Scientists in Britain have managed to teach bumblebees(大黄蜂) to pull strings to get to food and then pass on what they have learned to others in their colony(群体)—showing a high level of intelligence despite their tiny brains.

    Researchers at Queen Mary University of London said the experiments, often used to test the intelligence of apes (猿) and birds, showed for the first time that some insects are up to the task, and can also pass skills on through several generations.

    The findings add to the evidence suggesting the ability for “culture spread” — the ability to learn and pass on knowledge and skills — may not be exclusive to humans.

    In the research, published in the journal PLOS Biology on Tuesday, the scientists were able to train 23 out of a group of 40 bees to pull strings with their legs and feet.

    The strings were attached to discs — or artificial “flowers” — containing food at their center but placed under a transparent screen. The bees, spotting the food beneath the screen, learned to pull the “flowers” out by pulling the string with their legs and feet to be able to get to it.

    From another group of bees given the chance to solve the task without any training, only two of 110 were successful.

    Another group of bees was then allowed to observe the trained bees pulling the strings, and 60 percent of them successfully learned the skill. Finally, trained bees were put in colonies, and the scientists found the technique spread successfully to a majority of the colony's worker bees.

    Lars Chittka, a Queen Mary University professor who guided the project, said the team is interested in figuring out the brain processes behind the bees' learning and teaching skills.

    He was a poet known for the nostalgia he describes in his poems. Now, it's time: for us to express our nostalgia for this great writer.

    On Dec 14, 2017, the famous Chinese poet Yu Guangzhong passed away in Taiwan. Born in 1928 in Nanjing, Jiangsu, Yu studied in Sichuan when he was young. At that time, he had showed great interest in Chinese poems and spent a lot of his free time trying writing poems himself. Then he managed to publish his first poem at the age of 20. A year later, Yu and his family moved to Taiwan. He lived and worked there until his death.

    Nostalgia is Yu's masterpiece in which he expresses his homesickness for the Chinese mainland when he was in Taiwan.

    Published in 1971, the poem remains highly popular among Chinese speakers worldwide. Even those who know little about literature are familiar with lines from the poem. The poem is included in Chinese high school textbooks.

    Besides his achievements in poetry, Yu was also a successful essay writer, critic and translator. He once translated English poet Siegfried Sassoon's poem In Me, Past, Present, Future Meet into Chinese. It is regarded as an accurate and powerful translation, in which the most famous line is “心有猛虎, 细嗅蔷薇” for “In me the tiger sniffs the rose”.

    Yu spent his whole life writing. “The reason why I stick to writing till today comes down to my passion for the Chinese language,” he once said in a 2015 interview. He then added that this passion was strengthened by his love for his mother and His motherland.

    Now, let's appreciate the poem Nostalgia.

    I was in a rush as always, but this time it was for an important date I just couldn't be late for! Thinking of my upcoming evening, I hurried into a store to pick up some flowers, for I did not want to be late for this date. When I paid the bill at a checkout counter, I found myself behind an elderly woman who seemed in no hurry when she paid for her groceries. She looked up at me and smiled. It was a nice smile –warm and friendly –and I returned her gift by smiling back.

    “Must be a special lady, no matter who will be getting those beautiful flowers,” she said.

    “Yes, she's special,” I said, and then to my embarrassment, the words kept coming out.

    “It's only our second date, but somehow I am just having the feeling that she's 'the one'. Jokingly, I added,“The only problem is that I can't understand why she'd want to date a guy like me.”

    “Well, I think she's very lucky to have a boyfriend who brings her such lovely flowers and who is obviously in love with her,” the woman said.” “My husband used to bring me flowers every week –even when times were hard and we didn't have much money. Those were wonderful days; he was very romantic and – of course – I miss him after he died.

    I paid for my flowers as she was gathering up her groceries. I walked up to her, touched her on the shoulder and said,“You were right, you know. These flowers are indeed for a very special lady.” I handed her the flowers and thanked her for such a nice conversation.

    It took her a moment to realize that I was giving her the flowers I had just bought.“You have a wonderful evening,” I said. I left her with a big smile and my heart warmed as I saw her smelling the beautiful flowers.

    I remember being slightly late for my date that night and telling my girlfriend the above story. A couple of years later, when I finally worked up the courage to ask her to marry me, she told me that the story I had told her that night helped me win her heart.

Dear Maya Shao­ming,

    To me, June 6, 1990 is a special day. My long­awaited dream came true the minute your father cried, "A girl！"You, little daughter, are the link to our female line, the legacy of another woman's pain and sacrifice 31 years ago.

