In France, a man walks on what can only be described as a human-sized hamster wheel. The wheel moves around and around, as the man keeps walking. What is he doing? He is lifting a heavy object to the top of a tower the same way workers moved such objects 800 years ago.

    In the 13th century, workers did not have the 100-meter tall cranes they now use to build tall buildings. So they had to be creative and come up with simple machines to get their work done.

    The man on the large wheel is walking at a reasonable speed. The wheel turns and pulls a rope connected to a pulley(滑轮)at the top of the tower. Another rope tied to the pulley lifts supplies from the ground.

    This is just one way skilled craftsmen arc building a 13th-century castle without using modern tools. Crew have been working on the castle since 1997. It is being built in the Burgundy area of central France. Organizers expect the work to last another 10 to 15 years. That means it will take close to 30 years to finish the project.

    The crew are making progress at about half the speed of the workers from 800 years ago. That is because many of them are accustomed to using modern tools. When the crew use heavy chisels(凿子）and hammers to break rock, as they did hundreds of years ago, they are learning as they go. The goal of the project is to learn more about old building techniques in case they might be of use today.

    Clement Guerard, 44,is a stonemason; he cuts and builds with stone. He has been working on the tower for 17 years. He said one way he is able to work on something like this for so long is by forgetting “some of the pace of modern life", he is able to adapt to working by hand.

    Recently, online hike-sharing has become the new favorite in China. In major cities, bikes in, yellow, orange, blue, white and green, can be seen almost everywhere on the street. It seems that these bikes appeared suddenly, adding a new beautiful scenery to Chinese cities.

    Both the market and the public welcome online bike-sharing, but is it really a promising business? Well, it depends. After all, online bike-sharing platforms can never get away with huge operating cost and uncertain government policy.

    Some theorists might say that online bike-sharing platforms can earn a fortune simply through deposit. Since users will always need to rent bikes, their deposit will always be kept to online bike-sharing platforms.

    However，although online bike-sharing platforms may be able to use the deposit for other purposes at the primary stage, they will have to set up a special account, so that the deposit shall be used specially for its designated (指定的) purpose. As the market gets increasingly mature, they will have to do so whether to be responsible for users or in consideration of possible government regulations.

    Now that online hike-sharing platforms can，t make profit through deposit，how can they become profitable as fiercer market unfolds? Although Hu Weiwei, CEO of Mobike, stated in an article that she would take Mobike as charitable(慈善的) project if she failed, running a startup is absolutely different from managing a charity organization. After all , she has to pay back investors' billions of investment(投资).

    To make profit, online bike-sharing platforms might have toincrease rent fee for each trip, just as Didi did

    From this aspect, it might be a really good business. If we consider full screen ads fee, recommendation fee for business owners, etc. , its annual income might reach at least RMB 15 billion. If we consider the huge operation cost, including bike repairs，bikes' service life and labor cost, there might not be much net profit left. After all, offline operation cost has always been an unbearable burden for such internet plus mode-based startups.

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Food festivals around the world

Stilton Cheese Rolling

    May Day is a traditional day for celebrations, but the 2,000 English villagers of Stilton must be the only people in the world who include cheese rolling in their annual plans. Teams of four, dressed in a variety of strange and funny clothes, roll a complete cheese along a 50-metre course. On the way, they must not kick or throw their cheese, or go into their competitors' lane（赛道）. Competition is fierce and the chief prize is a complete Stilton cheese weighing about four kilos (disappointingly, but understandably the cheeses used in the race are wooden ones). All the competitors arc served with beer or port wine, the traditional accompaniment for Stilton cheese.

Fiery Foods Festival—The Hottest Festival on Earth

    Every year more than 10,000 people head for the city of Albuquerque, New Mexico. They come from as far away as Australia, the Caribbean and China, but they all share a common addiction—food that is not just spicy（辛辣）,but hot enough to make your mouth burn, your head spin and your eyes water. Their destination is the Fiery Food and BBQ Festival which is held over a period of three clays every March. You might like to try a chocolate-covered habanero pepper—officially the hottest pepper in the world—or any one of the thousands of products that are on show. But one thing's for sure—if you don't like the feeling of a burning tongue, this festival isn't for you!

La Tomatina—The World's Biggest Food Fight

    On the last Wednesday of every August, the Spanish town of Bunol hosts Ea Tomatina—the world's largest food fight. A week-long celebration leads up to an exciting tomato battle as the highlight of the week's events. The early morning sees the arrival of large trucks with tomatoes—official fight-starters get things going by casting tomatoes at the crowd.

    The battle lasts little more than half an hour, in which time around 50,000 kilograms of tomatoes have been thrown at anyone or anything that moves, runs, or fights back. Then everyone heads down to the river to make friends again—and for a much-needed wash!

