Recordings of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives (蜂窝)—either recorded or real—may even prevent elephants from damaging farmer's crops.

    In 2002, scientist Lucy King and her team found that elephants avoid certain trees with bees living in them. Today, Lucy wants to see if African honeybees might discourage elephants from eating crops. But before she asked farmer to go to the trouble of setting up beehives on their farms, she needed to find out if the bees would scare elephants away.

    Lucy found a wild beehive inside a tree in northern Kenya and set up a recorder. Then she threw a stone into the beehive, which burst into life. Lucy and her assistant hid in their car until the angry bees had calmed down. Next，Lucy searched out elephant families in Samburu National Reserve in northern Kenya and put a speaker in a tree close to each family.

    From a distance, Lucy switched on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group ignored the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy played the sound of a waterfall (瀑布) instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place.

Lucy is now studying whether the elephants will continue to avoid the sound of angry bees after hearing it several times. She hasn't tested enough groups yet to know, but her initial (最初的) results were promising enough to begin trials with farmers. She has now begun placing speakers in the fields to see if elephants are frightened away.

    The researchers say a person loses two months for every kilogram overweight they are— and seven years for smoking a packet of cigarettes a day.

    Unusually, the Edinburgh university team found their answers by analysing differences in people's genetic code or DNA. Finally they think it will show new ways of helping us to live longer.

    The group used the genetic code of more than 600, 000 people who are taking part in a natural experiment. If someone smokes, drinks, drops out of school and is overweight, it can be difficult to identify the impact of one specific unhealthy behavior.

    Instead, the researchers turned to the natural experiment. Some people carry mutations(变异) in their DNA that increase(食欲) or make them more likely to put on weight, so researchers were able to compare those programmed to eat more with those who were not. The research team also found specific mutations in human DNA that alter lifespan (寿命).

    Mutations in a gene (a set of instructions in DNA) that is involved in running the immune system could add seven months of life on average.

    People with a mutation that increased levels of bad cholesterol knocked eight months off lifespan.

    A rare mutation in a gene—APOE—linked to dementia reduced lifespan by 11 months.

    And one that made smoking more appealing cut lives by five months.

    Dr Joshi says that while genes do influence lifespan, “you've got even more influence” through the choices you make. Dr Joshi said, “We hope to discover genes affecting lifespan to give us new information about ageing and construct treatment tor ageing.”

    There are also some disease mutations that clearly affect lifespan and to destructive effect, such as the Huntington's gene. People with Huntington's often die in their 20s.

    However, in order to follow people until the end of their lives, many of the people studied were born before 1940.

    If you are in Dubai you may notice a robot police officer sharing the street with you. Your first thought might be, “Have I walked into a movie set？”

    The answer is no. That robot is Dubai's newest police officer. The robot has a touch screen instead of a gun. The robot will be employed mostly at shopping centers and other places popular with visitors.

    The robot's face has eyes but no mouth or nose. It stands 165 centimeters tall and weighs 100 kilograms. If the robot works well, Dubai says 25 percent of its police force could be robots by 2030. The robot cop(巡警) was officially presented at Dubai's Gulf Information and Security Expo and Conference in May.

    The police hope the robot will make life easier for the people of Dubai. Khalid Al Razooqi is Director General of Smart Services at the Dubai Police. He said the robot can help the public every day, and that “it won't ask for any sick leave”.

    The robot cannot make arrests (逮捕). But it can recognize faces and compare them to photographs on a criminal database. It can also sense emotions. People can use the robot's touch screen to do things like reporting a crime, paying fines and reporting lost or found things. They can also ask how to get somewhere. The robot can greet and shake hands with people. So far, the robot can speak Arabic and English. It soon will learn other languages such as Russian, Chinese, French and Spanish. In addition to having a touch screen, the robot has a camera that can live stream video to a police command center.

    Dubai has plans to add other kinds of robots to its police force. Within two years, the city plans to use a three meter tall robot that can run up to 80 kilometers an hour. The Dubai government says the machine would be the world's largest robot. A human police officer will be able to sit inside and control the robot. It will be able to lift heavy objects.

    The city also plans to use an egg shaped robot to control parking areas and give tickets to people who break traffic laws.

