Most academics would view a post at an elite university like Oxford or Harvard as the crowning achievement of a career—bringing both honour and access to better wine cellars. But scholars desire such places for reasons beyond glory. They believe perching on one of the topmost branches of the academic tree will also improve the quality of their work, by bringing them together with other geniuses with whom they can collaborate and who may help spark new ideas. This sounds reasonable. Unfortunately，as Albert Laszlo Barabasi of Northeastern University，in Boston (and also, it must be said, of Harvard), shows in a study published in Scientific Reports, it is not true.

    Dr Barabasi and his team examined the careers of physicists who began publishing between 1950 and 1980 and continued to do so for at least 20 years. They ranked the impact of the institutions these people attended by counting the number of citations each institution's papers received within five years of publication. By tracking the association of individual physicists and counting their citations in a similar way, Dr Barabasi was able to work out whether moving from a low to a high-ranking university improved a physicist's impact. In total, he and his team analysed 2,725 careers.

    They found that, though an average physicist moved once or twice during his career, moving from a low-rank university to an elite one did not increase his scientific impact. Going in the opposite direction, however, did have a small negative influence. The consequence is that elite university do not，at least as far as physicists are concerned，add value to output. That surprising conclusion is one which the authorities in countries such as Britain, who are seeking to concentrate expensive subjects such as physics in fewer, more elite institutions—partly to save money, but also to create what are seen as centers of excellence—might wish to consider.

    Bees and other pollinators（传粉者）  use smells to track down fresh flowers. Air pollutants can weaken those scents（气味）.  Scientists had worried this might make it harder for some pollinators to find a meal.

    Many animals help pollinate plants. Species that do this include bees, butterflies, etc. But for many reasons, the pollinators available to help plants in this way are decreasing. Scientists think a loss of habitat（栖息地）can be one factor. Diseases and exposure to poisonous chemicals also count.

    Jose Fuentes points to air pollution as another possible factor. He's an atmospheric scientist at Pennsylvania State University. In an earlier study, he showed some air pollutants could weaken or destroy scents emitted(发出)by flowers.

    Searching for a meal leaves pollinators out in the open and at risk of becoming other animal's lunch. And any time spent hunting food is time away from their duties back home, like protecting a hive（蜂巢）or nest, explains T'ai Roulston. He's an insect biologist at Virginia University. Roulston worked with Fuentes on the new study.

    In the study, the researchers focused on five kinds of representative scent molecules(分子)plants emit. One molecule they looked at, for example, is called beta-myrcene. Many flowers give off this chemical into the air.  Normally, this gas can travel some 800 meters from its flower source. But in polluted air, this same molecule could travel only half as far.

    Worse still, air pollution might do more than just weaken scent plumes（气味烟云）．Chemical reactions between air pollutants and plumes may transform the flowers' smells, creating new scents. And these scents may be unrecognizable to pollinators.

    That's certainly Fuentes' concern.  So, he says his next research project will look at how insects handle any new flower scent. "It's possible that some insects will change ways to detect and use these new molecules to find food," he says.

It's long been thought that in order to succeed in life you need to think only of yourself and ignore the needs of others. New research,however,suggests the exact opposite is true and being nice to others actually makes you more likely to be successful. The scientists found that ‘givers' were more likely to share knowledge,and in turn gain more information themselves.

    Researchers divided participants into three groups based on a personality test: givers, takers and matchers. In a social dilemma task, participants were given a made-up donation which was equal to the amount of ￡ 240( $400). They were then asked to decide how much of their money they would give to a shared group pool. They were told that the money in the pool would be doubled and divided equally among all group members. Thus,it would be more beneficial to the group as a whole if everyone contributed their individual donations. However, it would be more beneficial for the individual if everyone else from the group contributed,while the individual kept his or her own money. The researchers used this strategic (策略的) information sharing task to examine how much and which pieces of information participants shared:the less important and already known information or the really important information only known by the individual.

    The results showed that givers are less self-centered and self-loving than takers. Givers shared not only more money with the group, but they also shared important information. Takers on the other hand kept both the money as well as different types of information.

    The findings suggest that it may not be enough to simply provide knowledge management tools in order to make the best of knowledge exchange in a group of people. It may be necessary for leaders and managers to keep in mind the personality styles of their employees. Specifically, they should be aware that takers may keep the important information for themselves.

