In our daily life, we have developed a lot of habits, such as, eating habit, study habit, reading habit, etc. However, taking the time to develop a sleep habit is probably the last thing on your mind and some sleep advice simply can't be forgotten. {#blank#}1{#/blank#}.

Watching TV until you fall asleep

    It has nothing to do with what you watch —TV news isn't a better pre-sleep choice than TV series. {#blank#}2{#/blank#}. The bright light keeps you awake all the night. So even if you nod off (in front of the TV, for example), you probably won't stay asleep for long.

Sleeping with pets

    {#blank#}3{#/blank#}. They get comfortable, and then they move. This goes on all night, and whether you admit it or not, it interrupts your ability to get the level of sleep needed to feel rested.

Eating fatty, heavy foods too close to bedtime

    Heartburn (烧心，胃痛) strikes anyone of any age, but it's the most common GI disorder (胃肠失调) in older adults. If you've ever tried to go to sleep after eating a fatty meal, you've probably found the discomfort of stomach preventing you from falling asleep or staying asleep.

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    Remember how poorly you sleep when you have a fever—turning over and over again, never really feeling rested? Well, heavy exercise too close to bedtime has the same effect — it raises your body temperature so that your sleep is disturbed until your body temperature drops to normal, which may take several hours.

Accepting snoring (打呼噜) as normal sleep behavior

    Snoring may seem as common as breathing, but it's considered the biggest sleep killer, and it's linked to several causes: sleeping on your back, being overweight, having a cold, drinking, or taking drugs. {#blank#}5{#/blank#}. For the snorer, it disturbs sleep by awakening him/her every so often in order to breathe normally. For the partner, the noise can be unbearable.

    An Oceans Vacuum

    There's a collection of plastic trash in the middle of the Pacific Ocean. It's bigger than Texas-and growing. The way to clean it up now is to catch it with nets. That is both costly and slow. Instead, the Ocean Cleanup Project proposes 62-mile-long floating barriers that would use natural currents to trap trash. If next year's trials succeed, a full cleanup operation would aim to start in 2020. It could reduce the trash by 42% over 10 years.

    Easy-On Shoes

    In 2012, Mathew Walzer, a high school student with a disability, sent a note to Nike. “My dream is to go to college,” he wrote, “without having to worry about someone coming to tie my shoes every day.” Nike assigned a design team to the challenge. This year, they came out with their solution: the FlyEase. The basketball shoe can be fastened with one hand. A pair of Nike FlyEase shoes sells for $130.

    An Airport for Drones(无人机)

    As Amazon, Google, and others get ready for drone delivery service, there is one big question: what kinds of home bases will their drones have? Rwanda, in Africa, may have the answer. There, workers will soon start work on three “drone ports”. The goal is to make it easier to transport food, medical supplies, electronics, and other goods through the hilly countryside. Construction is set to be completed in 2020.

    Reading may be fundamental, but how the brain gives meaning to letters on a page has been a mystery. Two new studies fill in some details on how the brains of efficient readers handle words. One of the studies, published in the April 30 Neuron, suggests that a visual-processing area of the brain recognizes common words as whole units. Another study, published online April 27 in PLOSONE, makes it known that the brain operates two fast parallel systems for reading, linking visual recognition of words to speech.

    Maximilian Riesenhuber, a neuroscientist at Georgetown University in Washington, D. C. , wanted to know whether the brain reads words letter by letter or recognizes words as whole objects. He and his colleagues showed sets of real words or nonsense(无意义的词语)words to volunteers undergoing FMRI scans. The words differed in only one letter, such as “farm” and “form” or “soat” and “poat”, or were completely different, such as “farm” and “coat”or “poat” and “hime”.The researchers were particularly interested in what happens in the visual word form area, or VWFA, an area on the left side of the brain just behind the ear that is involved in recognizing words.

    Riesenhuber and his colleagues found that neurons(神经元)in the VWFA respond strongly to changes in real words. Changing “farm” to “form”, for example, produced as great a change in activity as changing “farm” to“coat”, the team reports in Neuron. The area responded slowly to single-letter changes in made-up words.

    The data suggests that readers grasp real words as whole objects, rather than focusing on letters or letter combinations. And as a reader's exposure to a word increases, the brain comes to recognize the shape of the word. “Meaning is passed on after recognition in the brain”, Riesenhuber says.

    The researchers don't yet know how longer and less familiar words are recognized, or if the brain can be trained to recognize nonsense words as a unit.

