Have you ever run into a careless cell phone user on the street? Perhaps they were busy talking, texting or checking updates on WeChat without looking at what was going on around them. As the number of this new “species” of human has kept rising, they have been given a new name˗˗˗˗phubbers(低头族).

    Recently, a cartoon created by students from China Central Academy of Fine Arts put this group of people under the spotlight(聚光灯). In the short film, phubbers with various social identities bury themselves in their phones. A doctor plays with his cell phone while letting his patient die, a pretty woman takes selfie(自拍) in front of a car accident site, and a father loses his child without knowing about it while using his mobile phone. A chain of similar events eventually leads to the destruction of the world.

    Although the ending sounds overstated, the damage phubbing can bring is real.

    Your health is the first to bear the effect and result of it. “Constantly bending your head to check your cell phone could damage your neck,” Guangming Daily quoted doctors as saying, “the neck is like a rope that breaks after long-term stretching.” Also, staring at cell phones for long periods of time will damage your eyesight gradually, according to the report.

    But that's not all. Being a phubber could also damage your social skills and drive you away from your friends and family. At reunions with family or friends, many people tend to stare at their cell phones while others are chatting happily with each other and this creates a strange atmosphere, Qilu Evening News reported.

    It can also cost you your life. There have been lots of reports on phubbers who fell to their death, suffered accidents, and were robbed of their cell phones in broad daylight.

    I have just arrived in a country where I don't know the language, where I have no family roots and where I find myself all alone. It may sound frightening. But let me tell you a little secret: it is not.

    When you travel abroad by yourself for whatever reason—exchange program, internship, volunteering, or simply as a tourist—a new and fascinating world will open up for you. A world you would have never been able to see if you had just stayed at home.

    People from a different country are not aliens. They are simply people like you who happened to be born in another region. They have pretty much the same wishes and worries as people from your own country.

    I know that you see a lot of news on TV saying terrible things people do all the time. Your family may have spent a great deal of time telling you not to trust strangers. However, when you travel alone you will realize that people are just as good as you. Everyone is just leading their lives, working, studying and having a good time with their friends. Most people will be happy to help you and get to know you.

    Maybe in the past when you would need months to travel from one place to another, traveling could be expensive. Nowadays, the world is just so connected that it is perfectly possible to find cheap flights, accommodation for all budgets and cheap and quality food.

    You will get lost, but it's fine! I can't even count how many times I didn't know where I was going or how to find the right direction. Everything looks great on Google maps, but sometimes your phone will die or your data will end. Just calm down. Go to a store or stop someone in the street and ask! Or simply walk around and be curious.

    Do you love Beats headphones, True Religion jeans, and UGG shoes? These are some of the most popular brands(品牌) around. They are also expensive. But some experts say they are not much better than cheaper brands.

    For example, Jim Wilcox works for Consumer Reports. He tested all kinds of headphones. He says that $80 Koss Pro headphones provide basically the same quality and comfort as Beats. So why do people pay twice or even 10 times as much for the hottest brands?

    Experts say because it's fashionable, and expensive brands send a message. Brands say "I belong" or "I can afford it."

    Some people think that expensive brand names are worth the price. They say that some designer clothes are really of top quality and that they last longer than cheaper brands. Some teenagers choose to wear popular brands because these brands make them feel good about themselves.

    Alexandra Allam, 17, likes to buy brand-name products. "I'd rather spend the extra money getting something I know I'll be satisfied with." she says. Her friend Emmy Swan agrees, saying "As long as you can afford it, it seems reasonable to buy what you want." But not all teenagers agree. "Spending hundreds of dollars for designer is stupid and unreasonable," says Daniel Steinbrecher, 16. "It's fake（假的）happiness."

    People who are against wearing expensive brand names say that many designer brands aren't any better. "It's wasteful to buy things just because they are popular." says Edmund Williams, 15. "You'll feel better if you buy things because you like them. If you have extra money to spend, it would be better to give it to people in need."

    Construction on Knolly's Tunnel began in 1896, and it was opened on August 13th, 1898 by the man it was named after--Sir Clement C. Knolly, Acting Governor of Trinidad. It linked Rio Claro with Port of Spain. Its architecture is still admired and studied today, and many are amazed that Knolly's Tunnel has stood up to the earth's movement over so many years.

