The Verizon Innovative App Challenge gives kids a chance to create apps that can solve problems in their community.

    Do you want to make a difference in your community? The Verizon Innovative App Challenge can get you started. The first step is to think of a problem in your community. The next step is to create an app that can solve the problem.

    Groups of five to seven students in middle school or high school, led by a teacher, can enter the contest. First, teams compete on a local level. Teams that make it to the next round receive $5,000 for their schools. Finalists present their app ideas to judges in a live webinar (网络研讨会)．

    Next, the judges pick national winners. The top eight teams receive an additional $15,000 for their schools, and each team member receives a Samsung tablet. Plus, the winning teams get the chance to bring their app to life.

    A group of six girls from Los Fresnos, Texas, won the second annual Verizon Innovative App Challenge. They came up with the Hello Navi app concept, short for “hello navigation”. The app was designed to help visually­impaired (视力受损的) students navigate their school by using an internal compass and voice­over technology. Read more about the team in September 19, 2016 issue of TIME For Kids: Edition 3－4.

    Do you have an app idea that could help solve a local issue? The deadline to register is November 24, 2016. Find more information and register your team at www. verizonfoundation. org/appchallenge.

    Here are some tips from the Verizon Foundation to get you started：

•Get your team together for a brainstorming meeting. Write out all the ideas that come to mind.

• Don't ignore challenges. Think of the problems that exist in your community.

•Ask family, friends, and people in your community to share their thoughts about problems that they want to see solved.

    Hummingbirds(蜂鸟) are one of nature's most energetic fliers and the only birds to hover(盘旋) in the air by relying on their strength alone.

    Now scientists have found that it is the ratio(比值) of the bird's wing length to its width that makes them so efficient. The discovery is helping experts compete with 42 million years of natural selection to build helicopters that are increasingly efficient.

    David Lentink, an assistant professor at Stanford University in California, tested wings from 12 different species of hummingbirds, which he sourced from museums. He placed them on a machine used to test the aerodynamics(气力学) of the helicopter blades(桨叶). Professor Lentink's team used the same machine to test the blades from an advanced micro-helicopter used by the UK's army. They found that the micro-helicopter's blades are as efficient at hovering as the average hummingbirds.

    But while the micro-helicopter's blades kept pace with the average hummingbird wings, they could not keep up with the most efficient hummingbird's wing. The wings of Anna's hummingbird were found to be about 27 percent more efficient than the man-made micro- helicopter's blades.

    While Professor Lentink wasn't surprised at nature's superiority, he said that helicopter blades have come a long way. “The technology is at the level of an average hummingbird,” he said. “A helicopter is really the most efficient hovering device that we can build. The best hummingbirds are still better, but I think it's amazing that we're getting closer. It's not easy to match their performance, but if we build better wings with better shapes, we might match hummingbirds.”

    Professor Lentink said that we don't know how hummingbirds maintain their flight in a strong wind, how they navigate(确定方向) through branches, or how they change direction so quickly. He thinks that great steps could be made by studying wing aspect ratios-the ratio of wing length to wing width. Understanding these abilities and characteristics could be a benefit for robotics and will be the focus of future experiments.

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     Books at Amazon :Best sellers of the month—Feb, 2018

    Freshwater by Akwaeke Emezi—February 6, 2018

    Hardcover :$15.91Audio CD :$29.99

    An extraordinary novel. Freshwater explores the amazing experience of having another self. It centers around a young Nigerian woman, Ada, who develops separate selves within her as a result of being born “with one foot on the other side.” Freshwater is a sharp call of a rare way of experiencing the world, one that shows how we all construct our identities.

    Milk and Honey by Rupi Kaur—February 16 , 2018

    Hardcover: $ 18. 00 Paperback: $ 8.99 Audio CD :$8.99

    A collection of poetry and prose (散文)about survival. About the experience of violence, abuse(虐待), love , loss, and femininity (女性). It is split into four chapters ，and each chapter serves a different purpose. Deals with a different pain. Heals a different heartache. Milk and Honey takes readers through a journey of the most bitter moments in life and finds sweetness in them because there is sweetness everywhere;if you are just willing to look.
     Educated by Tara Westover—February 13, 2018

    Hardcover: $ 16.80 Paperback: $ 28.00 Audio book: $6.00 Audio CD :$8.99

    An unforgettable biography about a young girl who, kept out of school, leaves her survivalist family and goes on to earn a PhD from Cambridge University. Educated is an account of the struggle for self-invention. It is a tale of fierce family loyalty, and of the sadness that comes from severing one's closest ties.

    Force of Nature by Jane Harper—February 20, 2018

    Hardcover: $17.10 Paperback: $ 23.41 Audio book:Free Audio CD :$ 34. 15

    An attractive novel from the author of the Sunday Times top 10 best seller. Five women go on a hike. Only four return. When five colleagues are forced to go on a corporate retreat in the wilderness , they reluctantly pick up their backpacks and start walking down the muddy path. But one of the women doesn't come out of the woods. And each of her companions tells a slightly different story about what happened.

Maths and Music

    An excellent way to kill a conversation is to say you are a mathematician. Tell others you are also a musician, however, and they will be hooked. Although there are obvious similarities between mathematical and musical activity, there is no direct evidence for the kind of magical connection many people seem to believe in.

