The most widespread fallacy (谬论)of all is that colds ire caused by cold. They are actually caused by viruses passing on from person to person. You catch a cold by coining into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them forever. But they do not. And in the isolated Arctic Regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.

    During the First World War soldiers who spent long periods in the trenches(战壕), cold and wet, showed no increased tendency to catch colds.

    In the Second World War prisoners at the Auschwitz concentration camp，naked and starving, were astonished to find that they seldom had colds. At the Common Cold Research Unit in England, volunteers took part in experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time. After taking hot baths, they put on bathing suits, allowed themselves to be with cold water, and then stood about dripping wet in drafty rooms. Some wore wet socks all day while others exercised in the rain until close to exhaustion. Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.

    If then, cold and wet have nothing to do with catching colds, why are they more frequent in the winter. Despite the most pains-taking research, no one has yet found the answer. One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times, and this makes it easier for cold viruses to be passed on.

    Our brains work in complex and strange ways. There are some people who can calculate the day of the week for any given date in 40,000 years, but who cannot add two plus two. Others can perform complex classical piano pieces after hearing them once, but they cannot read or write.

    Dr. J. Langdon Down first described this condition in 1887. He called these people idiot savants. An idiot savant is a person who has significant mental injury, such as in autism (自闭症) or retardation. At the same time, the person also exhibits some extraordinary skills, which are unusual for most people. The skills of the savant may vary from being exceptionally gifted in music or in mathematics, or having a photographic memory. One of the first descriptions of a human who could calculate quickly was written in 1789 by Dr. Benjamin Rush, an American doctor. His patient, Thomas Fuller, was brought to Virginia as a slave in 1724. It took Thomas only 90 seconds to work out that a man who has lived 70 years, 17 days, and 12 hours has lived 2,210,500,800 seconds. Despite this ability, he died in 1790 without ever learning to read or write.

    Another idiot savant slave became famous as a pianist in the 1860s. Blind Tom had a vocabulary of only 100 words, but he played 5,000 musical pieces beautifully.

    In the excellent movie Rain Man, made in 1988 and available on video cassette, Dustin Hoffman plays an idiot savant who amazes his brother played by Tom Cruise, with his ability to perform complex calculations very rapidly.

Today we more clearly recognize that the idiot savant is special because of brain impairment. Yet not all brain injury leads to savant skills. Some studies have shown that people who have purposeful interruption of the left side of the brain can develop idiot savant skills. However few people wish to participate in such experiments. There are many excellent reasons for not undergoing unnecessary experimentation on one's brain. The term idiot savant is outdated and inappropriate. Virtually all savants have a high degree of intelligence and are thus not idiots.

    Do you often dream at night? How do you feel when you dream? Is it useful to our health? “Dreams may be more important than sleep, and we all need to dream,” some scientists say.

    Dreams take up about one quarter of our sleeping time. People have several dreams each night. Dreams are like short films. They are usually in colour. Some dreams are like old films. They come to us over and over again. That may be because the dreamer is worrying about something. Dreaming may be a way of trying to find an answer. Some people get new ideas about their work from dreams. They may have been thinking about their work all day. These thoughts can carry over into dreams.

    Sometimes we wake up with a good feeling from a dream. But often we can't remember the dream. Dreams can disappear quickly from memory.

    Too much dreaming can be harmful. The more we sleep, the longer we dream. The mind is at work when we dream. That is why we may have a long sleep and still wake up tired.

    March 3 marks World Hearing Day. This year's theme is “Check your hearing!” Many experts and health organizations, including those who pay attention to the hearing-impaired (听力障碍), are working to help people realize the importance of protecting their hearing and avoid hearing loss.

    When we talk about music, what kind of feelings does it bring? Excitement… and relaxation. But what if the music lasts for hours?

    We interviewed a group of musicians based in Beijing during the weekend. They all said that hours of exposure to loud music can cause discomfort. One added that band members like to play at maximum volume (音量) and forget the harm that loud music can cause. The same thing not only occurs to musicians. It's also not rare for daily users since listening to loud music on loud sound equipment has become a part of modem life. According to the WHO, the practice has put more than a billion people around the world, aged 12-35, at risk of losing their hearing.

    We also interviewed some headphone users in the street, and most of them said that they are not heavy users but admitted they use headphones for hours on the subway and in the office or home. It's easy for these people to gradually increase the volume without awareness, especially in a noisy environment. Often, headphone users fail to realize they're listening to audio at unsafe levels until serious hearing problems suddenly occur.

    There are many reasons for hearing loss, including loud acoustic (听觉的) sources, drug abuse, and diseases. Experts suggest frequent medical checks and prevention measures.

    Whether congenital (先天的) or acquired, loss of hearing is usually irreversible. “Once the hearing loss occurs, it's already too late to be changed back to what it was before,” said Yang Shiming, expert of the Chinese PLA General Hospital. “Early prevention, early identification and early treatment. If everyone could do these things, hearing loss and its harm could be kept to a minimum,” Yang said. Of course, this applies to every one of us.

    Saturday, 22 April, 2017

    We are currently on a camp site near Calais, on our way to the UK, and it is pouring with rain. As if gods want to prepare us for the UK at all costs. As if we don't know what rain is… Our ferry to the green isles will leave tomorrow at 10: 30 and despite the rain, I am really looking forward to it.

    It has taken us a while to get here, as we already left EI Chorro on 4 April. After rushing through Spain in two days, however, we came to an inevitable slow-down when we entered France. Inevitable, as France has simply too much to offer for us, so as soon as we crossed the Pyrenees, our driving sequence became something like driving a few kilometres, visiting a castle, driving a few kilometres, taking pictures of a nice church, driving a few kilometres, having a quick peek at a flea market, driving a few kilometres, visiting a museum etc. When we entered Brittany the real sightseeing started, in Vannes, in Lorient, in Brest and then on to Normandy: Le Mont St Michel, Bayeux and finally, finally the D-Day beaches. I always wanted to visit these, for obvious reasons I would say, but my father, realistic as he was, calculated the chances that it would rain a considerable amount of days of a three-week holiday and always decided against it. But a few days ago I finally stepped onto Gold Beach (where the Brits landed) and I was greeted by the Norman sun. A beautiful day.

    Scientists around the world are striving for effective detection of cancer in the early stages, which is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body, and a Chinese scientist may have found a quick way of knowing whether malignant tumors (恶性肿瘤) exist in a patient's body, with just one drop of blood.

    Malignant tumors in early phases can be cured. However, it's extremely difficult to be aware of cancer in its early stages, as patients don't show obvious symptoms and thus it can only be found in its later stages, which is already too late, so to detect cancer early remains a global challenge for scientists.

    Back in 1989, scientists have found a kind of heat shock proteins (HSP), named Hsp90α, which existed in human bodies and can be used as a cancer biomarker detection kit. Scientists around the globe have been working on it since then, and more than 10, 000 journals have been published on accredited magazines, yet no one has actually turned their research results into medical products.

    However, Luo Yongzhang and his team in Tsinghua University's School of Life Sciences in Beijing seemed to have cracked the code, after working on the problem since 2009.The team has produced an artificial Hsp90α protein for clinical use that gains structural stability by regrouping proteins. The test kit can diagnose multiple kinds of cancer by analyzing a drop of human blood. This means they are able to "create" the protein, in any quantity, and at any time they wish to.

    The kit has since been used in clinical trials involving 2, 347 patients at eight hospitals in China. It was the first clinical trial in the world to test if the protein could be a useful tumor biomarker for lung cancer, and it succeeded. Now, the kit has been approved to enter the Chinese and European markets, 24 years after Hsp90α was discovered.