A medical study has shown that excess(过度的)coffee drinking could cause heart attacks in people who do not metabolize(使新陈代谢)caffeine fast enough.

    The study, published recently in the Journal of the American Medical Association, says an enzyme(酶)that metabolizes caffeine in the liver works differently in some people, depending on the make­up of the gene(基因). People who have a slow version (版本)of the enzyme are at a greater risk(风险)of a heart attack when they drink more coffee. The risk had something to do with a person's age and how many cups of coffee he drinks.

    The team from the University of Toronto in Canada studied 4,024 people living in coffee­rich Costa Rica between 1994 and 2004, of whom half suffered non­fatal(非致命的)heart attacks. They found slightly more than half had the slow version of the gene, while the rest had the fast form.

    Two to three cups of coffee a day increased the possibilities of a heart attack by 36 percent for those with the slow­acting gene and four or more cups a day lifted it by 64 percent.

    But those under 50 who had the fast version of the gene had a lower risk of heart disease, even with four or more cups a day.

    Those with the fast­acting gene who drank two to three cups of coffee a day had 22 percent reduced possibilities of having a heart attack, but drinking four or more cups a day only lessened the risk by 1 percent. Scientists recommend limiting coffee consumption(消耗量)to within four cups a day.

    Dutch masters exhibition in Beijing

    The 17th century Dutch Golden Age had several significant artists and a range of great pieces produced during the period—including Jan Vermeer's Young Woman at Virginal, Jan Lievens' Boy in a Cape, and Turban and Rembrandt's Self-Portrait with Shaded Eyes.

    Some of the most refined examples of the time, including the three pieces mentioned above, will make their debut（首次亮相）in China as part of a world tour of The Leiden Collection.

    If you go:

9 a.m.-5 p.m., June 17-Sept 3 (closed on Mondays).National Museum of China, I Wusi Avenue, Dongcheng district. 010-6400-1476.

Ticket: 50 yuan ($7)

    The Age of Mechanical Reproduction

    The Age of Mechanical Reproduction, the latest exhibition at the Riverside Art Museum, features 41 artworks of US pop icon Andy Warhol, covering art installations, paintings and photographs. Warhol's well-known installation Electric Chair is a highlight of the show, which is also its debut in Asia.

    If you go:

10 a.m.-5 p.m., through August 28 (closed on Mondays).The Riverside Art Museum, Hongyan Road, Chaoyang district. 010-5309-2062.

Ticket: 60 yuan

Back with a bang

    Beijing-based hand Escape Plan will hold a concert in Beijing this weekend. The band is most famous for the song The Brightest Star in the Night Sky.

    If you go:

7:30 p.m., June 17.Beijing Worker's Gymnasium, Gongti Beilu, Chaoyang district. 400-610-3721.

Ticket: 280-980 yuan

Purple clay teapots

    Yixing purple clay potteries are a vital part of Chinese pottery culture and have been included in China's list of national intangible cultural heritage（国家非物质文化遗产）.A selection of more than 80 purple clay teapots will go on display at the Poly Art Museum starting Friday. The exhibit will include a range of delicate teapot works of Ji Yishun, Wang Xiaolong and Gao Lijun, who are all inheritors（继承人）the time-honored（历史悠久的）pottery handicraft.

If you go:

    9:30 a.m.-4:30 p.m.(closed on Sundays),through June 30.Poly Art Museum, New Poly Plaza,1 Chaoyangmen North Street 9.010-6500-8117.

Ticket: 20 yuan

    Have you ever noticed that the more you have the more you want？Let's face it. Thinking our life is good enough doesn't come naturally to many people. When we have high expectations of everything in life we will run into disappointment. Only when we are aware that needs are different from desires can we live with satisfaction. Here are a few ideas to help you be happier with what you have and who you are.

    Focus on what you are thankful for. Most people want things to be better than they are, or when things are going well, we forget to appreciate what we have. Learn to reflect on how much better things are than they could be. Focus on what you are thankful for. Write down 5 things you are grateful for right now.

