How cool can libraries be in an era of iPods and Kindles? Morethan you think．Only if youknow where to go.

Central Library: Seattle, Washington, United States

The Central Library in Seattle is modern and fashionable and hastourists from around the world paying visits and taking tours. It was designedby Dutch architect Rem Koolhaas and American designer Joshua Ramus. Tours beganin 2006, two years after its opening. The library holds various artexhibitions, book signings and other events, while visitors can stop by theChocolate cart for a coffee and scan through the gift shop anytime.

Trinity College Library: Dublin, Ireland

The Trinity College Library in Dublin is the oldest library inIreland, founded in 1592 by Queen Elizabeth I. It is the largest single libraryin the world, also known as the Long Room, which contains more than 200,000 ofthe library's oldest books. The Long Room houses one of the oldest harps（竖琴）in Ireland.Dating to the 15th century, the old harp is the model for the symbol foreland.

Geisel Library, University of California: San Diego, UnitedStates

At first glance, it looks like a spaceship. Architect WilliamPereira, who helped design actual space launch facilities at Cape Canaveral inHouston, Texas, designed the library in 1970. It has been featured in sci-fifilms, short stories and novels. The library hosts “Dinner in the Library,”which invites readers for cocktails, and also a special speech fromdistinguished authors．

TU Delft Library: The Netherlands

The library at the Delft University of Technology wasconstructed in 1997 and has more than 862,000 books, 16,000 magazinesubscriptions and its own museum．The buildingitself exists beneath the ground, so you can't really see the actual Library.What makes it interesting is the roof, which is a grassy hill. The roof covers5,500 square meters. And it has become one of the most striking and greeneststructures in the area.

    The term “to extend an olive（橄榄） branch” means to make an offer of peace or reconciliation(和好). This term has Biblical（圣经的）origins, coming from the section of the Old Testament that deals with the flood; the sign that the flood is over is an olive branch brought back to the ark(方舟) by a dove. Olive branches were also symbols of peace in Ancient Greece and Rome, and they continue to be used in various works of art that are meant to suggest peace.

    Some people have suggested that the olive was a very deliberate and well-considered choice as a metaphor(比喻）for peace, because olive trees famously take years to mature. War is typically very hard on the trees because people cannot take the time to nurture them and plant new ones. Therefore, the offer of an olive branch would suggest that someone is tired of war, whether it is an actual war or a falling out between friends.

    In Ancient Greek and Roman times, people would offer actual olive branches. In Rome, for example, defeated armies traditionally carried olive branches to indicate that they were giving in, and the Greeks used them into weddings and other ceremonies. In the modern era, the branch is usually metaphorical, rather than actual, not least because the plants can be a bit difficult to obtain.

    Many people agree that peace negotiations at all levels of society are a good idea. Between nations, obviously, it is important to extend an olive branch to ensure mutual safety and to help the world run more smoothly. This act can also be important on a personal level, as resolving conflict and learning to get along with others is viewed as an important life skill in many cultures.

    At some point in their lives, many people will be advised to extend an olive branch to settle a dispute or resolve an issue. Some people believe that it takes an immense amount of courage to take this action, as it often comes with an admission of wrongdoing and regret.

    Newspapers in Great Britain vary greatly in their ways of carrying the news. There are serious papers for those who want to know about important happenings everywhere, both at home and abroad. There are popular newspapers for those who prefer entertainment to information.

    The London newspaper that is best known outside Great Britain is probably the Times. It began in 1785, and has a high reputation for believable news and serious opinions on the news. It calls itself an independent paper, which means that it does not give its support to a particular political party. Its leading articles give the opinions of the editors, not those of the owners of the paper.

    Letters to the editor are printed in the newspaper. These parts of the Times are always interesting. Most of the letters are serious subjects. But from time to time there will be long letters on the subject which is not at all serious, perhaps on a new fashion of dress, or the bad manners of the young people, compared with manners of thirty years ago.

    Since many of you are planning to study at a college or university in the future, you may be curious to know what your future study will be like. This is the question I want to discuss with you today.

