Paying a higher price than usual for a ticket to see a film in 3D is the annoyance of many a cinema-goer's life.

    But there may be a benefit to doing so, as a study has found that 3D films exercise the brain and improve short-term functioning in a similar way to brain-training tests.

    The research found that people who watched a movie in 3D improved cognitive (认知) skills, compared to those who watched it in 2D.

    The research was led by neuroscientist(神经学家) Dr Patrick Fagan from Goldsmiths University in London. More than 100 people took part in the experiment, where participants watched Disney film Big Hero 6 in either standard format or RealD 3D.

    They also carried out a brain-training-style test before and after seeing a section from the film. The test covered memory, reaction times and cognitive function and the results were compared later.

    According to the research, which was carried out in partnership with science group Thrill Laboratory, participants experienced a 23 percent increase in cognitive processing, as well as an 11 percent increase in reaction times.

     Fagan said that the results showed enough of an improvement in brain function to suggest that 3D could play a part in improving brain power in the future.

    “These findings are more significant than you might think,” he said. “It is a fact that people are living longer and there is a noticeable decline in cognitive brain function in old age which can worsen future quality of life. There has never been a better time to look at ways to improve brain function. The initial results of this study show that 3D films may potentially play a role in slowing this decline.”

    A second part of the experiment involved those watching the film being fitted with headsets that scanned brain activity and this too showed heightened (加强的) activity when watching 3D. According to the results, participants were seven percent more engaged with what they were watching, adding to argument that 3D movies are more like watching real-life—something Professor Brendan Walker from Thrill Laboratory agreed with.

    “As Professor Brendan Walker's test concluded, 3D films are more attractive and heighten the senses — this, in turn, makes the brain run at quicker speeds,” Dr Fagan said.

    There is no question that fewer teenagers are on the roads in the US.

    In 1978, 50% of 16-year-olds had got their first driving licences. In 2008, according to the US Transportation Department, it was just 30%. The number of those aged 19 and under with driving licences has also been declining since 1978, when 11,989,000 had licences. In 2010, it was 9, 932,441, or 4.1% of American drivers.

    In the UK, 683,273 teenagers have driving licences—just 1.85% of total licence holders, according to Department of Transport figures from September 2010.

    But the decline in the US may have more to do with tougher tests and the introduction of the new rule in many states, which force drivers aged under 16 to be with licensed drivers of 21 years and older when driving.

    In recent years, the annual number of journeys being made by American drivers of all ages has declined clearly for the first time ever. Car use began falling in 2007, when average petrol prices almost doubled to $ 4.12 a gallon, and the economy became worse.

    But there are signs that it is getting back to normal and America remains a country on wheels. It has a higher number of cars per head of population than any other country in the world.

    “Cars will always be a popular means of transportation in America. You have to take into consideration some places don't have access to public transportation. Cars are the only way some people can get around,” says Kristin Nevels. This makes driving necessary in some rural states, where about twice as many teenagers are on the road than in big cities.

    The University of Birmingham is the first excellent UK Russell Group university to announce that it will accept the "Gaokao" exam for high-flying Chinese students wishing to join its undergraduate courses in 2019.  High school students who complete the "National Higher Education Entrance Examination", or Gaokao, with top grades will be able to apply for direct entry onto Birmingham degree programmes without first completing a foundation year which is a routine for the freshman.

    Gaokao is usually taken by students in their last year of senior high school and, every year, each province in China sets the grades required to gain admission to its universities. It is usually held across China in early June.  Students are tested in Chinese, Mathematics, a Foreign Language and social sciences or natural sciences.

    University of Birmingham Vice-Chancellor Professor Sir David Eastwood said: "The University of Birmingham has been challenging and developing great minds for more than a century. We welcome people from around the globe to study at Birmingham and Chinese students form an integral part of our education and research community. We are further opening access to Birmingham's wealth of education opportunities for the brightest and most dedicated Chinese students by accepting this strict and important qualification. I look forward to welcoming these high-flying students to the University of Birmingham. "

    Gaokao is increasingly accepted by universities in Australia, the USA, Canada and mainland Europe. Birmingham will only be considering high quality students who achieve a minimum 80% Gaokao score and meet additional academic and English language requirements.

    Professor J on Frampton, Director of the University of Birmingham's China Institute said:" The University of Birmingham has a long history of educating students from China and one of our most famous graduates is Li Siguang-the founding father of Chinese geology. I am delighted that the University is now accepting the Gaokao. This gives the brightest and best Chinese students an opportunity to move straight into the first year of our undergraduate programmes and experience the benefits of studying at a global Top 100 university, such as Birmingham. "

    The University of Tokyo has eight museums covering various fields such as medicine, agriculture and art. Click the names of the museums below to read brief introductions about their histories and exhibits.

