It all started in 2013, when Shea Stollenwerk, then eight years old, asked for a new hand for Christmas. Shea was born with a partial right hand, which restricts her ability to do things that other kids take for granted.

    “My mom went online”, says Shea, who lives in Muknowango, Wisconsin. Shea's mother, Ranee, soon learned about a community of artists, designers, and scientists who are making big breakthrough with artificial hands.

    Frankie Flood, a professor at the University of Wisconsin in Milwaukee, was among the designers who saw Ranee's online request. Flood obtained help from fellow professor Adeam Blair and their students, who were learning how to make designs using a 3-D printer. “We made a mold(模子) of Shea's hand out of plaster(石膏), and then we 3-D scanned her hand,” Flood says.

    While being fitted in Flood's laboratory, Shea got to choose the color of her new hand. She went with bright pink. She now has a pink hand, a purple hand, and a purple and pink one, and can do things that she couldn't do before, like peeling potatoes, picking up objects, and catching a ball.

    Flood and his team have since built hands for six other local children. Indirectly, they have helped dozens more by posting their designs online so that people around the world can print them out. Flood is also working on artificial legs for military soldiers who were injured on the battlefield. “Without a covering, the artificial leg is kind of ugly and plain,” Flood says. “Soldiers want something that will restore the shape of their legs and make them look cooler when they're playing sports.”

    As for Shea, the aspiring musician can now play her violin with the help from an adaptive device that Flood's team created. “Nothing is ever going to hold her back,” Shea's father, Steve, told a local reporter.

    Can you imagine printing food? Some scientists are trying to revolutionize the dining experience by doing this. They hope that having a 3D printer in the kitchen will become as commonplace as the microwave. Scientists say that they are easy to use:you simply have to select a recipe and put the raw food "inks" into the printer. You can also change the instructions to make the food exactly how you want it. This means that it would be very quick and easy to create tasty and nutritious meals.

    They say that if people used 3D printers to create meals there would be less need for traditional growing, transporting and packaging processes as food production would be a lot easier. For example, alternative ingredients (原料) such as proteins from insects could be changed into tasty products. And as is known,those traditional activities are not beneficial to our surroundings.

    This technology could also help people who suffer from dysphagia (a swallowing disorder).The patients could program the printer and softer versions would be made so that they would not have trouble swallowing them.

    However,some people think that using 3D-printed foods would be a disaster. It could take away many jobs,including those for growing,transporting and packaging food. Imagine a world where there was no need for farming or growing crops and the same tastes could be printed from a raw "food ink". Likewise, traditional cafes and restaurants might lose business. Also, there are concerns about the nutritional value of printed food:is it really possible to get the nutrients we need from food-based inks?

    What's more, cooking and eating together with family and friends has long been a traditional and enjoyable activity. It is hard to imagine a world where the pastime of cooking is dead and meals can be created at the touch of a button.

    Have you ever been to London? Here is some hotel information for you.

    Kingsway Hall Hotel

    We offer quality service (优质服务) in Kingsway Hall Hotel. This location puts guests in easy reach of many places, such as the British Museum and Piccadilly Circus. Our hotel also has modern Western food, and offers a perfect dining environment. The lounge bar is a comfortable place to enjoy a drink while watching the tourists. There are hundreds of dining choices within walking distance. Non-smoking rooms are ready for guests.

    Hilton Docklands Riverside

    Located on the bank of the Thames, our hotel is about two miles east of Tower Bridge and 36 miles from London Heathrow Airport. Our hotel has a beauty salon, a flower shop and a swimming pool. The hotel also offers different kinds of service：laundry (洗衣店) services, babysitting, shining shoes, and local area transportation.

    Windermere Hotel

Located in the center of London, our hotel puts guests within easy reach of London's well-known buildings. Buckingham Palace and the Royal Parks are just a short walk away. Within 1.5 miles you can visit Westminster Abbey and the Houses of Parliament. The theatres, Harrods shopping centre, and the designer shops of Sloane Square and Knightsbridge are all only a short walk away or a taxi ride away.

    “At almost any given age, most of us are getting better at some things and worse at others, ”Joshua Hartshorne, an MIT cognitive(认知的)science researcher and the lead author of a study looking at how intelligence changes as we age, told Business Insider. His team quizzed thousands of people aged 10—90 on their ability to do things like remembering lists of words, recognizing faces, learning names, and doing math. Their results suggest that no matter your age, there's almost always a new peak on the horizon.

