On Saturday my Catalan friend invited me to come along to a Calotada. Being from the UK, I had no idea what this would need, but he promised me it was a fun Catalan(卡塔兰)tradition, and so I agreed to go. I wasn't disappointed!

First, we took a train out to a small town near Tarragona, about an hour away from Barcelona centre. I was already amazed by how different everything looked from the city as the train rushed through small towns, all sitting on the coastline.

When we arrived, we were greeted by the sight of a small wind instrument band and about a dozen people dancing in a circle. While my friend later told me that it is a traditional Catalan dance called La Sardana, at the time I was totally confused at what I was seeing! It seemed so strange but yet so lovely that they were doing this dance completely for themselves.

Once we had been fully entertained by the dancers, we finally went inside for the Calotada and it was soon revealed to me what it actually was. We sat down at the table and a huge plate of leeks(大葱)was placed in front of us. It was explained to us that you have to peel the leeks with your fingers, dip them in a (delicious!) sauce and eat them. This sounds easier than it was.

    My friend had been right in the end, it had been an extremely fun day and it felt great to get involved in a local tradition of a place I am temporarily calling home. It really inspired me to learn more about the Catalan culture, although hopefully next time it will be something less messy!

    Mexico sites on an island plateau (高原) surrounded by volcanic peaks, which makes air quality a constant concern for people who live there.

    In April, the country took a decisive step toward improving air quality by enacting a temporary ban on private and Federal vehicles in the city. The rule forbids people from driving in the city one day each week and one Saturday each month. Electric vehicles, government service vehicles, public transport options and school buses are not included in the ban.

    Mexico City isn't the first urban center to be involved in car-free living. But the ban is more than an awareness-raiser. It was enacted with the direct aim of solving air pollution. In March, the city sank into a deep brown haze of smog when the pollution levels passed the 200 mark. The city ordered some 1.1m of the area's 4.7m cars off the streets and also offered free bus and subway rides.

    Mexico City's temporary vehicle ban raises questions about the best ways to improve urban air quality. India, whose citizens breathe some of the world's dirtiest air, has tried a variety of solutions. Earlier this year, the Indian government started a 4% sales tax on new-car purchases.

    Beijing also has experience with cleaning the air. The city introduced alternate-day rules in advance of the 2008 Olympic Games, which produced good results. And then there is the London congestion (拥挤) charge, introduced in 2003. The charge has had a measurable effect on air quality.

For now, Mexico City — named by the United Nations as the most polluted city on the planet in 1992 — can look forward to the start of the region's rainy season, when daily showers will help lo clean the air.

    Experts say moods are feelings that tend to become fixed, influencing one's outlook for hours, days or even weeks. That's great if your mood is a pleasant one, but a problem if you are sad, anxious, angry or simply lonely.

    Perhaps the best way to deal with such moods is to talk them out; sometimes, though, there is no one to listen. Modern pharmacology（药理学）offers a lot of tranquilizers（镇静剂）. What many people don't realize, however, is that scientists have discovered the effectiveness of several non – drug methods to set you loose from an unwanted mood. These can be just as useful as drugs, and have the added benefit of being nonpoisonous. So next time you feel out of sorts, don't head for the drug – store but try the following methods.

    Of all the mood – altering self – help techniques, aerobic exercise（有氧运动）seems to be the most efficient cure for a bad mood. "If you could keep up the exercise you'd be in high spirits," says Kathryn Lance, author of Running for Health and Beauty.

    Researchers have explained biochemical and various other changes that make exercise compare favorable to drugs as a mood raiser. Physical work such as housework, however, does little. The key is aerobic exercise —running, cycling, walking, swimming or other repetitive and sustained activities that increase the heart rate, increase blood circulation and improve the body's use of oxygen. Do some of the activities for at least 20 minutes a session three to five times a week.

Flying High

    Barrington Irving made his historic flight and founded an educational non-profit-making organization. His message for kids: "The only thing that separates you from scientists is determination, hard work and a strong liking for what you want to achieve." The secret, he believes, is having a dream in the first place, and that starts with learning experiences that inspire kids to build careers.

