Do you often feel lonely? What do you do when you feel that way? Hide yourself away and spend your time reading, watching TV or walking around?

You might think that feeling lonely is just like feeling happy, sad or scared — that it's just one of your various moods. That is true. However, if you let yourself be lonely for too long without dealing with it, you could be making a serious mistake.

    Doctors have known for some time that feeling lonely is bad for the mind. It can lead to mental health problems such as depression, stress and reduce confidence. “Being lonely means not feeling connected or cared for, but it's not about being mentally alone,” Lisa Jaremka, scientist from Ohio State University, US, told Live Science in January. And there's growing evidence that not having friends is connected with physical illness as well.

    In 2006, for example, scientists studied 2,800 women who had cancer. They found that those who had few friends or family were five times more likely to die of their disease than women with many social contacts. Also, even healthy people had a better chance of falling ill if they felt left out by others, according to the BBC.

    The results have scientists thinking that loneliness might hurt the immune system(免疫系统), which protects the body from diseases.

    Hoping to prove this theory, Jaremka and her research team put volunteers(志愿者) through a stress test. During the test, volunteers were asked to make an unprepared speech in front of a group of stony-faced people. The researchers found that volunteers who said they were lonely in their daily lives felt more stress during the test. And their blood samples showed that all the stress had managed to cause harmful changes to their immune system.

     “Loneliness has been thought of in many ways as a chronic stressor(慢性增压器) — a socially painful situation that can last for quite a long time, ” explained Jaremka, who led the study.

    The number of people suffering from loneliness is increasing all over the world. However, solving the problem is easier said than done. It won't work to just “tell anyone to go out and find someone to love you”, said Jaremka. “We need to create support networks.”

    On a recent visit to the Museum of Modem Art with a friend and her daughter, wandering through the museum's exhibits, I was struck by how often my friend's 13-year-old daughter asked us to take photos of her with her smart phone in front of the artwork. Then, she gazed at the photos which she would then post on Instagram, Snapchat and all the rest. She was not the only person who was doing this; it seemed everyone was busy taking photos of themselves "experiencing" the museum.

    This is by no means a criticism of my friend's daughter or anyone else. What was concerning, at least to me, was that in between being photographed and posting, my friend's daughter had no interest in the artwork, a fact which didn't seem to matter or have anything to do with wanting to post herself as someone enjoying the experience.

    When I was her age, I had no interest in going to museums either. Having no interest in art at her age (and any age) is completely normal. But what is disturbing is how much of a young person's energy these days goes into creating an image of the life they're living and the character they "are" in that life. While creating a self-image has always been a big part of growing up and figuring out our identity, social media seems to have changed the rules of the game. Social media has not just increased the pressure and possibility of creating a self-generated(自我创造的) self-image, but also distorted(歪曲) the process through which we become who we are. Young people now seem to be creating an image of who they are in place of becoming who they are, posting their life rather than living it.

    Social media has turned life and its experiences into an exercise in narcissism(自恋，自我陶醉). No matter what the experience is actually about, it becomes about you, the person who is living it. A concert is not about the music, a restaurant not about the food and a sport event not about the sport; it's all about you, the doer, and what the event says about you. As a result the more we use life create an identity, the more distant from life we feel. Instead of being part of it, we feel as if we have to keep generating new life material.

    I hope the next time you post your story, pause for a moment and experience where you are, feel what it feels like to live what you're living without using life for your benefit, or for anything at all. Just live, without the narrative(叙述). While you may feel this practice is a threat to your identity, causing you to miss a chance to prove your value, in fact, the benefit will far outweigh any loss it brings.

    Imagine you're standing in line to buy a snack at a store. You step up to the counter and the cashier scans your food. Next, you have to pay. but instead of scanning a QR Code（二维码）with your smart phone, you just hold out your hand so the cashier can scan your fingerprint. Or, a camera scans your face, your eyes or even your ear.

    Now, this type of technology might not be far away. As technology companies move away from the traditional password, biometric（生物特征识别的）security, which includes fingerprint, face and voice ID, is becoming increasingly popular.

    In 2013, Apple introduced the iPhone 5s, one of the first smart phones with a fingerprint scanner. Since then, using one's fingerprint to unlock a phone and make mobile payments has become commonplace, bringing convenience to our lives. And since 2016, Samsung has featured eye-scanning technology in its top smart phones, while Apple's new iphone X can even scan a user's face. But despite its popularity, experts warn that biometrics might not be as secure as we imagine. “Biometrics is ideally good in practice, not so much,” said John Michener, a biometrics expert.

    When introducing the new iPhone's face ID feature, Phil Schiller, Apple's senior vice-president, said. “The chance that a random person in the population could look at your iPhones X and unlock it with their face is about one in a million.” But it's already been done. In a video posted on a community website Reddit, two brothers showed how they were each able to unlock the same iPhone X using their own face. And they aren't even twins.

    “We may expect too much from biometrics,” Anil Jain, a computer science professor at Michigan State University, told CBS News. “No security systems are perfect.”

    Earlier last year, Jain found a way to trick biometric security. Using a printed copy of a thumbprint, she was able to unlock a dead person's smart phone for the police, according to a tech website Splinter. “It's good to see biometrics being used more,” Jain told CBS News, “because it adds another factor for security. But using multiple security measures is the best defense.”