    WeChat, the Chinese social media smartphone app, saw an increase in user numbers of 41 percent year on year to 500 million at the end of last year, in a sign that parent company Tencent is extending its reach for the mobile Internet. As one of the largest Internet integrated service providers in Chinaand one of the most Internet users in China, Tencent's profit grew 24 percent to RMB 20.98 billion per year, slightly higher than forecasts, driven mainly by online gaming profits. It is unclear how much WeChat contributed to Tencent's profits but the app's growth is a strong indicator of the company's long-term health as it tries to adjust its business to be more suitable for mobile devices.

    "We extended our leadership in games and online media, and made breakthroughs in emerging platforms such as online security and mobile payments." Ma Huateng, Tencent chairman, said in a statement. WeChat is the second highest ranked social app in China, behind QQ, Tencent's another chatting app, which claimed to have 815 million registered monthly users at the end of 2014.

    Tencent has been unwilling to earn money through WeChat by flooding it with advertising, which could influence the users' experience. But this is expected to change. Some analysts anticipated(预期) that advertising would be introduced on a large scale later this year. Early attempts to test ads on the service have not always gone smoothly. After a BMW ad was introduced on some users' feedbacks in January, many users who were not targeted by the brand's marketing complained of "discrimination" by Tencent's data mining algorithm(数据挖掘算法). They claimed it unfairly treated them as not wealthy or successful enough to view the BMW ad.

At Englands University of Plymouth, Professor Eduardo Miranda has been programming pairs of robots to compose music. Miranda's robots have simple " vocal cords" (声带)and are programmed to sing and to listen to each other. The robots' unique warbling sounds (颤音) do not perfectly match the human voice, but each machine is exactly sharing music with the other in a new and unique way.

Each robot is equipped with speakers, software that mimics the human voice, a mouth that opens as it "sings," a microphone for ears, and a camera for eyes. The robots also move. Miranda hopes that by studying his robot vocalists, he can discover something about how and why humans create, perform, and listen to music.

When the robots sing, first one robot makes six random sounds. Its partner responds with more sounds. The first robot analyzes the sounds to see if their sequences (序列)) are similar. If they are, it nods its head and commits the sounds to memory, and the second robot notices and "memorizes" the musical sequence, too. If the first robot thinks the sounds are too different, it shakes its head and both robots ignore the sounds. Then the process continues.

Miranda set up an experiment in which he left the two robots alone in his study for two weeks. When he returned, his little warblers had, by imitating each other, not only shared notes but combined them. The product of their cooperation was far from symphonic, but the robots had begun to combine the notes into their own self-developed "songs".

With the help of his warbling robots, one of Miranda's goals is to create music that no human would ever compose. Miranda believes the robots are ideal for this purpose because they would not be influenced by any existing musical styles or rules.

Fans of art believe that its main purpose is to make us look at life from many different angles. When it comes to Cubism(立体主义), however, the artists of this era wanted us to look at life from every angle. 

The father of Cubism, Spanish artist Pablo Picasso, is among the art world's most famous names. Like many other great names before him, he felt restrained by the rules of his teachers and decided to do something: break them. 

Early in his painting career, Picasso realized something important about how people view and remember scenes of beauty. When we look at a subject, we don't just see it from one angle, as many paintings appear. Instead, we study the subject from a number of different angles, heights and viewpoints. This is the aim of Cubism: It portrays(描绘) subjects from a wide range of angles; it doesn't force us to see things as the artist viewed them at the time he or she painted them. To bring his visions to life, Picasso and other Cubists took the most basic components of a subject and rearranged them in a way which let us see it in full detail. 

"By breaking objects and figures down into distinct areas, Picasso aimed to show different viewpoints at the same time and within the same space," in the words of the Tate Institution. Or as Lithuanian—born Cubist Jacques Lipchitz once put it: "Cubism is like standing at a certain point on a mountain and looking around. If you go higher, things will look different; if you go lower, again they will look different."

Cubism stood out as it was an art movement which didn't just rely on the artist to share their vision by painting what they saw. As cubist paintings mainly show their subjects in a deconstructed form, this means that viewers must use their imaginations to find the missing pieces for themselves. As Guardian art critic Johnathan Jones noted, this is part of the beauty of enjoying Picasso's works. "If you can relax your gaze(凝视)enough and just enjoy the painting long enough, something really amazing happens. Your mind produces a solid feeling of the things Picasso was looking at. the world is revealed in its majesty(壮观)," he wrote.