What will people die of 100 years from now? If you think that is a simple question，you have not been paying attention to the revolution that is taking place in bio-­technology（生物技术）. With the help of new medicine，the human body will last a very long time. Death will come mainly from accidents，murder and war. Today's leading killers，such as heart disease，cancer，and aging itself，will become distant memories.

    In discussion of technological changes，the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live? Human brains were known to decide the final death. Cells（细胞） are the basic units of all living things，and until recently，scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells，such as those of brain cells，would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100，medicine will have advanced to the point at which every 10 years or so，people will be able to take medicine to repair their organs（器官）. The medicine，made up of the basic building materials of life，will build new brain cells，heart cells，and so on－in much the same way our bodies make new skin cells to take the place of old ones.

    It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence，but many technical problems still must be cleared up on the way to this wonderful future.

    Two weeks ago, Ray Johnstone, an elderly man living alone in South Australia, posted a classified advertisement in search of a friend. Specifically, he was on the hunt for a fishing partner, as he no longer had anyone to share his hobby with. “I'm a widowed retired man who is looking for a fishing mate,” he wrote on Gumtree, “My previous fishing mate is now deceased. He will never accompany me to go fishing. I am a land-based fisherman. I have all the gear for all types of fish that is required for land-based fishing.”

    Like all of us, 22-year-old Mati Batsinilas was touched by the man's advertisement, so he reached out to him and arranged an outing. Rather than simply spend the day with Johnstone somewhere local, however, he and his family offered to take him on an all-inclusive weekend fishing trip of Stradbroke Island in Queensland. And, as expected, they had a good time. “Whilst on the island we covered four-wheel driving, site-seeing, fishing, swimming, chats with the locals and the best of all... just relaxing and chatting like mates,” Batsinilas wrote in a Facebook post. “Once you reach a level of maturity in life, age should only be a number. My respect for Johostone is obviously very high, but I treated him exactly the way I would have treated one of my 22-year-old mates.”

    Fortunately, it sounds like Johnstone won't have to place more classified advertisements any time soon. In addition to finding a friend, the pensioner has become a star on the Internet, with many social media users voicing their interests in meeting the now-famous fisherman.

    We often just use our sense of sight, touch, smell, and taste to eat food. But what about our sense of hearing? Does sound also affect our dining experience?

    A new report answers, “yes, it does.”

    That answer comes from researchers at Brigham Young University and Colorado State University in the United States. They found that hearing is important in the eating experience.

    Hearing is often called “the forgotten food sense”, says Ryan Elder. Elder is an assistant professor of marketing at Brigham Young University's Marriott School of Management. He says that if people notice the sound the food makes as they eat it, they might eat less. On the other hand, watching loud television or listening to loud music while eating can hide such noises. And this could lead to overeating.

    For the study, the researchers wanted to test whether the sounds of eating—chewing, chomping and crunching—had any effect on how much a person ate. During the experiments, the test subjects wore headphones and listened to noise at either a high or low audio level. Then researchers gave them a crunchy snack: pretzels. The study found that subjects who listened to the higher volume noise ate more pretzels than those with the low audio levels.

    Elder says that when hiding I heard sounds of eating, like when you watch television or listen to loud music while eating, we take away the sense of hearing. And this may cause you to eat more than you would normally. The researchers are calling this, the “crunch effect”.

    The researchers admit that the effects may not seem like much at one meal. But over a week, a month or a year, all that food can really add up.

    I think that a great friend is like a great artist who can change my feeling about life greatly. When I talk about the person who influenced(影响) me most. I must think of my best friend quickly.

    When I was in my university, one of my classmates sat beside me. His name is Wang Tao. He is my unforgettable friend in my life. He is good at study and handsome. Everyone knows that he is a genius(天才) of my university. Besides, he is kind-hearted and is always ready to help others.

    I remembered that my maths was poor at that time, but he was excellent in solving(解决) maths questions. He often got high scores. Since we talked all day long, he was patient and polite to answer my maths questions. Slowly, I made great progress. I passed the examination finally. Then we became friends naturally.

    We know that we live in a society, so we need a lot of friends. There are two kinds of friends, good and bad, bad friend may make our life failed, while good ones make our life successful. To me, Wang Tao is a very good friend. I learned so many lessons from him, and I became more and more excellent.

    We separated three months ago. Now I miss him very much, and I hope that our friendship will continue to be just as strong after we graduate.

Hong Kong Science Museum

    You might really like the Science Museum if you are interested in science. The Museum wants to teach kids science. It gives them a place to have fun with the equipment there. However, adults can learn some science too.

    The Museum has 6,500 square metres. There are over 500 exhibits, and nearly 70 percent of them are suitable for visitors of all ages. Since its opening in April 1991, the Hong Kong Science Museum has proven itself to be a good place for learning science. Through having better exhibits and fun science programs in an enjoyable environment, the Museum wants to popularize science to the public and the support science education in schools. Visitors at the Science Museum can visit the exhibition in their own way and enjoy the fun of discovery learning.

    If you want to have a visit, you'd better read the information carefully.

    For 63 percent of Americans, coffee is one of their daily essentials. This number has been this high since 2017, according to the National Coffee Association. The rise of coffee is due to its numerous benefits like preventing DNA damage, but it works best if you do this simple thing first: Eat.

    "Drinking coffee on an empty stomach, or early in the morning before you've had breakfast, can raise the level of cortisol (皮质醇) in your body. From the moment you open your eyes in the morning, your body starts releasing cortisol. It's a hormone (激素) that's responsible for ruling your immune response, metabolism (新陈代谢), and stress response," says Dr. Nikola Djordjevic, MD.

    "If you pump your body with caffeine(咖啡因) when your cortisol is at its peak," Djordjevic says, "you'll be forcing your body to bear even more stress." In a study that evaluated preference for caffeinated drinks among medical students, it's shown that 25 percent of students drank coffee in the morning on an empty stomach.

    These students are at an increased risk of mood changes and possible long-term effects on their health, as explained in the study. "Drinking coffee on an empty stomach can greatly encourage the acid in your stomach, producing a more acidic environment," says Dr. Jamie Long, a licensed clinical psychologist. Thus, a full stomach is important to control the amount of stomach acid produced.

    Since coffee increases your stomach acid, you're highly likely to experience heartburn and even develop gastric ulcers (胃溃疡), Djordjevic says. Clearly, drinking coffee on an empty stomach affects physical health. But it does harm to mental health, too. The overproduction of acid in the stomach can cause mood swings, nervousness, shaking and other withdrawal symptoms (症状). "And if you've already had the sign of experiencing anxiety, you're even more possible to be attacked by the effects of coffee," says Long.

    Base line: Know your limits so you can fully experience what coffee can offer, because here's exactly what happens to your body when you drink coffee daily.