    Let me tell you about your Chinese grandmother. Somewhere in Hong Kong, in the late fifties, a young waitress found herself pregnant(怀孕) by a cook. She carried the baby to term, suffered to give it birth, and kept the little girl for the first three months of her life. I like to think that my mother—your grandmother—loved me and fought to raise me on her own, but the daily struggle was too hard. Worn down by the demands of the new baby and perhaps the constant threat of starvation, she made the painful decision to give away her girl so that both of us might have a chance for a better life.

    Having a baby in her unmarried state would have brought shame on the family in China, so she probably kept my existence a secret. Once I was out of her life, it was as if I had never been born. And so you and your brother and I are the missing leaves on a family tree.

    Do they ever wonder if we exist?

    Before I was two, I was adopted by an Anglo couple. I grew like a wild weed and grasped all the opportunities they had to offer—books, music, education, church life and community activities. In a family of blue­eyed blonds, though, I stood out like a sore thumb. Moody and impatient, burdened by fears that none of us realized resulted from my early years of need, I was not an easy child to love. My mother and I conflicted countless times over the years, but gradually came to see one another as real human beings with faults and talents. Lacking a mirror image in the mother who raised me, I had to seek my identity as a woman on my own. The Asian American community has helped me regain my double identity.

    But part of me will always be missing: my beginnings, my personal history, all the delicate details that give a person her origin. Nevertheless, someone gave me a lucky name "Siu Wai". "Siu" means "little", and "Wai" means "clever". Therefore, my baby name was "Clever little one". Who chose those words? Who cared enough to note my arrival in the world?

    I lost my Chinese name for 18 years. It was Americanized for convenience to "Sue". But like an ill­fitting coat, it made me uncomfortable. I hated the name. But even more, I hated being Chinese. It took many years to become proud of my Asian origin and work up the courage to take back my birth name. That, plus a little knowledge of classroom Cantonese, is all the Chinese culture I have to offer you. Not white, certainly, but not really Asian, I try to pave the way between the two worlds and bridge the gap for you. Your name, "Shao­ming", is very much like mine—"Shao" means "little". And "ming" is "bright", as in a shining sun or moon. Whose lives will you brighten little Maya? Your past is more complete than mine and each day I cradle you in your babyhood, generously giving you the loving care I lacked for my first two years. Sweet Maya, it doesn't matter what you "become" later on. You have already fulfilled my wildest dreams.

    I love you,

Mummy

    In the future those who are taking care of old people may get help from the house itself.

    Over the last few years, new technology, such as the Internet, Wi-Fi and flat TV screens, has changed our homes and the way that we live. Now, another technology revolution is happening. A new project at the University of Hertfordshire wants to create a home that monitors people living in it who are elderly.

    The researchers have developed a wristband device（装置）which helps us to watch the elderly person who is wearing it. The device collects information to see if the person has fallen or has wandered away from where he or she should be.

    The assisted-living project is part of the university's wider Interhome project, which is the development of a smart house. The house remembers the habits of the person who lives there and it uses very low amounts of energy. The Interhome team hope that offering this service will help take care of the elderly. They say, "It's very important that these technologies are there to help and support and not replace any of the existing services."

    The Interhome is not just a research method. It's also a way for students from different scientific backgrounds to learn and develop technology. The university uses the latest technology to help students get experience by developing new hardware and software themselves. The team includes design, engineering and computer science students working together.

    "We are working on a smart-home project in Watford with some companies at the moment," says the project leader. "We are looking at how a smart home can provide even more services." This could help millions of old people around the world have a better and safer life in the future.

Life Begins on Board Your Next Cruise(邮轮)

On a cruise, it's all about choices. And never about effort or annoyance. Simply step aboard and float away, as your grand accommodation takes you from port to port, country to country. Maybe you haven't been on a cruise yet. Let's see what it might look like.

Rise and shine

Everyone is a morning person on a cruise. Wake up to find yourself floating joyfully somewhere out on the horizon, between vast blue skies and rolling oceans. You've travelled far through the night, and each morning begins with a completely new and foreign destination calling from outside your window. What a way to start your day!

Breakfast of champions

Before the morning truly begins, spend some time relaxing on the top floor with a steaming cup of coffee and warm French pastries, taking in the unbelievable views and the fresh sea air. Or head to one of the many restaurants on the ground floor to find a rich meal fit for a king, then walk to the front of the ship and have some fresh fruit and American pancakes in the open-air market.

Ease into your day

Energize your morning with a yoga class, strengthening your body on the open-air board, palms stretched to the sea. Hit the gym for a refreshing workout or take a swim that will set you up for the day. If you are not so sporty, simply spend your morning sitting by the pool reading a book, perhaps losing yourself in the history, culture and legends of your next port of call.