Most people agree that honesty is a good thing. But does Mother Nature agree? Animals can't talk, but can they lie in other ways? Can they lie with their bodies and behavior? Animal experts may not call it lying, but they do agree that many animals, from birds to chimpanzees, behave dishonestly to fool other animals. Why? Dishonesty often helps them survive.

    Many kinds of birds are very successful at fooling other animals. For example, a bird called the plover sometimes pretends to be hurt in order to protect its young. When a predator（猎食动物）gets close to its nest, the plover leads the predator away from the nest. How? It pretends to have a broken wing. The predator follows the "hurt" adult, leaving the baby birds safe in the nest.

    Another kind of bird, the scrub jay, buries its food so it always has something to eat. Scrub jays are also thieves. They watch where others bury their food and steal it. But clever scrub jays seem to know when a thief is watching them. So they go back later, unbury the food, and bury it again somewhere else.

    Birds called cuckoos have found a way to have babies without doing much work. How? They don't make nests. Instead, they get into other birds' nests secretly. Then they lay their eggs and fly away. When the baby birds come out, their adoptive parents feed them.

    Chimpanzees, or chimps, can also be sneaky. After a fight, the losing chimp will give its hand to the other. When the winning chimp puts out its hand, too, the chimps are friendly again. But an animal expert once saw a losing chimp take the winner's hand and start fighting again.

    Chimps are sneaky in other ways, too. When chimps find food that they love, such as bananas, it is natural for them to cry out. Then other chimps come running. But some clever chimps learn to cry very softly when they find food. That way, other chimps don't hear them,  and they don't need to share their food.

    As children, many of us learn the saying "You can't fool Mother Nature." But maybe you can't trust her, either.

    AlphaGo is a computer program that plays the board game Go.

    In March, 2016, the pride of humankind was crushed (粉碎) by a computer. Google's AlphaGo defeated the South Korean grandmaster (围棋大师) Lee Sedol four games to one, as the world looked on with shock and awe (敬畏). Artificial intelligence (AI, 人工智能) had suddenly reached a new and unexpected height.

    But as smart as AlphaGo is, it's no longer the best Go “player” in the world. Google's artificial intelligence group, DeepMind, has created the next generation of its Go-playing program, called AlphaGo Zero. The new AI program is unique in the way it learned to play Go. Instead of learning from thousands of human matches, as its predecessor (前任) did, AlphaGo Zero mastered Go in just two days without any human knowledge of the game and defeated AlphaGo by day three, reported The Guardian. It then went on to defeat AlphaGo 100 games to zero.

    To learn how to play Go, AlphaGo Zero played millions of matches against itself using only the basic rules of the game to rapidly create its own knowledge of it. Like the previous version, it used “reinforcement (增强) learning to become its own teacher,” according to DeepMind's website.

    “It's more powerful than previous approaches,” David Silver, AlphaGo's lead researcher, told The Guardian, “because by not using human data, or human expertise in any fashion, we've removed the constraints (约束) of human knowledge and it is able to create knowledge itself.”

    AlphaGo Zero's approach to self-learning is a significant advancement in AI that could be applied to help solve some of the world's biggest problems, according to a recent research report published in the journal Nature. For example, DeepMind co-founder Demis Hassabis argues that AlphaGo Zero could probably find cures for a number of serious diseases within weeks, according to The Telegraph. Indeed, the AI is now being used to study protein folding, which is connected to diseases such as Parkinson's and Alzheimer's.

    So now that AI has exceeded (超过) the bounds of human knowledge, perhaps the question is not about what AI can learn from humans, but what humans can learn from AI. We can only wait and see.

    "Everybody is a genius.But if you judge a fish by its ability to climb a tree,it will live its whole life believing that it is stupid."—Albert Einstein

    If you have a kid with special needs in the school system,chances are you have come across that saying hanging on a classroom wall.My five-year-old daughter Syona has cerebral palsy（脑瘫）and it means,combined with her communication and sight problems,that normal standard isn't always an accurate measure of her abilities.

    By now you have probably heard about Chris Ulmer,the 26-yearold teacher in Jacksonville,Florida,who starts his special education class by calling up each student individually to give them much admiration and a high-five.I couldn't help but be reminded of Syona's teacher and how she supports each kid in a very similar way.Ulmer recently shared a video of his teaching experience."I have seen their confidence increase rapidly."he said.All I could think was: how lucky these students are to have such good teachers.

    Syona's teacher has an attitude that can best be summarized in one word: awesome.Her teacher doesn't focus on what can't be done—she focuses on what can be done.Over the past several months,my husband Dilip and I have seen Syona's confidence increase tenfold.She uses words she wouldn't have thought of using before.She recently told me about her classmate's trip to Ecuador and was very proud when I understood her on the first try.

    I actually wonder what the influence would be if we did something similar to what Ulmer does with his students in our home.We've recently started our day by reminding each other of the good qualities we all possess.If we are reminded of our strengths on a regular basis,we will become increasingly confident about progress and success.

