In Korea, it is rude to wear shoes inside someone's house because it is considered dirty. In Saudi Arabia, you should not bring food to someone's house because taking food or drink suggests that you think the host cannot afford the meal. More and more people around the world are travelling abroad to study, to go on vacation, or to work, and while it can be a great way to learn about other cultures, there may be times when travelers accidentally annoy their host.

    The same gesture can have very different meanings in different countries. The gesture meaning OK in the United States means something completely different in Brazil as Ella Yao discovered. Ella had travelled to Brazil to study and was living with a host family. During dinner, her host asked Ella if she was enjoying the meal. Because her mouth was full of food, Ella made a sign with her hand that to her meant OK. Although Ella meant the food was good, this symbol in Brazilian culture is extremely rude and her host was deeply annoyed.

    While travelling in Thailand, Elizabeth Brown learned that there are differences in food in the United States and Thailand. She stopped at a small, family-owned restaurant in Chiang Mai and ordered spring rolls. She was really enjoying eating them until she got the last one and noticed that there was an insect inside. She complained to the server. Later, she discovered that although insects are disgusting to most Americans, they are considered a delicacy(佳肴) in some countries.

    All these mistakes can be avoided with some research on cultural differences before you go abroad. However, if you do accidentally annoy someone, quickly apologize, and learn from your mistake.

    A new research has discovered that meditation(冥想)and oxygen sport together reduce depression. The Rutgers University study found that this mind and body combination, done twice a week for only two months, reduced the symptoms of a group of students by 40 percent.

    “We are excited by the findings because we saw such a meaningful improvement in both clinically depressed and non-depressed students,” said lead author Dr. Brandon Alderman. “It is the first time that both of these two behavioral ways have been looked at together for dealing with depression.”

    Researchers believe the two activities have an interactive effect in combating depression. Alderman and Dr. Tracey Shors discovered that a combination of mental and physical training(MAP) enabled students with major depressive disorder not to let problems or negative thoughts defeat them.

    Rutgers researchers say those who participated in the study began with 30 minutes of focused attention meditation followed by 30 minutes of oxygen sport. They were told that if their thoughts drifted to the past or the future they should refocus on their breathing, which enabled those with depression to accept moment-to-moment changes in attention.

    Shors, who studies the production of new brain cells in the hippocampus—part of the brain involved in memory and learning—says scientists have shown in animal models that oxygen sport exercise keeps a large number of certain cells alive.

    The idea for the human intervention(干预)came from her laboratory studies, she says, with the main goal of helping individuals acquire new skills so that they can learn to recover from stressful life events.

    By learning to focus their attention and exercise, people who are fighting depression can acquire new learning skills that can help them process information and reduce the overwhelming recollection of memories from the past, Shors says.

    “We know these treatments can be practiced over a lifetime and that they will be affective in improving mental health,” said Alderman. “The good news is that this intervention can be practiced by anyone at any time and at no cost.”

    Try this: For an entire day, forget about the clock. Eat when you're hungry and sleep when you're tired. What do you think will happen?

    You may be surprised to find that your day is much like most other days. You'll probably get hungry when you normally eat and tired when you normally sleep. Even though you don't know what time it is, your body does. These patterns of daily life are called circadian rhythms(生理节奏), and they are more than just habits. Inside our bodies are several clocklike systems that follow a roughly 24-hour cycle. Throughout the day and night, our inner clocks direct changes in temperature, body chemicals, hunger, sleepiness and more.

    Everyone's rhythms are different, which is why you might like to stay up late while your sister always wants to go to bed early. But on the whole, everyone is programmed to feel tired at night and energetic during the day. Learning about our body clocks may help scientists understand why problems arise when we act out of step with our circadian rhythms. For example, traveling across time zones can make people wake up in the middle of the night. Regularly staying up late can make kids do worse in tests.

    "There is a growing sense that when we eat and when we sleep are important parts of how healthy we are," says Steven Shea, director of the Sleep Disorders Program at Brigham and Women's Hospital in Boston.

    One way to learn about how our body clocks tick is to mess them up and see what happens. That's what neurologist(神经病学家)Frank Scheer and his workmates did in a recent study. Staying up night after night, their studies suggest, could make kids extra hungry and more likely to gain weight. And regularly sleeping too little, Scheer says, may be one cause of the recent increase in childhood obesity.

    Not long ago, a good friend of mine asked me to help him in a halfway house in Nashville. I agreed and made my way there one evening.

    When I got there, I sat with my friend and talked about how he ended up there. As we talked, another man came up, lighting up his cigarette as he sat down. He had dark, leather skin, and looked like he had endured the sun, the rain, and the wind for long, long time. I couldn't tell how old he was, but I was sure that he was younger than he looked.

    Through a bit of conversation, I found out that he had been on the streets for many, many years.

    Without my asking, he started describing life as a homeless man. How he got food; how he stayed warm; how he got money. And he told me something that caught my attention.

    He said, "You want to know how I keep my stuff safe at night?"

    "Sure," I replied.

    "I put it up in the trees."

    "Why is it safe in the trees?" I asked.