    The 14-year-old, Amit Dodani, a talented speaker and persuasive debater at school, suffered as a child from a speech disorder.

    He began working with a speech therapist (理疗师) when he was 6 years old, but it was his decision to try out for debate team at the end of seventh grade that helped him most.

    “That experience changed my life,” he wrote after his team went on to nationals. “It gave me hope, and helped me see my own true potential.”

    Since he launched MynameMystory last year, the site has attracted national and even international attention. Amit's mom said her son's website is meant to send a message that no one is alone in their experience, showing how people overcame their challenges and how others can, too.

    “The big thing that clicked in Amit was the belief that people are really needed (to help each other) in this country,” she said. “I wasn't surprised he wanted to do this, because at such a young age he had this spirit in him.”

    In addition to the website, Amit also wanted to expand the idea of sharing stories. So he asked his friends and classmates to donate books to distribute to local hospitals. He hoped to collect perhaps 1,000, but in just two weeks, he received more than 2,300 donations.

    “There was an absolute connection between the website and books,” Amit said. “But books are something that can really make a difference to someone who is in the hospital and can't go to school.”

    Amit said he's hoping to organize a large live event for MynameMystory at the end of this year at Chaminade High School in West Hills. Those who shared their stories on the website will be invited to speak and encourage others to share their stories of overcoming challenges.

    “We're hoping for big things,” Amit said. “We have a lot of events planned out for the future. The goal is basically to inspire people in a different way.”

    Are you interested in movie musicals? Here are some best movie musicals you need to watch.

    Singin' in the Rain (1952)

    Debbie Reynolds (the heroine) is ultra-charming in this time-honored classic musical about the coming of the talking pictures in movie history. She plays a winning showgirl with a golden singing voice designed for Hollywood stars. You can also see how Gene Kelly (the hero) made a hit in the timeless "Singin'in the Rain".

    The Sound of Music (1965)

    It hit the big screen in 1965 and became an early blockbuster. It's one of those movies that everybody watches again and again. Whether you're singing along to "Do-Re-Mi" or "My Favorite Things", you'll still think of the cute Von Trapp children and the beautiful Austrian setting. Christopher Plummer (the hero) is wonderful as the serious captain melts into gentleness when singing "Edelweiss". And Julie Andrews (the heroine) shows her addictive voice in such songs as "I Have Confidence".

    Chicago (2002)

    Renee Zellweger and Catherine Zeta-Jones sing and dance as criminals in this musical about fame, envy, and murderous love. Famous songs include "Cell Block Tango", where female criminals sing about how they ended up in jail. It won Best Picture, Best Actress in a supporting role, Best Art Direction-Set Decoration, Best Costume Design, Best Film Editing, and Best Sound in Oscar 2003.

    La La Land (2016)

    Struggling actress Mia (Emma Stone) and ambitious jazz pianist Sebastian (Ryan Gosling) begin a romance as they both follow their heart in the path of their dreams in Los Angeles. It won Best Performance by an Actress in a leading role, Best Achievement in Directing, Best Achievement in Cinematography, Best Achievement in Music Written for Motion Pictures, and Best Achievement in Production Design in Oscar 2017.

    Naturalist John Muir called the Marin County woods named for him "the best tree-lover's monument that could possibly be found in all the forests of the world."

    Located only 11 miles north of the Golden Gate Bridge near San Francisco, California, USA. Muir Woods puts some of nature's most huge creations within reach of little feet, hands, and imaginations.

    "Muir Woods is home to a small forest of redwood trees that reach to the sky," says David Shaw of the Golden Gate National Parks Conservancy. "Redwoods grow taller than any other tree species in the world. The average age of the redwoods here ranges from 400 to 800 years old and many ancient specimens have been around for more than a thousand years."

    William Kent, the man who donated the 295 acres to create the Muir monument, grew up in Marin and played in similar redwood forests. That childhood experience inspired him to save the redwoods as an adult.

    "Young people can learn about young William Kent when they visit here," says ranger(护林员) Timothy Jordan. "Kent's early connection with nature developed his love of the outdoors. As an adult, he witnessed the destruction of many Bay Area redwood forests. This, with the writings of John Muir, inspired Kent's conservationism."

    Walking (and playing)in, on, and around the redwoods will help kids understand why young Kent was so fascinated(深深吸引) by the trees. Ranger Jordan encourages children to lie down and look up at the treetops, hug a redwood tree, and start a nature journal like John Muir.

    "Have kids find a redwood spray(小树枝)the same age as them, count the rings in trees, and sit inside of a hollow redwood tree on Fern Creek." he advises.

    After all the interaction, the kids just may be ready to rest. Take this time to "be quiet and listen to the sounds of the forest," says Shaw. "Encourage kids to think about how these trees have stood quietly through year after year of rain, sun, and sometimes even snow."