be not only Britain's biggest public library, but also the largest in Europe. Designed by Dutch architects, this replacement for the Birmingham Central Library was opened in 2013 and has a wealth of resources within its walls, including adults and kids' libraries, music collections, a Shakespeare Memorial Room, and even a gym room. Gardens crown the roof, while the changing seasons bring variations in the shadows and reflections inside.

    National Library of France – Paris, France

    The National Library of France, which now contains an astonishing collection of 30 million, dates back to the 14th century and this royal library was set up at the Louvre by King Charles V. The Library was moved to Rue de Richelieu site in 1868, with major design work carried out by French architects Henri Labrouste and, following his death, Jean-Louis Pascal. Here, the reading rooms are elegance itself. There are more than just books to be found.

    State Library of New South Wales – Sydney, Australia

    The public State Library of New South Wales holds the honor of being the oldest institution of its kind in Australia. It was originally set up as the Australian Subscription Library in 1826, but it wasn't until 1942 that its permanent home was ready. Designed by Sydney architect Walter Liberty Vernon and completed in 1910, the magnificent sandstone Mitchell Wing is one of the architectural highlights.

Seattle Central Library – Seattle, Washington, USA

    Seattle Central Library's distinctive design ensures it stands out. Architect Rem Koolhaas is one of the names attached to its design. Architects sought to envelop the 11-story building with "a layer of transparency", using a skin of glass and metal. The finished article houses about 1.45 million books and other things, as well as more than 400 computers available for public use. The building, which opened in 2004, was included on the American Institute of Architects' list of America's 150 favorite buildings in 2007.

Whether in the home or the workplace, social robots are going to become a lot more common in the next few years. Social robots are about to bring technology to the everyday world in a more humanized way, said Cynthia Breazeal, chief scientist at the robot company Jibo.

While household robots today do the normal housework, social robots will be much more like companions than mere tools. For example, these robots will be able to distinguish when someone is happy or sad. This allows them to respond more appropriately to the user.

The Jibo robot, arranged to ship later this year, is designed to be a personalized assistant. You can talk to the robot, ask it questions, and make requests for it to perform different tasks. The robot doesn't just deliver general answers to questions; it responds based on what it learns about each individual in the household. It can do things such as reminding an elderly family member to take medicine or taking family photos.

Social robots are not just finding their way into the home. They have potential applications in everything from education to health care and are already finding their way into some of these spaces.

Fellow Robots is one company bringing social robots to the market. The company's "Oshbot" robot is built to assist customers in a store, which can help the customers find items and help guide them to the product's location in the store. It can also speak different languages and make recommendations for different items based on what the customer is shopping for.

The more interaction the robot has with humans, the more it learns. But Oshbot, like other social robots, is not intended to replace workers, but to work alongside other employees." We have technologies to train social robots to do things not for us, but with us," said Breazeal.