Japan has long been known for both its strong traditions and being on the cutting edge of technology, and this new inn combining the classic Japanese surroundings with high-tech slippers and furniture is a perfect reflection of this.

    Nissan Motor Co. developed a system in which slippers park themselves at the entrance of the traditional inn, called “ProPilot Park Ryokan,” waiting for guests to use them upon arrival. When guests have finished using them, the slippers will drive themselves back to their original position. Each slipper features two tiny wheels, a motor, and sensors to drive it across the wooden floor.

    The same technology features in Nissan's all-battery electric Leaf car. High-tech sensors and cameras allow the vehicle to safely back into parking spaces without any input from the driver. Four cameras and 12 sensors assess the vehicle's surroundings. ProPilot Park handles the accelerator, braking and steering (转向) input when the car is parking. Drivers operate the system with the press of a button, which they must hold down the entire time. Lifting a finger off the button will result in the car stopping immediately.

    The inn, located in the resort town of Hakone, about 75 kilometers southwest of Tokyo, is currently most famous for its view of Mount Fuji. However, the new self-driving slippers, released by Nissan in March, is the unique feature of the high-tech inn.

    “The self-parking slippers are meant to raise awareness of automated driving technologies, and their potential, non-driving applications,” Nissan spokesman Nick Maxfield said in a statement.

    In addition to the slippers, office chairs, floor cushions and traditional low tables in the inn also wheel themselves back into place after use.

Yawning（哈欠）sends out certain messages—either “Oh, this movie is boring" or "I probably need to get some sleep". But did you know that a yawn can also help your brain to cool down when it is so overheated?

    A new study, led by a research team of Princeton University, has indicated（表明）that yawning could be the brain's natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily.com.

    The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.

    When people yawn, their jaw is also stretched, which increases blood flow and may also help cool the brain.

    The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawn. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.

    However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.

    According to Gallup, this is the first report to show that yawning frequencies(频率) change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.

Open Letter to an Editor

I had an interesting conversation with a reporter recently — one who works for you. In fact, he's one of your best reporters. He wants to leave.

    Your reporter gave me a copy of his resume(简历) and photocopies of six stories that he wrote for you. The headlines showed you played them proudly. With great enthusiasm, he talked about how he finds issues(问题), approaches them, and writes about them, which tells me he is one of your best. I'm sure you would hate to lose him. Surprisingly, your reporter is not unhappy. In fact, he told me he really likes his job. He has a great assignment (分工), and said you run a great paper. It would be easy for you to keep him, he said. He knows that the paper values him. He appreciates the responsibility you've given him, takes ownership of his profession, and enjoys his freedom.

    So why is he looking for a way out?

    He talked to me because he wants his editors to demand so much more of him. He wants to be pushed, challenged, coached to new heights.

    The reporter believes that good stories spring from good questions, but his editors usually ask how long the story will be, when it will be in, where it can play, and what the budget is.

    He longs for conversations with an editor who will help him turn his good ideas into great ones. He wants someone to get excited about what he's doing and to help him turn his story idea upside down and inside out, exploring the best ways to report it. He wants to be more valuable for your paper. That's what you want for him, too, isn't it?

    So your reporter has set me thinking.

Our best hope in keeping our best reporters, copy editors, photographers, artists — everyone — is to work harder to make sure they get the help they are demanding to reach their potential. If we can't do it, they'll find someone who can.

    Not long ago, a good friend of mine asked me to help him in a halfway house in Nashville. I agreed and made my way there one evening.

    When I got there, I sat with my friend and talked about how he ended up there. As we talked, another man came up, lighting up his cigarette as he sat down. He had dark, leather skin, and looked like he had endured the sun, the rain, and the wind for long, long time. I couldn't tell how old he was, but I was sure that he was younger than he looked.

    Through a bit of conversation, I found out that he had been on the streets for many, many years.

    Without my asking, he started describing life as a homeless man. How he got food; how he stayed warm; how he got money. And he told me something that caught my attention.

    He said, "You want to know how I keep my stuff safe at night?"

    "Sure," I replied.

    "I put it up in the trees."

    "Why is it safe in the trees?" I asked.

"The homeless are always looking for treasure on the ground— coins, something someone's dropped, half-smoked cigarettes. I know if I put my stuff in the trees, they'll never find it because they never look up. Never. "

    Profound words from an unexpected place. And his message is for all of us.

We all have our particular search. We're looking for treasure on this earth. But what we are REALLY looking for is right there above us. There's really nothing we need on the ground.

    In fact, it's surrounding us.

    Retired judge Davison hated all the quiet. Evy, his wife of 66 ears, had passed away, and he was lonely and sad in the months after her death. But he knew how to beat those feelings; he decided to build a pool.

    Davison contacted a family-run company in Hopkins, Minnesota, that had built a pool for his previous house 40 years ago. “They did such a great job before and were still in business, so they came out and planned it,” Davison said.

    Kevin, who works on new pools for the company, helped Davison with everything, from initial planning and completing contracts back in March to teaching him how to filter the water once the pool was finish in July.

    “If You build it, they will come,” he thought. He invited all the neighborhood kids over to swim. Now it's not so quiet anymore.

    He hears the sounds of laughter and splashing as he sits on a chair in the shade, watching happy children play in his backyard.

    “I knew they'd come.” 94-yvear-old Davison told KARE-TV.

    Neighbor Jessica thought the judge was joking when he talked about putting in a pool until she saw the work starting. Now she and her four kids have been regulars since the pool was finished in July.

    “It's him spreading joy throughout our neighborhood for these kids.” Jessica said.

    Davison's pool includes a diving board and reaches nine feet in the deep end under the board. It's especially welcome in a town that doesn't have a public outdoor pool.

    Although Davison has three adult children, he doesn't have any grandchildren.

Jessica says she's told him, “You kind of adopted our whole neighborhood of kids. These are your grandkids.”

    The judge's rules require that a parent or grandparent stay while the children are swimming. Once the kids leave, he likes to swim, too.

    Davison tells KARE-TV that he realizes that putting in the pool didn't make a lot of financial (经济的) sense for an old man. But that didn't matter to him.

    “I'm not sitting by myself looking at the walls.” he says. “What else would you think of doing where you could have a whole bunch of kids over every afternoon?” The 94-year-old judge now hears laughter all day as he watches children splash in his backyard pool.

    Columbus made four voyages to the west between 1492 and 1504 in his vain（徒劳的）search for a sea route to Asia. The mystery of why he failed to find it haunted（萦绕心头的,耿耿于怀的） him and filled him with sadness.

    Wherever he went to Cuba（古巴）,Puerto Rico（波多黎各）,Jamaica（牙买加）,South America, Panama（巴拿马）,down the coast of Central America—it was always the same story. Instead of golden palaces, there were grass huts and palm-leaf tents. Instead of silk-robed merchant princes, he found "Indians" who did not have so much as a shirt on their backs.

    When Columbus explored the West Indies in 1493,he heard tales of a fierce Indian tribe（凶狠的印第安部落） who literally devoured（吞食） its defeated enemies after a battle. These people were called by many names in the area, including Calina, Canima, Carib, and Caniba. Columbus recorded the name of the American natives as Canibales in Spanish, a word which came to refer, within a few years, to any eater of human flesh（食人部落,食人族）.In the similar fashion, the word Caribbean, a title for the sea as well as for the region, came into English.

    At times Columbus knew that this new land was not China, not Japan, not the Spice Islands. He seemed to accept it as a part of the earth that the geographers of Europe had never heard of before. It was another world—and he called it exactly that—but Columbus also insisted until he died that land he had reached was an unknown part of Asia.