"The homeless are always looking for treasure on the ground— coins, something someone's dropped, half-smoked cigarettes. I know if I put my stuff in the trees, they'll never find it because they never look up. Never. "

    Profound words from an unexpected place. And his message is for all of us.

We all have our particular search. We're looking for treasure on this earth. But what we are REALLY looking for is right there above us. There's really nothing we need on the ground.

    In fact, it's surrounding us.

    Shan Tianfang, died at 83 on Sept. 11, 2018 in Beijing because of multiple organ failure. His energetic oral interpretations of classical Chinese novels and historical events pushed the ancient pingshu tradition forward into the modern age for generations of Chinese.

    Mr. Shan tried for many years to avoid becoming a performer of pingshu, the Song dynasty-era storytelling tradition. Growing up in the1950s in a family of folk art performers, he had seen struggle firsthand. It was a life of constant financial troubles and low social status. So it was with great unwillingness when, out of financial necessity, he became an apprentice(徒弟) to a family friend who was a master of pingshu. He made his first public appearance in 1956.

    In the pingshu tradition, the performer wears a traditional gown and sits behind a desk equipped with a folding fan and a wooden block. The storyteller tells a legend — typically a classical Chinese epic — from memory, using different voices and exaggerated gestures as well as adding occasional background detail and commentary.

    Mr. Shan grew to love the storytelling form, which is popular across northern China. It is a demanding profession that combines acting, oration, writing, historical research and literary criticism and requires countless hours of memorization. In teahouses around the northeastern region, he became famous for his fresh takes on the classics.

    In 1976, many Chinese were hungry for some new forms of entertainment, and it was against this background that he grasped the opportunity to record a pingshu radio broadcast. He soon discovered that performing on radio was vastly different from doing so in teahouses. There were no props(道具), no reactions from the audience to guide him — just Mr. Shan and the microphone in a recording studio. So for his first radio performance, a shortened version of the historical novel. The Romance of Sui and Tang Dynasties, Mr. Shan used the studio's three recording technicians as his audience and adjusted his performance based on their reactions.

    The performance had its first appearance in 1980 on Chinese New Year, and more than 100 million Chinese were estimated to have tuned in during the 56 hours over which it was broadcast. It was the beginning of a dramatic second act both for Mr. Shan and for pingshu in the People's Republic of China. He was soon a household name across the country.

    Over six decades, Mr. Shan recorded more than 110 stories for radio and television totaling about 12,000 episodes and lasting 6,000 hours. His best-known works include his interpretations of Chinese classics like 'White-Eyebrow Hero' and 'Sanxia Wuyi' and his dramatizations of historical figures like Zhuge Liang and Lin Zexu.

    Even today, hop into a Beijing taxi and the driver may be listening to one of Mr. Shan's recordings. "For my generation, Shan Tianfang was a master," said Zhao Fuwei, 48, a Beijing taxi driver. If back then there was such thing as a viral star, then Shan Tianfang was definitely the hottest viral star.

    "Listening to his stories has made it easier to kill time in bad traffic," Mr. Zhao added. "He was so good at making complicated historical stories simple and interesting". You feel like you could empathize with the characters in his stories, even though they lived a long time ago.

    But in recent years many of the great pingshu performers have died, and the tradition is fading. By the time Mr. Shan retired in 2007, interest in pingshu among Chinese had all but been replaced by mobile phones and gaming. Nevertheless, even after retiring, Mr. Shan worked tirelessly to promote pingshu among young Chinese, instructing apprentices and starting a school dedicated to the folk arts.

    Ever willing to adapt to new technologies, he posted a message to his Sina Weibo microblog account on Sept. 6, five days before his death. It was an announcement about a new live-streamed(直播) lecture series about pingshu.

    You've heard of the fat suit and the pregnancy suit; now meet AGNES—the old person suit.

    AGNES stands for "Age Gain Now Empathy(换位体验)System" and was designed by researchers at MIT's AgeLab to let you know what it feels like—physically—to be 75 years old. "The business of old age demands new tools," said Joseph Coughlin, director of the AgeLab. "While focus groups and observations and surveys can help you understand what the older consumer needs and wants, young marketers never get that ‘Ah ha!' moment of having difficulty opening a jar, or getting in and out of a car. That's what AGNES provides. "

    Coughlin and his team carefully adjusted the suit to make the wearer just as uncomfortable as an old person who has spent a lifetime eating poorly and not doing much exercise. Special shoes provide a feeling of imbalance, while braces on the knees and elbows limit joint mobility. Gloves give the feeling of decreased strength and mobility in the hands and wrists, and earplugs make it difficult to hear high-pitched sounds and soft tones. A helmet with straps(带)attached to it presses the spine(脊柱).

    VAGNES has been used most recently by a group of students working on a design of an updated walker. By wearing the suit they could see for themselves what design and materials would make the most sense for a physically limited older person. Coughlin said the suit has also been used by clothing companies, car companies and retail goods companies to help them understand the limitations of an older consumer. An unexpected benefit they've found with AGNES is that it has become a powerful tool to get younger people to invest in their long-term health.