    When we hold onto regrets from decisions we have made, it can really poison our wellbeing. Many people regret something they can no longer change, which ends up holding them back from moving forward in a more positive manner. What happened in the past is done and gone, so work to stay present and be mindful of the current moment to find more joy and fulfillment.

    When we use other people as the measuring stick for our personal success and quality of life, we are likely to be less satisfied. Social comparisons can provide useful information when we try to learn from others, but they also hold our perspective in a discontented position. Compare yourself less with others so you can be satisfied more.

    When you are focused on your big ambitions and future goals, you might elide the daily pleasures that surround you. Learn to slow down and absorb the wonder and beauty around you. Stay present and focus on the task you're undertaking at the moment. Don't let the life pass you by because you're always on the go and distracted by ambition.

    Practice looking at life through the lens of contentment and it will become more natural.

Our Annual Cultural Events

    A Night in Rio

    We are proud to bring the energy and enthusiasm of Brazilian Carnival to Charlotte with A Night in

    Rio! Get a taste of Carnival through dancing, live music, authentic food, drinks and marketplace. Put on your green and yellow, and join us for the unforgettable experience of Brazilian Carnival!

    Date: Saturday, February 24, 2018

    TICKETS AVAILABLE ONLY AT THE DOOR

    Location: Neighborhood Theatre, Charlotte

    Time: 7 PM

    Ritmo & Sabor

    We are thrilled to bring the annual celebration Ritmo & Sabor Festival! Featuring dance performances and FREE dance lessons and delicious, authentic Latin cuisine, this festival will be a fantastic celebration for the entire family to enjoy! Food and beer will be available for purchase. Come out to enjoy a great summer evening of Ritmo & Sabor!

    Date: Saturday July 2, 2018

    Location: International & Cultural Center, Charlotte

    Time: 5-11 PM

    FREE ADMISSION

    Las Américas

    Join us in the annual celebration LAS AMÉRICAS! We display our history and identity of Latin America through musical performances, story-telling and poetry. Enjoy yourself with local artists, shop your way through a market of arts and crafts and join in some of the finest Latin American cuisine.

    Date: August 18, 2018

    Location: Midwood International & Culture Center, Charlotte

    Time: 2-7 PM

    Admission is FREE.

    Latin American Festival

    Festival Latinoamericano returns for its 28th year, with musical artists and dance performances, a diverse authentic selection of Latin American food, visual artists, and a street festival environment with activities for the whole family.

    Location: Symphony Park at South Park Mall, Charlotte

    Date: Saturday Sept. 29 (1-8pm)

    Admission: $10; Children aged 8 & under are free.

    Self-driving cars have been backed by the hope that they will save lives by getting involved in fewer crashes with fewer injuries and deaths than human-driven cars. But so far, most comparisons between human drivers and automated vehicles have been unfair.

    Crash statistics for human-driven cars are gathered from all sorts of driving situations, and on all types of roads. However, most of the data on self-driving cars' safety have been recorded often in good weather and on highways, where the most important tasks are staying in the car's own lane and not getting too close to the vehicle ahead. Automated cars are good at those tasks, but so are humans.

    It is true that self-driving cars don't get tired, angry, frustrated or drunk. But neither can they yet react to uncertain situations with the same skill or anticipation of an attentive human driver. Nor do they possess the foresight to avoid potential perils. They largely drive from moment to moment, rather than think ahead to possible events literally down the road.

    To a self-driving car, a bus full of people might appear quite similar to an uninhabited corn field. Indeed, deciding what action to take in an emergency is difficult for humans, but drivers have sacrificed themselves for the greater good of others. An automated system's limited understanding of the world means it will almost never evaluate (评估) a situation the same way a human would. And machines can't be programmed in advance to handle every imaginable set of events.

    Some people may argue that the promise of simply reducing the number of injuries and deaths is enough to support driverless cars. But experience from aviation (航空) shows that as new automated systems are introduced, there is often an increase in the rate of disasters.

    Therefore comparisons between humans and automated vehicles have to be performed carefully. To fairly evaluate driverless cars on how well they fulfill their promise of improved safety, it's important to ensure the data being presented actually provide a true comparison. After all, choosing to replace humans with automation has more effects than simply a one-for-one exchange.