The oddness of life in space never quite goes away. Here are some examples.

    It's common knowledge that sleep problems can be caused by things such as stress, anxiety, or even using a smartphone before bedtime. But recently, a team of researchers discovered that genes could also be a cause of sleepless nights.

    The scientists, from Rockefeller University in New York, US, found that delayed sleep phase disorder（DSPD，睡眠相位后移综合症）, a condition that affects one's sleeping patterns, is passed down via a mutated（突变的）gene. DSPD sufferers wake up later and go to bed later than the average person. To come to their conclusion, the team studied a 46-year-old woman who is only usually able to fall asleep at 2 or 3 in the morning. It was discovered that the woman's body produces the hormone that helps her sleep at night up to 7 hours later than regular sleepers. The scientists found this was caused by a mutation in one of the woman's genes, one that helps regulate the “body clock”.

    Some of the woman's family members were also found to share the same mutation—and the same sleeping problems –leading the scientists to believe that sleep troubles are passed down through the generations.

    However, having this mutation doesn't mean you automatically have sleep problems. The team also found two people who had the mutation but reported no problems with their sleep.

    But while this is an interesting discovery, it offers no help to those who can't fall asleep at night—although there are a few things you could try to help you sleep earlier.

    BBC journalist Michael Mosley produced a TV documentary in May in which he talked about his battle with insomnia（失眠）and the techniques he used. “I avoid social media for at least an hour before bed, I do mindfulness exercises, and if I wake up in the middle of the night, I read a book for an hour or so,” he wrote in an article for the Radio Times.

    Jacob's Pillow Dance Festival

    Where: Becket, Massachusetts

    When: June 15-Aug. 24

    Each summer, this influential dance center presents a number of classes and performances by more than 50 companies from around the world. Highlights(精彩的部分) this season include the Dance Theater of Harlem's production of Alvin Ailey's “The Lark Ascending”, which opens the festival.

    Many events are free. Ticketed performances start at $22.

    Moab Music Festival

    Where: Moab, Utah

    When: Aug. 29-Sep. 9

    This area is better known for mountain biking than for music. But since 1992, it has hosted a private festival that brings classical, jazz, Latin and other types of music to the land. This year there will be 16 concerts, including three “Grotto Concerts”, where guests take a 45-minute boat ride down the Colorado River to performances.

    Events start at $25.

    Cheyenne Frontier Days

    Where: Cheyenne, Wyoming

    When: July 19-28

    There's something for everyone at this 117-year-old festival, from an “Indian village” and Old West museum to country concerts. But the competition is still the main attraction, with cowboys(牛仔) and cowgirls competing for major money in the world's largest outdoor stage.

    Competition tickets start at $18, and concert tickets at $23.

    The Glimmerglass Festival

    Where: Cooperstown, New York

    When: July 6-Aug. 24

    Each summer, opera lovers from around the country (and the world) travel to upstate New York to watch productions that include stars like Nathan Gunn and Ginger Costa-Jackson. This year's performances include Wagner's “The Flying Dutchman” and Verdi's “King for a Day”, in honor of the 200th birthdays of both composers.

    Tickets start at $26.

    "No matter where you are or what time it is there's something going on at a Hard Rock Cafe. All over the world our cafes not only serve great food, but they serve up great music." Hard Rock Cafes around the world symbolize the timeless energy, originality and unifying (团结的) spirit that have helped to shape rock music over the last century.

    Founded by two Americans, the first Hard Rock Cafe (HRC) opened its doors to the public on June 14, 1971, in London. Today, HRC has become a global phenomenon with more than 180 cafes in different countries.

    HRC has also become the world's leading collector and exhibitor of rock ‘n' roll memorabilia. It all started when Eric Clapton, a regular at the first HRC, asked the staff if they could hang his guitar on the wall to mark his favourite stool (凳子) as "his spot". They did and one week later, a package from Pete Townshend arrived with a guitar and a note with the message, "Mine's as good as his! Love, Pete."

    Ever since then, Hard Rock Cafes have been collecting pieces of rock memorabilia and covering their walls with them. Their collection is rotated from restaurant to restaurant and provides the world's most comprehensive "visual history" of rock ‘n' roll. These treasures include an awe-inspiring collection of classic guitars and other instruments, posters, music, etc.

    Throughout its history, HRC has been governed by a special service philosophy: "Love All—Serve All." Since it was established, HRC has taken part in a wide variety of humane activities around the world. Following its idea of being more than just a restaurant, HRC tries to connect its business and its passion to make the earth a safer, healthier and better place to live.

    All in all, Hard Rock Cafe International is an entertainment company that continues to successfully expand the Hard Rock brand through countless music-related activities.

    Thanks to this new hands- free suitcase, carrying around heavy luggage may soon become a thing of the past. Designed by Israeli company NUA Robotics, this "smart" suitcase can follow you everywhere you go.

    The carry­on suitcase, now a prototype(雏形), connects to a smartphone app via bluetooth. It has a built­in camera sensor that can "see" you and follow you around on flat floors. It comes with an anti­theft alarm to prevent someone carrying it away when you're not looking. "It can follow and carry things for people around while communicating with their smartphone, and avoiding bumping into other objects," explained Alex Libman, founder of NUA Robotics. "We're combining sensor network, computer vision, and robotics. So if you download our app(应用), press the 'follow me' button, the luggage recognizes its user and knows to follow and communicate."

    NUA is still testing the products and trying to improve features like speed and customization(客户订制), but they hope to make the suitcase available to customers in a year's time. If it proves successful, they want to use the bluetooth pairing technology to automate(自动化操作)lots of other products, like shopping carts at the supermarket. These products are especially meant to be useful to the physically disabled and elderly. "Any object can be smart and robotic," Libman told Mashable. "We want to bring robots into everyday life."

    The Israeli tech company made it clear that the finished product will look just like a common suitcase. They're planning to partner with a carry­on luggage maker, since the product that makes it "smart" weighs just 2.5 pounds and can be fitted on old­fashion luggage.

    With NUA's smart suitcase, carrying around heavy luggage isn't a burden. But how their invention will handle tough blocks like stairs? It will be interesting to wait.

    One of the best-loved American writers was William Sydney Porter, or O. Henry. From 1893 he lived with his family in a house in Austin, Texas, which is now a museum. Visitors to Austin can see the house. It was saved from destruction (破坏) and turned into a museum in 1934. The museum is a good way to learn about the interesting life of the American writer.

    William Porter rented this house in Austin and lived there with his wife Athol and daughter Margaret for about two years. Many objects in the museum came from the Porters. Others did not. An important piece in the room is the original photo over here. It was taken there in the house about 1895. The piano there dates back to the 1860s. His wife took lessons on it when she first moved to Austin.

    Porter wasn't a successful writer in the beginning. He worked on a farm, in a land office and bank. He also loved words and writing. The museum has a special proof (证明) of Porter's love of language—his dictionary. It is said that he had read every word in that dictionary.

    Later William Porter was forced to leave Austin because he was charged (指控) with wrongdoing at the bank and lost his job. Because he was afraid of a trial (审判), he left the country secretly. But he returned because his wife was dying. After her death, he faced the trial and served three and a half years in a prison in Ohio.

    William Porter would keep his time in prison a secret. But there was one good thing about it. It provided him with time to write. By the time he was freed, he had published 14 stories and became well-known as O. Henry. Porter later moved to New York City and found great success there. He published over 180 stories in the last eight years of his life.