A few years ago, I took a sightseeing trip to Washington, D.C standing outside the Ronald Reagan Center, I heard a voice, “Can you help me?” When I turned around, I saw an elderly blind woman with her hand extended. I reached into my pocket, pulled out all of my loose change and placed it on her hand without even looking at her. I was annoyed at being bothered by a beggar. But the blind woman smiled and said, “I don't want your money. I just want you to help me find the post office.”

    In a moment, I realized what I had done. I judged another person simply for what I guessed she had to be. I hated what I saw in myself. This incident reawakened my belief in humility（谦恭）,even though I'd lost it for a moment.

The thing I had forgotten about myself is that I am an immigrant. I left Honduras and arrived in the US at the age of 15. I started my new life with two suitcases, my brother and sister, and a strong, serious-minded mother. Through the years, I have been a dishwasher, mechanic and pizza delivery driver among many other humble jobs, and finally I became a network engineer.

    In my own life, I have experienced many open acts of prejudice（偏见）. I remember a time, at the age of 17, I worked as a waiter, and I heard a father tell his little boy that if he did not do well in school, he would end up like me. I have also witnessed the same treatment of my family and friends, so I know what it's like, and I should have known better.

    But now, living in my American middle-class lifestyle, it is too easy to forget my past, to forget who I am and where I have been, and to lose sight of where I want to be going. That blind woman on the street of Washington, D.C. cured me of my blindness. She reminded me of my belief in humility to always keep my eyes and heart open. By the way, I helped that lady to the post office. And in writing this article, I hope to thank her for the priceless lesson.

    Standing desks have become common across Silicon Valley, offering health benefits to those willing to work on their feet. However, due to their high price, they have failed to catch on until now. Recently, Ikea has brought out Bekant convertible（可变换的） standing desk that can become a normal desk at the touch of a button. The $500 adjustable desk can transform from a standard desk to a standing one, and Ikea hopes it could make the standing desk mainstream.

    Experts say that changing from a seated to a standing desk can improve productivity. Similar desks have become a common sight at tech firms such as Google, where some employees have even installed treadmill (跑步机) and bicycle desks.

    The desk is not the first “convertible” on the market. As early as 2013, Stir Kinect brought out an adjustable desk. The $3,890 Stir Kinect desk has a motor to raise and lower itself, changing it into a standing desk or a traditional desk. The desk can even be programmed to move up and down slightly, making it appear to take a gentle breath to remind the user to change their positions. To move between sitting and standing positions, owners simply double tap on the screen. The desk can learn the user's preferences over time and suggest the best seating position.

The Stir Kinect desk was created by a team of ex-Apple and Disney engineers. It has a built-in touch screen to control and track movement, and can tell users exactly how many calories they burn by standing during their working day. It also has devices containing power points and USB ports for charging phones, to keep cables hidden.

    “Ikea's height-adjustable desk is great for opening up the lower end of the market, " said JP Labrosse, founder and CEO of Stir.

    A recent university study found that current electric cars could be used for 87% of daily car journeys in the US. That figure could rise to 98% by 2020.

One hurdle to the widespread adoption of electric cars has been “range anxiety” —drivers' concerns about running out of petrol on a journey. While petrol stations are conveniently located across national road systems, the necessary network of electric charging stations is still being developed. In fact, charging points are becoming increasingly common throughout the USA.

    Attitudes towards electric vehicles have changed quite considerably over the last few years. Not that long ago, electric cars met with doubt, and their high price drove customers away. Thanks to improvements in battery capacity(电池容量), recharging times, performance and price, the current generation of electric cars is starting to persuade critics.

    As well as progress on the road, electric vehicles are taking to the sea and sky. Electric boats are among the oldest electric vehicles, having enjoyed several decades of popularity from the late 19th to the early 20th century before petrol-powered outboard motors took over. Now, the global drive for renewable energy sources is bringing electric boats back. Steps towards electric planes are also being made, with Airbus and NASA among the organizations developing and testing battery-powered planes. The experiments could soon make electric flight a reality.

    Electric vehicles do not produce any emissions(排放物). Were the US to act on the study's findings and replace 87 percent of its cars with electric vehicles, it would reduce the national demand for petrol by 61 per cent. However, because of the production processes and the generation of electricity required to charge these vehicles, they cannot claim to be completely emission-free. Even so, as many countries continue to increase their use of renewable energy sources, electric vehicles will become even cleaner.

    As time went on, Philip's deformity was accepted like one boy's red hair and another's unreasonable obesity. But meanwhile he had grown horribly sensitive. He never ran if he could help it, because he knew it made his limp more noticeable. He stood still as much as he could, with his badly shaped foot behind the other. Because he could not join in the games which other boys played, their life remained strange to him; sometimes they seemed to think that it was his fault if he could not play football, and he was unable to make them understand. He was left a good deal to himself. He had been inclined to talkativeness, but gradually he became silent.

