“Our aim is to take our art to the world and make people understand what it is to move,” said David Belle, the founder of parkour(跑酷).

    Do you love running? It is a good exercise, yet many people find it boring. But what if making your morning jog a creative one? Like jumping from walls and over gaps, and ground rolls? Just like the James Bond in the movie Casino Royale? Bond jumps down from a roof to a windowsill and then runs several blocks over obstacles on the way. It is just because of Bond's wonderful performances that the sport has become popular worldwide.

    Yes, that's parkour, an extreme street sport aimed at moving from one point to another as quickly as possible, getting over all the obstacles in the path using only the abilities of the human body. Parkour is considered an extreme sport. As its participants(参与者) dash around a city, they may jump over fences, run up walls and even move from roof top to roof top.

    Parkour can be just as exciting and charming as it sounds, but its participants see parkour much more than that.

    Overcoming all the obstacles on the course and in life is part of the philosophy(理念) behind parkour. This is the same as life. You must determine your destination, go straight, jump over all the barriers as if in parkour and never fall back from them in your life to reach the destination successfully. A parkour lover said, “I love parkour because its philosophy has become my life, my way to do everything.”

    Another philosophy we've learnt from parkour is freedom. It can be done by anyone, at any time, anywhere in the world. It is a kind of expression of trust in yourself. It is only a state of mind. It is when you trust yourself that you earn energy.

    Most damagingly, anger weakens a person's ability to think clearly and keep control over his behaviour. The angry person loses objectivity in evaluating the emotional significance of the person or situation that arouses his anger.

    Not everyone experiences anger in the same way; what angers one person may amuse another. The specific expression of anger also differs from person to person based on biological and cultural forces. In contemporary culture, physical expressions of anger are generally considered too socially harmful to be tolerated. We no longer regard duels (决斗) as an appropriate expression of anger resulting from one person's awareness of insulting behaviour on the part of another.

    Anger can be identified in the brain, where the electrical activity changes. Under most conditions EEG (脑电图) measures of electrical activity show balanced activity between the right and left prefrontal (额叶前部) areas. Behaviourally this corresponds to the general even-handed disposition (意向) that most of us possess most of the time. But when we are angry the EEG of the right and left prefrontal areas aren't balanced and, as a result of this, we're likely to react. And our behavioural response to anger is different from our response to other emotions, whether positive or negative.

    Most positive emotions are associated with approach behaviour: we move closer to people we like. Most negative emotions, in contrast, are associated with avoidance behaviour: we move away from people and things that we dislike or that make us anxious. But anger is an exception to this pattern. The angrier we are, the more likely we are to move towards the object of our anger. This corresponds to what psychologists refer to as of ensive anger: the angry person moves closer in order to influence and control the person or situation causing his anger. This approach-and-confront behaviour is accompanied by a leftward prefrontal asymmetry (不对称) of EEG activity. Interestingly, this asymmetry lessens if the angry person can experience empathy (同感) towards the individual who is bringing forth the angry response. In defensive anger, in contrast, the EEG asymmetry is directed to the right and the angry person feels helpless in the face of the anger-inspiring situation.

    “To educate a girl is to educate a thousand people,” says Maimouna Samaké, a mother of six children (including five girls). “If you put one seed in the ground and rain comes, it will grow to produce many seeds.”

    Samaké, one of 2,000 residents, lives in a small village, Sounkala, in one of the world's poorest countries. Now she has a chance to see this wish come true thanks to Build On, an American non-profit organization that is building a school in her community.

    For 17 years, build On has been sending American high school students overseas to create schools in places where literacy (文化) and formal education are usually out of reach. The organization has built about 300 schools in Mali, Malawi, Nepal, Senegal, Nicaragua and Haiti. Its goal is to get young Americans in mostly urban areas to get involved in education. At the same time it can bring literacy to children and adults in poor villages in the developing world.

    Sounkala's current school only has about 70 children; mud floors, poor lighting, few desks and an absence of books mean that the school is not the most ideal learning environment. Therefore they certainly could use Build On's help.

