For families on vacation, a playground provides a welcome break. It can also provide a glimpse into the local culture，from the setup of the park to the ways families interact．Here are the designs that live up to that challenge．

Fruit and Scent Playground, Stockholm

    Is there a picky eater on a steady diet of chicken fingers and cheese? Perhaps a trip to Sweden's Fruit and Scent Playground will change his or her culinary(烹饪的)tune. This playground features a banana slide，an orange seesaw，pear huts，a watermelon jungle gym and a pair of cherry swings，all designed by public artist Johan Ferner Strom. Now, who can say you can't play with your food?

Nishi Rokugo Park, Tokyo

    Located between central Tokyo and the city of Kawasaki, Nishi Rokugo combines recycled rubber tires(橡胶轮胎)with traditional playground equipment. In total, more than 3,000 tires of different sizes are used to create tunnels, bridges, tall sculptures for climbing and, of course, tire swings. There's little shade, so you can visit here in the early morning or late afternoon for the most comfortable weather, and be sure to wear your play clothes.

    Bicentennial Children's Park, Santiago, Chile

    Bicentennial Children's playground in Metropolitan Park was built to celebrate 200 years of Chilean independence and improve the lives of Santiago citizens. Dozens of slides are built into the slope, creating a design completely complementary(互为补充的)of the surrounding landscape. Fountains offer some relief from the sun, and ample seating gives parents a place to relax.

    People who often eat nuts appear to live longer, according to the latest study of its kind. The findings, published in the New England Journal of Medicine, suggested the greatest benefit was in those eating them on their daily diet.

    Eating nuts was linked to a healthier lifestyle including being less likely to smoke or be overweight and more likely to exercise. The British Heart Foundation said more research was needed to prove the link, “While this is an interesting link, we need further research to make sure if it's the nuts that protect heart health, or other sides of people's lifestyle .”

    The study followed nearly 120,000 people for 30 years. The more regularly people ate nuts, the less likely they were to die during the study. People eating nuts once a week were 11% less likely to have died during the study than those who never ate nuts. Lead researcher Dr. Charles Fuchs, from the Dana-Farber Cancer Institute and Brigham and Women's Hospital, said, “The most obvious benefit was a decrease of 29%in deaths from heart disease, but we also saw a significant reduction-11%- in the danger of dying from cancer.”

    They suggest nuts are lowering cholesterol(胆固醇). and insulin resistance(胰岛素抗性). Nuts contain unsaturated fat(不饱和脂肪), protein(蛋白质) and several kinds of vitamins and minerals and they can take the place of snacks like chocolate bars, cakes and biscuits.

    Victoria Taylor, senior expert at the British Heart Foundation, said, “This study shows close connection between regularly eating a small handful of nuts and a lower risk of death from heart disease.” Choosing plain, unsalted foods rather than sweet, salted, or chocolate-covered will keep your salt and sugar intake down.

    Businesses are finding more uses for Virtual Reality (VR) as the technology develops. VR is no longer only for gaming or enjoyment. An American company called Blue Goji is using VR to improve one's health by making exercise more fun.

    Blue Goji has offices in Austin, the capital of Texas. The company showed its cardiovascular (心血管的) workout machine, called the Infinity treadmill (跑步机), at the recent South by Southwest festival, an event held every year in Austin.

    A person using the treadmill wears a virtual reality headset when exercising. Before starting, the user tightens a belt to prevent falls. Then, the user plays a VR game while running on the machine. The game can transport the user into the virtual world, where he or she can be racing against virtual people.

    Recently, Leonardo Mattiazzi tested the Infinity treadmill. Mattiazzi said he had a strong feeling to actually get running and do something that pushed his limits. He said the experience was more interesting than running inside the gym without actually going anywhere.

    Constam said the active use of virtual reality helps solve a common problem while wearing a VR headset. She noted that a lot of VR experiences cause motion sickness because people are in motion during the game, but not moving in real life. But when the user is moving on the treadmill and in the game, the chances of motion sickness are reduced.

    However, users who tested the treadmill while wearing the VR headset each had a different experience. Constam said there generally is a learning curve for VR. The first time users feel lost, but "the more you do it, the more you get used to it," she said. Mark Sackler was a first time user. He said he felt a little sick at one point during the game. But he thought the experience was surprisingly realistic.

    After carefully studying the users' experiences, Blue Goji plans to make the treadmill available to the public in 2019.

    I.M. Pei, the Chinese-American, who was regarded as one of the last great modernist architects, has died at the age of 102.

    Although he worked mostly in the United States, Pei will always be remembered for a European project: His redevelopment of the Louvre Museum in Paris in the 1980s. He gave us the glass and metal pyramid in the main courtyard, along with three smaller pyramids and a vast subterranean (地下的) addition to the museum entrance.

    Pei was the first foreign architect to work on the Louvre in its long history, and initially his designs were fiercely opposed. But in the end, the French—and everyone else—were won over. Winning the fifth Pritzker Architecture Prize in 1983, he was thought as giving the 20th century "some of its most beautiful inside spaces and outside forms … His talent and skill in the use of materials approach the level of poetry."

    After studying architecture at the Massachusetts Institute of Technology and Harvard, Pei set up his own architectural practice in New York in 1955.

    Designing the John F. Kennedy Presidential Library & Museum in 1964 established him as a name. His East Building of the National Gallery of Art in Washington in 1978 changed people's ideas of a museum. The site was an odd trapezoid (梯形) shape. Pei's solution was to cut it in two. The resulting building was dramatic, light and elegant—one of the first crowd-pleasing cathedrals of modern art.

    Though known as a modernist, and notable for his forms based on arrangements of simple geometric (几何的) shapes, he once urged Chinese architects to look more to their architectural tradition rather than designing in a western style.

    In person, I.M. Pei was good-humored, charming and unusually modest. His working process was evolutionary, but innovation (创新) was never an intended goal.

    "Stylistic originality is not my purpose," he said. "I want to find the originality in the time, the place and the problem."

    I became a magician by accident. When I was nine years old, I learned how to make a coin disappear. I'd read The Lord of the Rings and risked coming into the adult section of the library to search for a book of spells (魔法) — nine being that curious age at which you're old enough to work through more than 1, 200 pages of mysterious fantasy literature but young enough to still hold out hope that you might find a book of real, actual magic in the library. The book I found instead taught basic sleight-of-hand (戏法) technique, and I devoted the next months to practice.

    Initially, the magic wasn't any good. At first it wasn't even magic; it was just a trick — a bad trick. I spent hours each day in the bathroom running through the secret moves in front of the mirror. I dropped the coin over and over, a thousand times in a day, and after two weeks of this my mom got a carpet sample from the store and placed it under the mirror to eradicate the sound of the coin falling again and again.

    I had heard my dad work through passages of new music on the piano, so I knew how to practice — slowly, deliberately, going for precision rather than speed. And then I tried the illusion (错觉) in the mirror and an unbelievable scene took place. It did not look like a magic trick. It looked like a miracle. I knew that I had got what I wanted.

    One day I made the performance on the playground. We had been playing football and were standing by the backstop in the field behind the school. A dozen people were watching. I showed the coin to everyone. Then it disappeared. The kids screamed. They yelled, laughed, scrambled away. Everyone went crazy. This was brilliant.