A Teenage Inventor

    The world could be one step closer to quick and inexpensive Ebola detection thanks to a teenager from Connecticut.

    Olivia Hallisey, a junior at Greenwich High School, was awarded $50,000 in the Google Science Fair for her new method that detects Ebola, a virus that causes bleeding from different parts of the body and usually causes death. Olivia's method is to ask patients to put their saliva (唾液) onto a testing card. The card changes color if the person is catching Ebloa. Present Ebloa tests take up to 12 hours and cost $1,000. Olivia's method, however, can be done just in 30 minutes for about $25. Besides, the sample (样本) doesn't have to be put in a refrigerator thanks to the silk material Olivia uses to produce the testing cards.

    Olivia was inspired to deal with this global problem after watching the news that more than 10,000 people died from Ebola in West Africa. She was particularly worried about the fact that, while the acts of involvement can improve survival rates, present detection methods are costly, time-consuming and require complex tools. Olivia got help from her science research teacher. She drew out directions from past research, and figured out detection systems that have proven to work with other diseases, including Lyme disease and yellow fever.

    "What affects one country affects everyone," Olivia told CNBC. "We have to work together to find answers to the huge challenges which cause harm to the global health." The Connecticut's teen, who hopes to become a doctor one day, was named the Google Science Fair winner in the competition of 20 competitors from across the globe. The fair is open to young people between the ages of 13 and 18 in most countries.

    Olivia hopes her success will inspire other girls interested in science and computers. "I would just encourage girls to try it in the beginning, and remind them that they don't have to feel naturally drawn or feel like they have a special talent for maths or science," she told CNBC, "but just really look at something they are interested in and then think how to improve something or make it more enjoyable or relate it to their interests."

DEAR Daughter,

    We have not seen you for a while now, so I thought we might check in. Did you fall off the edge of the Earth? Your mother worries, you know, and I am just curious. Well, I am more than curious. I feel abandoned.

    Apparently you've dumped us for your career. I can understand that, because you've always had a wonderful work ethic (道德).

    Look, obviously your long absence has confused us. As we go about our daily routines, your mother and I are distracted – both by your absence and our pride in your career. The other day, I entered my work password into the microwave, then stood there cursing it for not working. And I was so off my game (状态差) that I actually used that cholesterol-free mayo (不含胆固醇的蛋黄酱) your mother insisted on buying in an effort to drive me from the house.

    Listen, a lot has happened since you've been away. Abraham Lincoln was shot. We had two more children – a princess, now 23; a boy, now 12.

    Yesterday I bought a very clean 2001 Camaro car from an older woman. Your mother is not happy about this. She says it is the kind of muscle car driven by ex-convicts (有犯罪前科的人) when they examine your house at 2 am.

    In response, I tell her it was the car of my dreams (when I was 18). So that's where your long absence has left us. Your long absence is not so bad, though we miss your roaring laughter ... the way your cheeks flush (晕红) when you eat Thai food. How you always march too hard into the house, like a Scotsman stepping on snakes.

    Each evening, your mother now waits by the window the way she did when you used to step off the bus in first grade, your hair full of rubber bands.

    Bet that drove you crazy even then, her running out on the porch (门廊) like you'd just returned from a month-long journey to the moon.

    Look, parents are not easy people.

    But should the urge ever hit you, feel free to stop by some time. Our house is your house. Our hearts are yours too.

    And your mother is still waiting by the window.

Love,

Dad

    In our increasingly fast-paced, technology-driven world, most adults do not get the 8-10 hours of sleep every night. Things are even worse for those with young children. A recent study showed that 86% of parents in the UK complain of tiredness and about 26% get less than 5 hours of sleep every night. To give tired parents a little relaxation from their tight schedules (时间表), David Lloyd Clubs, a chain of gyms and fitness centers in Europe, has introduced a napping (小憩)class!

    As the name suggests, the hour-long group class, described as a way to " refresh the mind, improve moods, and even bum the odd calorie (卡路里)", does not involve any hard exercise. Instead, the members are guided through 15 minutes of light stretching (伸展)to help them relax. Then, they are encouraged to lie under the blankets of a comfortable bed, cover their eyes with an eye mask, and take a nap for 45 minutes. With music playing in the background and the room set to the perfect temperature, they can be assured of the best possible sleep. The class is now being offered at just one place. If popular, they will be expanded (延伸)to other David Lloyd Clubs.

    Do you know the good points of nap? A study conducted by Pennsylvania's Allegheny College found that midday naps not only help participants feel well-rested, but also enable them to deal with stress better. A follow-up study carried out at the University of California at Berkeley concluded that a 45-minute nap in the middle of the day helps to improve the learning abilities. The good news is that you do not have to make a trip to the U. K. to join this latest exercise fashion. You can get involved with the comfort of your own bed. So, go ahead and encourage your entire family to try a napping class.