A “lost tribe” that reached America from Australia may have been the first Native Americans, according to a new theory.

    If proved by DNA evidence, the theory will break long established beliefs about the southerly migration of people who entered America across the Bering Strait, found it empty and occupied it.

    On this theory rests the belief of Native Americans to have been the first true Americans. They would be classified to the ranks of escapee, beaten to the New World by Aboriginals (土著人) in boats.

    To a European, this may seem like an academic argument, but to Americans it is a philosophical question about identity, Silvia Gonzales, of Liverpool University said.

    Her claims are based on skeletons found in the California Peninsula of Mexico that have skulls quite unlike the broad Mongolian features of Native Americans. These narrow-skulled people have more in common with southern Asians, Aboriginal Australians and people of the South Pacific Region.

    The bones, stored at the National Museum of Anthropology (人类学) in Mexico City, have been carbon-dated and one is 12,700 years old, which places it several thousand years before the arrival of people from the North. “We think there were several migration waves into the Americas at different times by different human groups,” Dr. Gonzales said. “The timing, route and point of origin of the first colonization of the Americas remains a most contentious topic in human evolution.”

    But comparisons based on skull shape are not considered conclusive by anthropologists, so a team of Mexican and British scientists, backed by the Natural Environment Research Council, has also attempted to take out DNA from the bones. Dr. Gonzales declined yesterday to say exactly what the results were, as they need to be checked, but indicated that they were consistent (一致) with an Australian origin.

    Everybody hates it, but everybody does it. A recent report said that 40%of Americans hate tipping. In America alone, tipping is a $ 16 billion-a-year industry. Consumers acting politely ought not to pay more than they have to for a given service. Tips should not exist. So why do they? The common opinion in the past was that tips both rewarded the efforts of good service and reduced uncomfortable feelings of inequality. And also, tipping makes for closer relations. It went without saying that the better the service, the bigger the tip.

    But according to a new research from Cornell University, tips no longer serve any useful function. The paper analyzes numbers they got from 2,547 groups dining at 20 different restaurants. The connection between larger tips and better service was very weak. Only a tiny part of the size of the tip had anything to do with the quality of service.

    Tipping is better explained, by culture than by the money people spend. In America, the custom came into being a long time ago. It is regarded as part of the accepted cost of a service. In New York restaurants, failing to tip at least 15% could well mean dissatisfaction from the customers. Hairdressers can expect to get l5%-20%, and the man who delivers your fast food $ 2. In Europe, tipping is less common. In many restaurants the amount of tip is decided by a standard service charge. In many Asian countries, tipping has never really caught on at all. Only a few have really taken to tipping. According to Michael Lynn, the Cornell papers' author, countries in which people are more social or outgoing tend to tip more. Tipping may reduce anxiety about being served by strangers. And Mr. Lynn says, “In America, where people are expressive and eager to mix up with others, tipping is about social approval. If you tip badly, people think less of you. Tipping well is a chance to show off.”

    The more interested you are in a topic, the more likely you may be to form “false memories” about the events related to that topic.

    “Most people are pretty confident about their own memory for some events, but new research shows that false memory is a lot more frequent than many people realize. In terms of daily life, the key point here may be to understand that someone who remembers an event differently from yours isn't necessarily lying—someone's memory may be faulty, or it might be you,” said study co-author Ciara Greene, a psychologist at the university College Dublin.

    In the study, the researchers asked 489 people to read four news stories about events that were related to the topics they ranked as the most interesting, and four stories about events related to the topics they rated as the least interesting. In each case, three of these events really did occur, but the fourth one was made up.

    It turned out that people tended to remember the stories of the topics they said they were more interested in compared with the topics they were not interested in. However, the participants also tended to store more false memories related to the topics they were interested in compared with the topics they were not interested in, the researchers found.

    The more people know about a topic, the more memories related to this topic they have stored in their brains, the researchers said. Therefore, when a person meets new information on this topic, that information may find traces of similar memories that have already stored in the brain, Greene said.

    “This can result in a sense of familiarity or recognition of the new material, leading to the conviction (确信) that the information has been met before and is in fact an existing memory,” Greene said. In other words, this new material or information may “feel” familiar and therefore the person may believe it must be true, he said.