    First, let's talk about what your weekly timetable will look like. No matter what your major may be, you can expect to spend between four and six hours a week for each class attending lecture. Lectures are usually in very large rooms because some courses such as Introduction to Sociology or Economics often have as many as two or three hundred students, especially at large universities. In lectures, it's very important for you to take notes on what the professor says because the information in a lecture is often different from that in your textbooks. Also, you can expect to have exam questions based on the lectures. So it isn't enough to just read your textbooks; you have to attend lectures as well. In a typical week, you will also have a couple of hours of discussion for every class you take. The discussion part is a small group meeting usually with fewer than thirty students where you can ask questions about the lectures, the reading, and the homework. In large universities, graduate students called teaching assistants, usually direct discussion parts

    If your major is chemistry, or physics, or another science, you'll also have to spend several hours a week in the lab doing experiments. This means that science majors spend more time in the classroom than non-science majors do. On the other hand, people who major in subjects like literature or history usually have to read and write more than science majors do.

    When Huang Lizhi took her first class in African sociology at the University of the Witwatersrand in South Africa in February, her professor asked her and her classmates what impresses them most when it comes to Africa.

    Unexpectedly, Huang, 31, found that words like "poverty" and "safari" – negative words that were often associated with the continent in media reports – were the kind of terms her African classmates didn't want to hear. Instead, they preferred to hear the question answered in this way: "Africa is the cradle of humankind" and "Africans are passionate and generous".

    Apparently, there are some misunderstandings between us. It's true that with incidents like the Ebola outbreak in Western Africa and the emergence (出现) of pirates off the coast of Somalia hitting the news, it's easy for us to keep forgetting that Africa has one of the world's oldest civilizations – Egypt, born by the world's longest river, the Nile. The proof is in the Great Pyramid of Giza and the Great Sphinx of Giza, which are both popular among tourists. And the tombs of ancient Egypt have also become endless sources for the literature and film industries.

    When it comes to the natural environment of Africa, our misunderstandings are only bigger. But the truth is that instead of being extremely hot all year and covered by desert, the continent has large areas of savannas (稀树草原) where lions, giraffes and zebras live, the snowcapped Kilimanjaro – the highest mountain in Africa – and even thick forest on the island of Madagascar. These misunderstandings are one of the reasons why the 2018 Beijing Summit of the Forum on China-Africa Cooperation was held on Sept 3 and 4 – to understand each other better.

    Indeed, only by visiting Africa herself did Huang see the convenient living conditions, the amazing natural beauty and the friendly people. In her eyes, her classmates were as hopeful about the future of their own countries as they were about Africa as a whole, and they were quick to demonstrate both their strong will and activity. "At that moment, I knew exactly what they wanted – they wanted their culture to be respected."

Artificial intelligence（Al）has the potential to develop more efficient methods of farming in order to fight global warming. 

 Global warming threatens every aspect of our everyday lives, including crop production. It will reduce the soil moisture（水分）in areas close to the equator according to a study. We are already seeing the negative impact of these changed growing conditions on our crop production. Climate change harms poorer countries that do not have the money to import food. The result is growing food insecurity. However, agriculture is not just affected by global warming—agriculture is part of a vicious（恶性的）cycle in which farming leads to global warming, which in turn destroys agricultural production. The process of clearing land for agriculture results in widespread deforestation（毁林）and contributes to 40 percent of global methane production. Therefore, to deal with climate change, it is necessary to ensure reforestation—but how? What is the path to efficient, environmentally-conscious farming?

This is where AI enters the scene. Farmers use AI for methods such as precision agriculture; they can monitor crop moisture, soil composition, and temperature in growing areas, enabling farmers to increase production by learning how to take care of their crops and determine the ideal amount of water to use. Furthermore, this technology may help reduce deforestation by allowing humans to grow food in urban areas. It could be especially beneficial for countries in Latin America and the Caribbean, where much of the population lives in cities. 

However, AI is far from a silver bullet—it could actually contribute to global warming as well. Due to the large amount of data that AI needs to process, training a single AI releases five times the emissions that an average car would give off during its lifetime. Further, securing access to AI on a global scale may pose some challenges. Countries will need experts in the field who can successfully use the technology and Internet connection, neither of which are always readily available. Therefore, there is still a long way for developing countries to take advantage of the benefits of AI. 

Given these concerns, global leaders must consider the potential costs, and the environmental consequences of data processing before developing AI for use in agriculture.