    The University Museum

    Having accumulated over three million academic materials for its collection since the University of Tokyo was founded in 1877, the University Museum is the largest museum of its kind in Japan. From the time of its reorganization into an independent entity in May 1996, the Museum has held exhibitions over 60 times.

    The Museum of Health and Medicine

    The Museum of Health and Medicine seeks to provide information about health and medicine to the general public and advance education for students studying medicine. The Museum features both a permanent and a temporary exhibition space and a temporary exhibition space, with the latter focusing on topics related to medical care and the study of medicine.

    The Agricultural Museum

    The Agricultural Museum displays materials from the collection of the University's Graduate School of Agricultural and Life Science, Notable items on display include the documents and portraits of scientists affiliated (隶属的)with the University, internal organs of Japan's famous dog Hachiko, and drawings illustrating German agriculture and the varieties of Japanese cows.

    The Farm Museum

    The Farm Museum opened in 2007 within a renovated dairy bam. The bam was built in 1934 as part of the moving of the University of Tokyo's farm from Komaba to Tanashi, an area in Western Tokyo. The Museum features both permanent and temporary exhibitions. Permanent exhibitions include European farming equipment used on the Komaba Farm, tools for agricultural experiments, agricultural machinery, American tractors and drawings illustrating German agriculture.

    Dogs are our best friends. That's especially true after a disaster, such as an earthquake. When buildings fall down, search and rescue dogs help find trapped people. Dogs' amazing noses can pick up the smell of survivors. Now scientists have developed an electronic tool that does the same thing. It's taking smell detection(探测) to a whole new level.

    The new invention is a sort of electronic nose, which can detect extremely low levels of many compounds(化合物) from people's skin. This isn't the first time engineers have developed such an object. Earlier models, however, have been bulky and expensive. They could not detect low levels of target compounds either. The new one is inexpensive and small enough to fit inside hand-held equipment.

    The electronic nose can detect extremely slight smell of more than one compound at the same time. "Being able to do this, in such a small object, is the significant discovery," says Sotiris E. Pratsinis, Professor of Process Engineering&Materials Science at the Swiss Federal Institute of Technology in Zurich. His team tested it in special spaces. They were like the small spaces where people might be trapped. Chemicals given off by the volunteers built up inside. The electronic equipment detected those compounds at unbelievably low levels.

The results were good news for the research team. But they may be not for our four-legged friends, who could soon be out of a job. "Ideally, this technology could replace search and rescue dogs," Pratsinis says.

    Stephen Taylor, an electrical engineer, agrees that the new technology has some benefits over dogs. Still, he thinks it may be too soon to have our trusty friends retire. He suspects, "I foresee that such an object could add to the fine work done by the dogs." Taylor also pointed out some potential limitations of the new invention. "E-noses are useful, but can be very likely to be affected by unstable readings and interruption," he says.

On an autumn afternoon, a remote sheep farm in southern Greenland is quiet. The silence is abruptly broken when dozens of sheep come thundering across the hills overlooking the farm. Walking after them are Lars Nielsen and his 37-year-old son Kunuk Nielsen.

The Nielsen family has owned and run the farm since 1972. Kunuk says the summers now are longer than when he was a child and that drought has become a problem. The fields are not so green as those in the old days. He has to buy hay (草料) from European countries.

The effects of a warming climate are obvious on the land. While he intends to struggle on, his older brother Pilu has chosen a different path.

Pilu, 40, lives in Qaqortoq in the south of Greenland -- a town of about 3,000 people. Ten years ago, he got his helicopter pilot's license and is now part owner of a small company called Sermeq Helicopters. It caters to construction and telecommunication workers and an increasing number of foreign tourists.

Pilu says he loves his family's sheep farm. But he saw that warming temperatures were making remote areas of Greenland more accessible and wanted to look for other opportunities. His company's most popular tours include a visit to Greenland's glaciers.

The warming temperatures are also affecting traditional ways of life, particularly hunting. The sea ice is changing; it's becoming less so that hunting on ice becomes more difficult. When there's no sea ice, it's difficult to use dog sledges (雪橇), and the whole culture around having dogs and dog sledges and doing traditional hunting on the ice is sort of diminishing.

Besides, many Greenlanders, like Pilu, are leaving the countryside for towns and the capital city Nuuk, where opportunities are greater. A report found that Nuuk's share of Greenland's population grew from 17.2% in 1977 to 29.2% in 2014. If there were enough houses in Nuuk, the share would even be bigger.