    I'm partly referring here to the "Mozart effect", where children who have been played Mozart compositions are supposedly more intelligent, including at maths, than other children. It is not hard to see why such a theory would be popular: we would all like to become better at maths without putting in any effort. But the conclusions of the experiment that expressed the belief in the Mozart effect were much more modest. If you want your brain to work better, you clearly have to put in hard work. As for learning to play the piano, it also takes effort.

    Surely a connection is quite reasonable. Both maths and music deal with abstract structures, so if you become good at one, then it is likely that you become good at something more general that helps you with the other. If this is correct, it would show a connection between mathematical and musical ability. It would be more like the connection between abilities at football and tennis. To become better at one, you need to improve your fitness and coordination (协调). That makes you better at sport and probably helps with the other.

    Abstract structures don't exist only in maths and music. If you learn a language then you need to understand its abstract structures like grammar. Yet we don't hear people asking about a connection between mathematical and linguistic (语言的) ability. Maybe this is because grammar feels mathematical, so it wouldn't be surprising that mathematicians were better at learning grammar. Music, however, is strongly tied up with feelings and can be enjoyed even by people who know little about it. As such, it seems different from maths, so there wouldn't be any connection between the two.

    Let's see how we solve problems of the "A is to B as C is to D" kind. These appear in intelligence tests but they are also central to both music and maths. Consider the opening of Mozart's Eine Kleine Nachtmusik (小夜曲). The second phrase is a clear answer to the first. The listener thinks: "The first phrase goes upward and uses the notes of a G major chord (和弦); what would be the corresponding phrase that goes downward and uses the notes of a D7?" Music is full of puzzles like this. If you are good at them, expectations will constantly be set up in your mind. The best moments surprise you by being unexpected, but we need the expectations in the first place.

    WELCOME TO THE VIRTUAL REALITY CINEMA AMSTERDAM

    World's First Virtual Reality Cinema

    Going to the VR CINEMA offers you the opportunity to watch movies like you've never done before. You can see 360 degree movies using a VR headset. In the VR CINEMA, ringing mobile phones and noisy visitors belong to the past. Furthermore, traditional red cinema chairs or the big white screen are nowhere to be found. Instead, a Samsung Galaxy S6 (smart phone) together with the Samsung Gear VR (virtual reality glasses) transports you to a completely new world. Headphones shut out background noise, and above all, offer super sound quality. Turning chairs allow you to freely look around and see what's happening above, below, behind, in front, on the right and on the left side of you. So no sore neck, we promise.

    In the VR CINEMA, you will experience 30 minutes of the coolest virtual reality films. We proudly present four film selections in different themes in order to please every virtual reality lover. Are you brave enough for our scary films? Will you immerse (沉浸于) yourself in VR documentaries from around the globe? Do you prefer to go on an adventurous journey like no other? Or do your kids want to swim with dolphins, interact with magical characters, and experience the moving stories beyond imagination? Supernatural, Documentary, Journey and Fun are waiting for you!

    For kids, young and older ones, there's the cheerful and colourful selection. The only thing you have to do is sit back, relax and enjoy the VR experience of your choice.

    Location: Oosterdokskade 5, 1011 AD Amsterdam The Netherlands

    Tel: +31(0) 6 27 00 69 16

    E-mail: mail@thevrcinema.com

    Ticket Price: ￡12.5

    Opening hours: Wednesday, Thursday & Friday: 14:00-21:00

    Saturday & Sunday: 12:00-22:00

    For as long as we've known about it, humans have searched for a cure for cancer. Across the world, countless amounts of time and money have been spent on researching a way to stop this terrible disease. But now, it seems like the answer could have been inside our own bodies the whole time.

    Recently, the Food and Drug Administration (FDA) in the US, a government agency that's responsible for healthcare, approved a new form of gene therapy (疗法) that could mean the end of a certain type of cancer.

    The therapy allows scientists to "train" the immune (有免疫力的) cells of sick patients to fight leukemia (白血病)—a form of blood cancer that mostly affects young people.

    The exciting new treatment works by removing healthy immune cells from the patient, known as T-cells, which are then changed to be able to "hunt down" cancer cells.

    The cells are then put back into the patient before they begin to get rid of the patient's leukemia over time, similar to how the body fights off other illnesses.

    "This is truly an exciting new day for cancer patients," Louis J. DeGennaro, president of the Leukemia and Lymphoma Society, said in a news release.

    Up until now, a long and painful marrow transplant (骨髓移植) was the only option for many leukemia patients.

    In this procedure, healthy blood cells are taken from a donator and placed into the sick patient, who also has to go through chemotherapy (化疗) to allow their body to adjust to the new cells.

    But with a recovery rate of around 83%—according to a news release published by the FDA—it's hoped that the days of painful trips to the hospital, or even death, are over for leukemia sufferers.

    "We're entering a new frontier in medical innovation (创新) with the ability to reprogram a patient's own cells to attack a deadly cancer," FDA representative Scott Gottlieb said in the release. "New technologies such as gene and cell therapies hold the potential to transform medicine and our ability to treat and even cure many incurable illnesses."