    Learning more about how false memories work may help protect against the harmful results of them, such as when eyewitness accounts(证言) of crimes are faulty.

    If a trip to Rome or Paris is in your future, be prepared: The European Union Parliament is calling for an end to visa-free travel Americans. EU lawmakers passed a resolution urging the EU Commission to impose visas on U. S. citizens traveling into the 28-nation bloc.

    The dispute(争论)centers on reciprocal treatment of travelers from EU nations and the United States. While Americans have been able to travel throughout EU member nations without a visa, the U. S. still requires citizens of five EU countries-Bulgaria, Croatia, Cyprus, Poland and Romania-to apply for entry visas when visiting the U. S, Reuters reports. Citizens of the other 23 EU member nations can use the U. S. visa waiver program to enter America. The EU lawmakers are calling for mutual treatment for all EU citizens, says Reuters. They've given the EU Commission two months to respond.

    The trans-Atlantic visa dispute first came to light in April 2014, according to an EU Parliament news release. At that time, five countries-Australia, Brunei, Canada, Japan and the U. S. –required visas for some EU citizens. Since then, Australia, Brunei and Japan have lifted their visa requirements for all EU citizens. Canada, which currently imposes(推行)visa requirements on Bulgarian and Romanian citizens, plans to follow suit in next December, leaving just the United States at odds with the issue of reciprocity of visa-free travel with the EU.

The EU says if a visa requirement for Americans is introduced, it would be temporary, according to a story in Money, which did not give a time frame.

    Londoners are great readers. They buy vast numbers of newspapers and magazines and of books-especially paperbacks, which are still comparatively cheap in spite of ever­increasing rises in the costs of printing. They still continue to buy "proper" books, too, printed on good paper and bound (装订) between hard covers.

    There are many streets in London containing shops which specialize in book­selling. Perhaps the best known of these is Charring Cross Road in the very heart of London. Here bookshops of all sorts and sizes are to be found, from the celebrated one which boasts of being "the biggest bookshop in the world" to the tiny, dusty little places which seem to have been left over from Dickens' time. Some of these shops stock, or will obtain, any kind of books, but many of them specialize in second­hand books, in art books, in foreign books, in books on philosophy, politics or any other of the countless subjects about which books may be written. One shop in this area specializes only in books about ballet!

    Although it may be the most convenient place for Londoners to buy books, Charring Cross Road is not the cheapest. For the really cheap second­hand books, the collector must venture off the beaten track, to Farringdon Road, for example, in the East Central district of London. Here there is nothing so impressive as bookshops. The booksellers come along each morning and pour out their sacks of books onto small handcarts. And the collectors, some professionals and some amateurs, have been waiting for them. In places like this they can still, occasionally, pick up for a few pence an old one that may be worth many pounds.

    I attended a party one night. During the dinner a man told a humorous story based on the quotation: "There's a divinity that shapes our ends, rough-hew them how we will."

    The storyteller mentioned that the quotation was from the Bible. I knew he was wrong. There couldn't be the slightest doubt about it. To get a feeling of importance and display my superiority, I appointed myself as an unwelcome committee member to correct him. He stuck to his guns. "What? From Shakespeare? Impossible! Absurd! That quotation was from the Bible." And he knew it.

    The storyteller was sitting on my right; and Frank Gammond, an old friend of mine, was seated on my left. Mr. Gammond had devoted years to the study of Shakespeare. So the storyteller and I agreed to submit the question to Mr. Gammond. Mr. Gammond listened, kicked me under the table, and then said, "Dale, you are wrong. The gentleman is right. It is from the Bible."

    On our way home that night, I said to Mr. Gammond, "Frank, you knew that quotation was from Shakespeare. "Yes, of course," he replied, "Hamlet, Act Five, Scene Two. But we were guests at a happy time, my dear Dale. Why argue with the storyteller? Why prove to him he is wrong? Why not let him save his face? Always avoid your sharp angle." I learned a lesson I'll never forget. I not only had made the storyteller uncomfortable, but also had put my friend in an embarrassing situation. How much better it would have been had I not become argumentative.

    Nine times out of ten, an argument ends with each of the contestants more firmly convinced than ever that he is absolutely right. You can't win an argument. You can't because if you lose it, you lose it; and if you win it, you lose it