    Do you like eating processed meat? If you do, think twice now if you want to eat such meat for the sake of your health. Why? It's because eating processed meat can cause cancer, World Health Organization (WHO) experts said last Monday.

    Processed meat is the meat that has been preserved by salting, smoking, drying or canning. Experts from the WHO's International Agency for Research on Cancer (IARC) in Lyon, France studied 800 patients. The experts connected processed meat, such as hot dogs and bacon, with at least three kinds of cancer. A person who eats 50 grams of processed meat per day—about two pieces of bacon—increases his or her risk of bowel(肠) cancer by 18 percent.

    The IARC has included processed meat in its Group 1 list, for which there is “enough evidence” of connection with cancer. Tobacco is also on the Group 1 list.

WHO experts also say red meat, including beef, lamb and pork, is “probably” carcinogenic (致癌的) to humans. Dr. Kurt Strait is with the IARC. He said in a statement that the risk of cancer increases with the amount of meat a person eats. Health experts in some countries advised against eating large amounts of red and processed meat. But those suggestions had been centered on the increased risk of heart disease and obesity.

    However, meat industry groups protest the result of the WHO study. They say that meat is part of a balanced diet. They also say the causes of cancer are broad, and include environment and lifestyle factors.

    The WHO report cites the Global Burden of Disease project, which shows that diets high in processed meat lead to 34,000 cancer deaths per year worldwide.

    Last April, on a Sunday, we took one of our “nowhere” drives. My husband was quietly driving along a back road. I was occupied in the front passenger seat watching the scenery.

    I noticed out of the corner of my eye that my husband was struggling to look out of my window. This frightened me, since his eyes should be on the road in front of him. I asked him what he was looking at out of the windows, and he quietly replied, “Nothing.”

    After a few minutes, I looked over at my husband and noticed a tear running down his cheek. I asked him what was wrong. This time he told me, “I was just thinking about Pop and a story he had once told.” It had something to do with Pop, his friend from childhood, and I wanted to know the story, so I asked him to share it with me.

    He said, “When I was about 8 years old, Pop and I were out fishing and he told me that the pine trees know when it is Easter.”

    I had no idea what he meant by that, so I pressed him for more information.

    He continued on… “The pine trees start their new growth in the weeks before Easter because spring is drawing near. If you look at the tops of the pine trees, you will see the yellow shoots(嫩芽). As the days get closer to Easter Sunday, the tallest shoot will branch off and form a cross. By the time Easter Sunday comes around, you will see that most of the pine trees will have small yellow crosses on all of the tallest shoots.”

    I turned to look out of the window and I couldn't believe my eyes. It was a week before Easter, and you could see all of the trees with the tall yellow shoots stretching to the sky.

    The tallest ones shone in the sunlight like rows of tiny golden crosses. May you find your Easter season filled with beautiful golden crosses!

    Two Chinese-themed films -- "Go Back to China" and "Baby" -- will be screened at the 20th annual Newport Beach Film Festival (NBFF) this week.

    The film "Go Back to China," written and directed by Chinese American filmmaker Emily Ting, tells the story of fashionista, Sasha Li, a spoiled rich girl living in the United States, who burns through her trust fund (信托基金) and is forced to return to China to work for the family toy business. The second Chinese film, "Baby" was directed by Liu Jie and produced by Shan Gao, and will be on its first show at China Onscreen Biennial. In the film, a Chinese girl, Jiang Meng, who is a lowly cleaner working in a children's hospital, swears to save a baby born with the same congenital defects(先天性缺陷) she was born with, whose father has abandoned it as too expensive to treat.

    Running from April 25 to May 2, the Newport Beach Film Festival boasts over 60 narrative films and over 200 shorts in its line-up this year. These films and shorts are carefully selected by many countries which includes China, Chile, Ireland, South Korea, Europe, Japan, South America and Australia. Film fans are invited to attend the Pacific Rim Showcase Party this Wednesday, honoring the best in Chinese, Asian and Australian filmmaking.

    NBFF Executive Director, Gregg Schwenk, said of the festival," This year, the theme is the Power of Ideas. We've always focused on diverse, strong filmmaking, and we're most proud of how we've been embraced, not just by our audience, but by the filmmaking community."