    Samaké hasn't been to school, but she wants a better future for her five daughters, including Ramatou, 12, and Mariam, 10. “When a woman attends school, she will teach what she learns to her children,” said Ramatou, who wants to become a doctor. “She will also know how to take better care of her family.”

    Build On tries to build schools for grades one to three. If things go well over those three years, they return to help build another school for grades four to six, and then set up evening adult literacy classes.

    Ramatou and Mariam will not learn inside the walls of build On school since they are already in the sixth grade, but Samaké hopes that they will be able to attend evening classes to continue learning.

    Best Travel Guides by Continent

    We've broken down (分类)the best travel guides, by continent, to help you find student discounts and travel like a local on your next adventure.

    Europe—let's Go Europe 2019: The Students Travel Guide

    Let's Go was founded about 56 years ago when a Harvard student had an idea to provide accessible, budget travel tips for young people. Students love its amusing pages. let's Go Europe 2018 has everything you need for your trip—from the best beer in Brussels to how to avoid the lines at the Louvre.

    Africa—The Rough Guide to Cape Town, the Winelands, and the Garden Route

    With its colorful photos and detailed tips on how to make the most of South Africa, The Rough Guide is the book to get when visiting Africa. You may not have access to Google Maps when you're out exploring but that's OK. The Rough Guide also comes with easy use to maps. It can be purchased as an eBook, or as a paperback (平装本).

    Asia—Lonely Planet: South –East Asia on a Shoestring

    This guide is perfect for those backpacking through the hidden treasures of South-East Asia. With detailed recommendations from experts in the area, this guide helps first-times as well as experienced backpackers. This book can be purchased as a paperback travel guide. A download for an eBook or separate chapters can be purchased to serve as a guide to specific cities.

    North America—Lonely Planet USA Travel Guide

    With detailed reviews of the best places to eat, sleep, and explore, Lonely Planet is linked with budget-friendly attractions and that is why it makes our best travel guides list. This travel guide is available in paperback.

    Off the Beaten Cart Path

    The best-selling travel book which includes over 200 new places of interest, over 200 new full-color photographs, and all-new, up-to-date maps. It includes over 1,000 of the United States' most must-see destinations

    Cover price: $ 30.00 Our price: $ 19.80

    Parents

    The most popular magazine for parents who want to raise smart and loving children. It has child development guidance, advice on your child's health and safety, and the best way to encourage your child's learning

    Cover Price: $ 26.00 Our price: $ 12.60

    Best Weekend Projects

    The projects are chosen from 80 special ideas to create an unusual living space. They are practical, as well as creative. They will improve your home and yard and can be made on weekends. And the most important of all, they are easy to follow.

    Cover Price: $ 17.95 Our price: $ 13.90

    Lucky

    The shopping magazine with the best buys, and the fashion tips. You'll need them before you go to the stores. What makes Lucky really special is that it gives you the information you need before anyone else has it.

    Cover Price: $ 18.50    Our Price: $ 15.50

Earthquake rescue robots have experienced their final tests in Beijing.Their designers say with these robots，rescuers will be able to have more time to save more lives during an earthquake.

This robot，looking like a helicopter，is called the detector bot.It's about 4 meters long，and it took about 4 years to develop the model.Its main functions are to collect information from the air，and send goods of up to 30 kilos to people trapped by an earthquake.

This robot has a high－definition 360－degree panoramic(全景的) camera.It can work day and night and will also be able to send the latest pictures from the quake area.

Dr.Qi Juntong，from the Chinese Academy of Science，said，"The most important feature of this robot is that it doesn't need a distant control.We just set the destination(目的地) information on it，and then it takes off，and lands by itself.It flies as high as 3，000 meters，and as fast as 100 kilometers per hour."

This robot has a different function—it can change as the environment changes.Its main job is to search for any signs of life in places where human rescuers are unable to go.

As well as a detector(探测器) that finds victims and detects poisonous gas，a camera is placed in the 40－centimeter－long robot，which can work in the dark.

Another use for the rescuers is the supply bot.With its 10－meter－long pipe，people who are trapped in the ruins，will be able to get supplies including oxygen and liquids.

Experts have said that the robots will enter production，and serve as part of the national earthquake rescue team as soon as next year.