    Branksome Hall

    Class Size: 12 to 22

    Grades: JK to Gr. 12

    Gender(性别): All girls

    Living: day, Boarding(提供住宿的）

    Founded in 1903, Branksome Hall is Toronto's only all-girls, all-years International Baccalaureate (IB）World School. From the earliest grades, students learn to become leaders and to understand the value of serving the community. Discover Branksome hall's programs at www.brunksome.on.ca.

    Stanstead College

    Class Size: 13

    Grades: Gr. 7 to Gr.12

    Gender: Open to both sexes

    Living: Boarding

    Stanstead College is a private boarding school for boys and girls in Grades 7 through 12. It is an English school that embraces (包含) French in and out of the classroom. It is also uniquely placed to open doors to top universities and colleges in the United States, Canada and around the world.

    Oakwood Academy

    Class Size: 1 to 4

    Grades: JK to Gr. 12.

    Gender: Open to both sexes

    Living: Day

    Oakwood Academy is a private school for students who require an individualized education plan and small class size to meet their unique learning styles. Direct Instruction is used to teach academics in small groups and a meaningful curriculum (课程) allows students to truly learn.

    TEAM School

    Class Size: 8 to 12

    Grades: Gr. 1 to Gr.12

    Gender: Open to both sexes

    Living: Day

    TEAM School provides an academic program for students in Grades 1 through 12. Students from ages 6 to 14 benefit from small class sizes (8 students) and an individualized academic program to provide an educational upgrading.

    Traditional Chinese medicine (TCM) is gaining global popularity. According to a government white paper, TCM has been introduced in 183 countries and regions around the world.

    Westerners' understanding of TCM, however, may be limited to acupundure，cupping and massage (针灸，拔罐和按摩). For instance, the purple, injury-like marks left on US.swimmer Michael Phelps' back from cupping for the purpose of relaxing his muscles and reducing pain became the center of attention during the Rio Olympics in 2016.

    As a matter of fact, Chinese herbs play a more important role in getting rid of diseases and keeping the body in good condition in the TCM treatment system than physical treatment. It is therefore disheartening to know that-while 103 World Health Organization member countries have given approval to the practice of acupuncture，not many recognize Chinese herbal medicine TCM falls far behind Western medicine owing partly to the slow development of Chinese herbs.

    Herbs, are made into pills, powder and soup, and the kind of herbs uscd1 their quality and quantity, and the processing of the ingredients jointly determine the effectiveness of the prescription. Compared with Western medicine, which has standardized drug production processes and treatment methods, TCM lacks standardization, with the chemical composition and functions of its medicines being unclear and their effects being unstable. Fortunately, standardization has improved in recent decades, with an increasing number of factories producing patented TCM drugs.

    Another factor that has prevented the development of TCM prescription drugs is the lack of creativity, While Western medicine-making companies come up with new products every year, TCM drug producers tend to make medicines according to prescriptions handed down from the past. Chinese chemist Tu You your's winning the 2015 Nobel Prize in Physiology or Medicine for her research into malaria(疟疾）treatment may drive creativity to some extent in China's TCM industry. However, the current state of affairs cannot be changed within a short time.

Explore Nice in France - how car travel makes for a memorable holiday.

A classic option to explore the celebrated city of France, such as Nice is through hard travel. Cruising through the South of France, there are museums and restaurants to experience. Visiting these attractions is most convenient with a car. As hiring a car in Nice from the airport is simple. One can sit back and drive through the wonderful country lands without a care in the world. The west side has small hills while the east extends to the Mediterranean Sea. Peaceful vineyards, quiet villages at a rich life awaits you if you drive through the countryside.

Restaurants

The kitchen delights that Nice offers are the cities chief attraction. The Cours Saleya market, offers fine delicacies while sipping the Provencal wine is another soothing experience. Overall, Coted' Azur can be put as the gastronomic capital of France.

Beaches

Being along the coastline，Nice offers some really warm and relaxing beaches to its tourists lined with cosy seaside apartments and hotels.

Tips for Hiring a Car

Choose a car which can easily accommodate you and your family without being too big-- Traffic can be a major issue in some cities.

A GPS navigation system aids in traveling without getting lost and also helps in saving time.

Check with various number of car hire companies for the different prices so that you do not end up with an expensive package. Traveling to France has perhaps been on the wish lists of every travel-hungry person. And you can make your trip even more memorable by traveling through the country in the car.