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 Ffrench-Constant, 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.

Assistant Professor, Musical Theatre Dance

    Wichita State University seeks to hire a full-time, 9-month, assistant professor, beginning August, 2016. Applicants are required to have a degree in dance, teaching experience at the professional or college level, ability to direct and ability to teach stage movement. Salary depends on qualifications and experience.

For complete information see http://finearts.wichita.edu.

Associate/Full Professor in Theatre and Dance

    The Department of Theatre & Dance at the University of California at San Diego (http://www-theatre.ucsd.edu/) is seeking an experienced theatre artist in lighting design. Significant professional experience is required.

A review of applications will start on June 1, 2016. Application deadline: September 1, 2016.

Technical Director in Performing and Fine Arts

    DeSales University's Performing and Fine Arts Department seeks a highly skilled, professional technical director. The position is a 10-month, staff position with the possibility for summer employment with the Pennsylvania Shakespeare Festival. BA degree or equivalent professional experience is required; MFA is preferred.

    Please email materials to john.bell@desales.edu. Screening of applications begins immediately and will continue until the position is filled.

Assistant Director of Media Resources Center

    Maryland Institute College of Art is seeking an Assistant Director of Media Resources Center in the Academic Affairs Division.

    Position qualifications include a degree in Art History or related field with knowledge of art and design history, library experience, excellent interpersonal and communication skills and familiarity with Photoshop and scanning.

    A review of applications will begin immediately. Applicants may email a letter of interest to jobs@mica.edu. Salary differs depending on your experience. Please include desired salary in your letter of interest.

Application

    Interested persons should electronically submit a cover letter highlighting their experience and qualifications, and names of three professional references with phone and email contact information using the Apply Now link above.

    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 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.

    When I was only 3 years old, my mother taught me to memorize and recite poems. She was my first teacher of the arts, and my father was the first to appreciate my performance. Even at that young age, I had a simple understanding of how art and culture affect us as human beings and how we can connect to each other through the arts, which shapes my life to this day.

    When I was growing up, my parents supported my interest in taking acting classes and doing community theater. Their faith in me and the professional（专业的）training I was getting from my theater teachers gave me a sense of purpose and a sense of self-confidence. I learned what artistic achievement actually was and what hard work the business was. While many people see the rosy picture to our business, I was really learning what it would require for me to become a professional.

    I became an actress, but arts education isn't just about preparing our young people for a job in the arts. I recently talked to some of the kids attending theater education. Some of them want to work in theater, and some don't. They are learning not only theater skills, but also about the world around them. They learn about discipline（纪律）and hard work and what's required and what they have to do to bring themselves to the work. They learn how they can be of service in the world through the arts. They learn how to work with a team. By studying the arts, these students are open to worlds and lives that they might not have any other way of knowing about or any other way to connect with in their lives the way they are right now.

    These young people are our future. We are passing the torch to them. And I think that's one of the most important reasons why we need to foster（培养）the arts.

    In a world with limited land, water and other natural resources (资源), the harm from the traditional business model is on the rise. Actually, the past decades has seen more and more forests disappearing and globe becoming increasingly warm. People now realize that this unhealthy situation must be changed, and that we must be able to develop in sustainable (可持续的) ways. That means growth with low carbon or development of sustainable products. In other words, we should keep the earth healthy while using its supply of natural resources.

    Today, sustainable development is a proper trend in many countries. According to a recent study, the global market for low-carbon energy will become three times bigger over the next decades. China, for example, has set its mind on leading that market, hoping to seize chances in the new round of the global energy revolution. It is now trying hard to make full use of wind and solar energy, and is spending a huge amount of money making electric cars and high-speed trains. In addition, we are also seeing great growth in the global markets for sustainable products such as palm oil (棕榈油), which is produced without cutting down valuable rainforest. In recent years the markets for sustainable products have grown by more than 50%.

    The major challenge of this century is to find ways to meet the needs of growing population within the limits of this single planet. That is no small task, but it offers abundant new chances for sustainable product industries.

    If you want to become a fluent English speaker you should take some advice. There are four skills in learning English. They are reading, listening, speaking, and writing. The most important thing you must remember is that if you want to improve your speaking and writing skills, you should first master the skills of reading and listening.

    Read as much as you can. But your reading must be active. It means that you must think about the meaning of the sentence, the meaning of the unfamiliar(不熟悉) words, etc. There is no need for you to pay much attention to grammars or try to understand all the unfamiliar words you come across, but the fact that you see them for the first time and recognize them whenever you see them, for example, in other passages or books, is enough. It would be better to prepare yourself a notebook so you can write down the important words or sentences in it.

    As for listening, there are two choices: besides reading, you can listen every day for about 30 minutes. You can only pay attention to your reading and become skillful at your reading, then you can catch up on your listening. Since you have lots of inputs in your mind, you can easily guess what the speaker is going to say. This never means that you should not practice listening.

    For listening you can listen to cartoons or some movies that are specially made for children. Their languages are easy. Or if you are good at listening you can listen to VOA or BBC programs every day. Again the thing to remember is being active in listening and preferably taking some notes.

    If you follow these pieces of advice, your speaking and writing will improve quickly, and you can be a fluent English speaker one day.