    The moment of inspiration for Irving came at the age of 15 in his parents' bookstore. One customer, a professional pilot, asked Irving if he'd thought about becoming a pilot. "I told him I didn't think I was smart enough; but the next day he took me to the cockpit (驾驶舱) of the commercial airplane he flew, and just like that I was hooked."

    To follow his dream, Irving turned down a football scholarship to the University of Florida. He washed airplanes to earn money for a flight school and increased his flying skills by practising at home on a $40 flight simulator (模拟) video game. Then another dream took hold: flying alone around the world. He faced more than 50 rejections for sponsorship before convincing some companies to donate aircraft components. He took off with no weather radar, no de-icing system, and just $30 in his pocket. "I like to do things people say I can't do."

    After 97 days, 26 stops and dozens of thunderstorms, he touched down to a cheering crowd in Miami. "It was seeing so many young people watching and listening that pushed me into giving back with my knowledge and experience." Irving has been doing it ever since. He set up his non-profit-making organization, Experience Aviation (航空), aiming to increase the numbers of youth in aviation and science-related careers. Kids attend programmes dealing with hands-on robotics projects and flight simulator challenges.

    "We want to create chances for students to accomplish something amazing," he notes. Perhaps Irving's most powerful educational tool is the example his own life provides. After landing his record-breaking flight at age 23, he said, "Everyone told me I was too young, that I didn't have enough experience, strength, or knowledge. They told me it would take forever and I'd never come home. Well… guess what?"

    Closeness and independence are both important in our life. Though all humans need both of them women tend to focus on the first and men on the second. It is as if their lifeblood ran in different directions.

    These differences can give women and men differing views of the same situation, as they did in the case of couple I will call Tracy and Brian. When Brian's old high school friend called him at work and announced he'd be in town on business the following month, Brian invited him to stay for the weekend. That evening he informed Tracy that they were going to have a houseguest, and that he and his friend would go out together the first night to chat like old times. Tracy was upset. She was going to be away on business the week before, and the Friday night when Brian would be out with his friend would be her first night home. But what upset her the most was that Brian had made these plans on his own and informed her of them, rather than discussing them with her before extending the invitation.

    Tracy would never make plans, for a weekend or an evening, without first checking with Brian. She can't understand why he doesn't show her the same courtesy and consideration that she shows him. But when she protests, Brian says, "I can't say to my friend, 'I have to ask my wife for permission'!"

    To Brian, checking with his wife means seeking permission, which implies that he is not independent, not free to act on his own. To Tracy, checking with her husband makes her feel good to know and show that she is involved with someone, that her life is bound up with someone else's.

    Tracy and Brian both felt upset by this incident because it cut to the core of their primary concerns. Tracy was hurt because she sensed a failure of closeness in their relationship: He didn't care about her as much as she cared about him. And he was hurt because he felt she was trying to control him and limit his freedom.

After releasing a short video on April 27 about planting and cooking peas, Chinese food blogger Li Ziqi witnessed her followers on YouTube go beyond 10 million.

This puts Li, who shot to fame with short videos recording her traditional and peaceful lifestyle in China's countryside, among the ranks of the most popular Chinese-language content creators on the platform.

"It's really surprising. I didn't expect such a wide response," Li told Xinhua in an interview, noting she was surprised by how foreign fans were taken with her works. "What I present is just a lifestyle I've long followed and appreciated," she said. "Maybe it's also what many other people have valued."

Li's YouTube videos center on her life with her grandmother in the rural parts of Sichuan Province. In the videos, Li, often dressed in graceful traditional dresses, rises at sunrise, rests at sunset, plants seeds and harvests flowers, cooks Chinese dishes and crafts bamboo furniture. Unlike many other food bloggers, Li's videos set China's countryside as the stage and start with how the foods are planted and harvested on the farm. She rarely speaks in the process.

Li's overseas followers have praised her videos for showing the amazingly charming, simple and beautiful side of China's rural life, but back home, there have long been debates on whether her presentation is unrealistically poetic.

In response, Li, who was raised in the countryside, said she never needs special arrangements when shooting a video about rural life as "everything is in my mind." "In the countryside, planting flowers, vegetables and trees is not difficult. There are tough elements of rural life of course, but I didn't put them in my videos," Li said. "Most people today are facing much stress in work and life, so I hope they can feel relieved and relaxed when watching my videos."