    George Aldrich, whose official title is chemical specialist, works at NASA's White Sands Test Facility in New Mexico. He uses his nose to protect astronauts from unpleasant or harmful odors (气味). His near four-decade career has involved smelling objects from technical handbooks to astronauts' personal things.

    It's crucial that all items taken aboard the International Space Station (ISS) are odorless. Since astronauts are allowed to bring personal items aboard, all their objects must be smell-checked before leaving Earth. In a video provided by Science Channel, Aldrich relates one specific occasion when an astronaut wanted to build a ship in a bottle in space. Everything in the ship-building process had to be sniffed—right down to the glue.

    Aldrich and his team are responsible for making sure that objects are not only odorless but also harmless to astronauts. When the ISS heats up, a process called off-gassing occurs, which means chemicals flow out from certain substances (物质). Objects that would be safe on Earth could give off unpleasant odors or become dangerous when exposed to high temperatures in the ISS's unique environment.

    Of course, humans aren't the only testers or the first to be exposed to potentially dangerous objects. Before Aldrich sticks his nose into a substance, it has been examined by machines. Even though machines can detect unsafe substances, computers cannot tell exactly how things smell to humans. While something could be technically fine, it could be smelly to an astronaut.

Aldrich's nose is not alone there. He is the head of a hard-sniffing team of smell testers. Together they smell each object and rate it on a scale (等级) of 1 to 4. According to NASA, 1 cannot be detected, and 4 is considered not bearable. After the scientists conclude their tests, the scores are averaged. If an item is rated more than 2.4 on the scale, it fails the test and is not allowed on the flight.

    Is Paperless Office Really Paperless?

    A rising economy increased paper sales by 6 to 7 percent each year in the early to mid-1990s, and the convenience of desktop printing allowed office workers to indulge anything and everything. In 2004, Ms. Dunn, a communications supplies director, said that plain white office paper would see less than a 4 percent growth rate, a primary reason for which is that some 47 percent of the workforce entered the job market after computers had already been introduced to offices.

    For office innovators, the dream of paperless office is an example of high-tech arrogance（傲慢）. Today's office service is overwhelmed By more newspapers than ever before. After decades of development, the American government can finally get rid of the madness on paper. In the past, the demand for paper has been far ahead of growth in the American economy, but the sales have slowed markedly over the past two to three years, despite the good economic conditions.

    “Old habits are hard to break,” says Ms. Dunn. “There are some functions that paper serves where a screen display doesn't work. Those functions are both its strength and its weakness.” Analysts attribute the decline to such factors as advances in digital databases and communication systems. Escaping our craving for paper, however, will be anything but an easy affair.

    “We're finally seeing a reduction in the amount of paper being used per worker in the workplace,” says John Maine, vice president of a paper economic consulting firm. “More information is being transmitted electronically, and an increasing number of people are satisfied that information exists only in electronic form without printing multiple backups.”

    To reduce paper use, some companies are working to combine digital and paper capabilities. For example, Xerox is developing electronic paper: thin digital displays that respond to a stylus, like a pen on paper. Marks can be erased or saved digitally. Even with such technological advances, the increasing amounts of electronic data necessarily require more paper.

    “The information industry today is composed of a thin paper crust surrounding an electronic core,” Mr. Saffo wrote. The growing paper crust is most noticeable, but the hidden electronic core is far larger and growing more rapidly. The result is that we are becoming paperless, but we hardly notice at all. “That's one of the greatest ironies of the information age,” Saffo says. “It's just common sense that the more you talk to someone by phone or computer, it inevitably leads to a face-to-face meeting. The best thing for the aviation industry was the Internet.”

    Finding your feet in a new town can be hard, especially if you're covered in fur and don't speak the language. But for pets new to Marlborough, help is at hand.

    Marlborough SPCA and the Railway Café, in Blenheim, have joined forces to help welcome pets and their people to the area with morning teas. They hope the morning teas will get tails and tongues wagging(狗摇摆尾巴）as well as giving advice on how to make the move easier.

    Railway Café owner Leanne Harris came up with the creative plan as a way to help welcome people to the area. Leanne moved to Marlborough from Auckland two years ago and said she first struggled to find friends and feel part of the community. "Coming from Auckland I thought people would open their doors and that there would be neighbors calling round with cake. I expected people to come to me and, of course, it wasn't like that. I did get lonely." "I hope to save newcomers having to wait as long as I did to feel part of it all. I would like to welcome them to the town."

    Free plates of sandwiches, cakes will be offered, for the people, while there will be special yoghurt and banana treats for the dogs. The morning teas will take place in the covered area at the back of the popular café beside the railway station off Grove Rd.

    Leanne said she was happy to devote both her time and effort to giving back to the community and felt the project was a great fit with the SPCA.

    "Volunteering is such an amazing thing to do and it changed things for me completely, and I met some amazing people with similar interests."

    SPCA Op Shop manager Karina Greenall, originally from the United Kingdom, said she also wanted to help. "I can give advice on how to resettle pets, the best parks to go to, where the best walks are and where the Civil Service are in town." There will be volunteering chances too for people where they can help out and hopefully make friends too.