    The biggest boy in his dormitory, Singer, took a dislike to him, and Philip, small for his age, had to put up with a good deal of hard treatment. About half-way through the term there was a game called Nibs. It was a game for two, played on a table or a form with steel pens. Soon nothing was seen but boys playing this game, and the more skilful acquired vast stores of nibs. But in a little while Mr. Watson made up his mind that it was a form of gambling, and forbade the game. Then he ordered all the nibs in the boys' possession be handed in. Philip had been very skilful, and it was with a heavy heart that he gave up his winning; but his fingers itched to play still, and a few days later, on his way to the football field, he went into a shop and bought a pennyworth of J pens. He carried them loose in his pocket and enjoyed feeling them. Presently Singer found out that he had them. Singer had given up his nibs too, but he had kept back a very large one, called a Jumbo, which was almost unconquerable, and he could not resist the opportunity of getting Philip's Js out of him. Though Philip knew that he was at a disadvantage with his small nibs, he had an adventurous disposition and was willing to take the risk; besides, he was aware that Singer would not allow him to refuse. He had not played for a week and sat down to the game now with a thrill of excitement. He lost two of his small nibs quickly, and Singer was jubilant, but the third time by some chance the Jumbo slipped round and Philip was able to push his J across it. He crowed with triumph. At that moment Mr. Watson came in.

    "What are you doing?" he asked.

    He looked from Singer to Philip, but neither answered.

    "Don't you know that I've forbidden you to play that game?"

    Philip's heart beat fast. He knew what was coming and was dreadfully frightened, but in his fright there was a certain exultation. He had never been swished. Of course it would hurt, but it was something to boast about afterwards.

    "Come into my study."

    The headmaster turned, and they followed him side by side. Singer whispered to Philip:

    "We're in for it."

    Mr. Watson pointed to Singer.

    "Bend over," he said.

    Philip, very white, saw the boy quiver at each stroke, and after the third he heard him cry out. Three more followed.

    "That'll do. Get up."

    Singer stood up. The tears were streaming down his face. Philip stepped forward. Mr. Watson looked at him for a moment.

    "I'm not going to beat you. You're a new boy. And I can't hit a cripple. Go away, both of you, and don't be naughty again."

    When they got back into the school-room a group of boys, were waiting for them. They set upon Singer at once with eager questions. But he did not answer. He was angry because he had been hurt.

    "Don't ask me to play Nibs with you again,' he said to Philip. 'It's jolly nice for you. You don't risk anything."

    "I didn't ask you."

    "Didn't you!"

    He quickly put out his foot and tripped Philip up. Philip was always rather unsteady on his feet, and he fell heavily to the ground.

    "Cripple," said Singer.

    For the rest of the term he tormented Philip cruelly, and, though Philip tried to keep out of his way, the school was so small that it was impossible; he tried being friendly and jolly with him; he abased himself, so far as to buy him a knife; but though Singer took the knife he was not placated. Once or twice, driven beyond endurance, he hit and kicked the bigger boy, but Singer was so much stronger that Philip was helpless, and he was always forced after more or less torture to beg his pardon. It was that which rankled with Philip: he could not bear the humiliation of apologies, which were wrung from him by pain greater than he could bear. And what made it worse was that there seemed no end to his wretchedness; Singer was only eleven and would not go to the upper school till he was thirteen. Philip realized that he must live two years with a tormentor from whom there was no escape. He was only happy while he was studying and when he got into bed. And often there recurred to him then that queer feeling that his life with all its misery was nothing but a dream, and that he would awake in the morning in his own little bed in London.

    Even the hardest days contain lessons that will help you be a better person. Feeling down？Consider these things to remember when you're having a bad day.

    No one promised life would be perfect. If you look for perfection, you'll never be content. Don't condition your happiness on meeting every expectation you set for yourself. It is good to be ambitious，but you'll never be perfect. If you expect otherwise, your life will be filled with disappointments.

    Success doesn't happen overnight. Trees that are slow to grow bear the best fruit. Don't kid yourself into thinking success will come quickly. It isn't easy to be patient，but anything worth doing requires time. If you get frustrated, remind yourself why your goal is important.

    There is a lesson in every struggle. And once the storm is over，you won't remember how you made it through or how you managed to survive. But one thing is certain. When you come out of the storm, you won't be the same person who walked in. That's what this storm's all about. Don't complain about how terrible your life is. If you search for the lesson in your present struggle, you'll be able to make positive changes that would prevent similar situations in the future.

    Without hard times, you wouldn't appreciate the good ones. Strength does not come from winning. Your struggles develop your strengths. When you go through hardships and decide not to give in, that is strength. It is hard to find much to smile about when you fail, but how else would you improve yourself？If you look at failure as a part of your evolutionary process, you'll stay positive and pursue your goals for as long as it takes.

    Does your older brother think he's cleverer than you? Well, he's probably right. According to a new research published in the journal Intelligence, the oldest children in families are likely to have the highest IQs and the youngest the lowest.

    A number of studies have suggested that IQ scores decline with birth order. In the most recent study, at Vrije University, Amsterdam, researchers looked at men and women whose IQ had been tested at the ages of 5, 12, and 18.

    The results, which show a trend for the oldest to score better than the youngest in each test, involved about 200,000 people. That showed that first-borns had a three-point IQ advantage over the second-born, who was a point ahead of the next in line.

    The order of birth can also affect personality, achievement, and career, with first-borns being more academically successful and more likely to win Nobel prizes. However, eldest children are less likely to be radical(不同凡响的) and pioneering. Charles Darwin, for example, was the fifth child of six.

    Exactly why there should be such differences is not clear, and there are a number of theories on environmental influences on the child.

    The so-called dilution(稀释法) theory suggests that as family resources, both emotional and physical, as well as economic, are limited, it follows that, as a result , as more children come along, the levels of parental attention and encouragement will drop. Another theory is that the intellectual environment in the family favors the first-born who has, at least for some time, the benefit of individual care and help.

    The theory which enjoys the most support is that the extra time and patience that the earlier-borned get from their parents, compared with those arriving later, gives them an advantage.