    The human brain has a remarkable capacity to recognize and identify faces, and scientists are just beginning to learn why. On average, we know that our ability to learn and remember new faces appears to peak shortly after our 30th birthday.

Having trouble focusing? The study suggests that our ability to maintain attention improves with age, reaching its peak around age 43.While younger adults may excel in the speed and flexibility of information processing, adults approaching their mid-years may have the greatest capacity to remain focused.

    Dating is tough. One of the reasons could be that we're generally bad at reading other people's emotions until we reach our late 40s.That's according to one component of Hartshorne's study, which involved showing thousands of people images of faces cropped tightly around the eye area. Participants were asked to describe the emotion the person in the photo was feeling. Performance peaked for people aged around 48.

    Many people believe that their math skills decline after they leave school and stop practicing arithmetic. But the next time you try to split up a check, keep this in mind: your ability to do basic subtraction and division doesn't reach its apex until your 50th birthday.

    Ever wonder why you always lose at Scrabble? Good news: Your best days may be ahead. According to people's scores on multiple—choice vocabulary tests, most of us don't reach our peak wordsmithing abilities until we're in our late 60s or early 70s.

    AHerb Garden

    A delightful walled garden with old varieties of fruit trees and flower borders, Herb Garden is planted with over 200 medical and culinary(烹饪用的)herbs. Dogs on leads(狗链) are welcome to woodland walks. Children's activity sheets are available.

    Open Time: 10:00a. m—5:00p. m, daily except Mon. and Tue.

    Tearoom: 11:00a. m—4:30p. m

    Shop:10:00a. m—5:00p. m

    Price: Adult:￡3 Child: ￡1. 50

    The Beatrix Potter Gallery

    Original sketches(素描) and watercolors by Beatrix Potter for her children's tales. This year's exhibition will feature The Tale of Mrs. Tiggy-Wrinkle and The Tale of the Pie. Also on display is information on Beatrix Potter's life. Children's quiz sheets and goods bags are available.

    Open Time: 10:30a. m—4:30p. m, daily except Thur. and Fri.

    Price: Adult:￡3.50 Child: ￡1.70

    Hill Top

    Beatrix Potter wrote and drew for many of her famous children's stories in this farm house. You can view her personal treasures and step into the garden which is planted with flowers and vegetables, just as it would have been in Beatrix Porter's time.

    Please note that this is a small and popular house, which gets very busy especially on school holidays. At peak time there are queues and by the end of the day not all visitors may be able to visit the house. Please collect a timed ticket from the park for your car parking on your arrival. Tel: 051394 36269

    Open Time: 10:30a. m—4:30p. m, daily except Thur. and Fri.

    Shop and garden: Thur. and Fri. ,10:00a. m—5:00p. m

    Price: Adult:￡5 Child: ￡2

At just 18 years old, Khalifa Aminu from Kano, Nigeria, has proved himself as an amazing inventor, with his sensory glasses designed to help the visually impaired (视障人士).

The glasses are fitted with infrared sensors (红外传感器) that can "see" obstacles in the user's path, warning them about possible dangers without the need for traditional walking sticks or guide dogs. In their current form, the glasses let out a beeping sound when an object is nearby, helping users move past it safely. Aminu is now working on making the glasses even more effective, particularly in low-light and nighttime conditions.

Aminu's journey into the world of invention began in childhood. He started small, building a canoe (独木舟) as his first project, and quickly realized that his creations could be used to solve real-world problems in his community. This love for invention has led him to create various innovations such as a radio station, a bomb detector and an automatic water sprayer for farmers.

As for how Aminu came up with the idea of his latest creation, Aminu explained, "I grew up in an area where there are visually impaired people, and I understand what they're going through. This is why I began the process for a technology-based solution for them."

The glasses have received positive feedback from testing. In a recent trial, a blind man was highly impressed by their effectiveness. "He suggested several improvements, like a wireless switch, smaller parts, and lenses for better usability," Aminu explained. "These suggestions will be carried out in future versions, but the challenge remains the lack of materials and resources for further development."

Luckily, in June, Aminu's invention caught the attention of Nigeria's National Commission for Persons with Disabilities, suggesting a bright future for him in further innovation and mass production. "My ultimate dream is to build a global company that continues to develop innovative technological solutions not only for Nigeria but for the world," said Aminu.