    Much research is being done on the tunnel. At the top of Knolly's Tunnel are cottages covered with leaves, where visitors can sit and enjoy the beauty of nature. Standing at the beginning of Knolly's Tunnel, you can see nothing but the tiny light at the end. The train tracks have been removed and replaced with small stones. Visitors can drive through the tunnel or walk through, but should do so in groups for safety. In the old days, there were no lights, but now there are street lights on the way to the tunnel, though not inside.

    On your way in, you may notice some manholes on the walls of the tunnel. These were there for individuals to step into for safety as the train passed. Knolly's Tunnel can be accessed through Tabaquite and through Mitchell Gap. The road was recently improved, but is better when you enter from Tabaquite, and there are signs on the road directing you to Knolly's Tunnel.

    On the drive to Knolly's Tunnel there are two other cottages where visitors can sit and just enjoy nature. At the site itself, there is nothing to purchase to eat or drink, but in Tabaquite there are several bars, a restaurant, and food outlets. A gas station and a health centre are also close by.

    For those who admire architecture, Knolly's Tunnel is a must-see when visiting Trinidad. For the nature lovers, there is no better place for them to be and for the historians, they can walk or drive through Knolly's Tunnel knowing that many of our ancestors toiled (worked hard) on its structure. So when you visit Trinidad, don't forget to take a look at Knolly's Tunnel!

    Feeding birds is a popular way to watch wildlife. But experts say it might put wild birds at risk.

    Feeding birds is not necessary for their survival except in extreme weather conditions. Feeders(喂食器)can definitely help birds get through that kind of weather. But most birds eat insects and show little interest in bird feeders. For those birds, we can grow native plants in a natural environment. Birds which are fond of eating seeds will be more likely to come to feeders if there is some cover nearby. This lets them feed and then fly to protective areas, such as in trees.

    The most common mistake people make with their bird feeders is that they put feeders in places where birds are easily frightened by passers-by, risk being hurt by cats, or risk flying into windows.

    So set up a bird feeder at least one meter away from a window. That way, if a bird gets frightened, it won't get killed when it hits the glass. Owners of cats should keep them inside home so they can't hurt the birds.

    Some birds are more aggressive at feeders. They eat a lot and do not leave much food for other birds. A solution is to put the food in more than one place by using different kinds of seeds or fruits. This can also increase the number and diversity of birds in your neighborhood. But don't feed wild birds anything salty, like potato chips, or food that could choke them, like bread.

    Pay attention to food quality and freshness. Unprotected food left too long in feeders will turn moldy(发霉), which can kill wildlife.

    Another word of advice: Always provide a supply of clean water for birds, but use care when looking for the right birdbath. If the birdbaths are too deep for birds, putting a few large stones in the water can give the birds a place to sit.

Singapore researchers say they have developed a form of electronic skin that can create a sense of touch. They hope their invention will give people with prosthetic hands (假肢手) the ability to identify different objects.

The skin device measures 1 square centimeter. The system contains 100 small sensors that attempt to recreate things like texture (质地), temperature and even pain. The researchers call the device Asynchronous Coded Electronic Skin, or ACES, which can process information faster than humans' nervous system. Machine learning methods trained the device to recognize 20 to 30 different textures. It can even correctly read Braille letters most of the time, the researchers say.

The system does not require the users' movement to work. Humans need to slide to feel texture. But in this case the skin, with just a single touch, is able to detect textures of different roughness.

A demonstration showed that the device could identify the difference between a soft ball and a solid plastic one. "When you lose your sense of touch, you essentially become numb and prosthetic users face that problem, " said Benjamin Tee, leader of the research team. "So by recreating an artificial version of the skin, for their prosthetic devices, they can hold a hand and feel the warmth and feel that it is soft."

Tee said his idea for the device came from the movie Star Wars, when character Luke Skywalker loses his right hand and it is replaced with a robotic one. In the film, the new hand is able to experience touch sensations just like the real one.

The artificial skin technology is still going through experiments and development. But Tee said there had already been a lot of interest in the system, especially from the medical community. Tee said similar inventions that his team has developed include see-through skin that can repair itself when torn and a material for wearable electronic devices that gives off light.