Jolly Joe always arrived at my neighborhood at exactly half past noon. The clang (叮当声) of the bell on his red and black truck was then the sweetest sound in the world. Brightly colored stickers advertising his amazing kinds of treats could be found on all sides of his truck. The whole neighborhood would magically come to life.

    Holding a nickel (五分镍币), I'd run to the back of the vehicle, where children were already gathering. Jolly Joe would jump out of his truck, the sun shining on his hair. He was an older man, short and round, with a pleasant face and a welcoming smile.

    I don't know how, but he knew us all by name, as well as which treats we preferred. My favorite was the Buried Treasure. By eating all the ice cream, you'd discover the treasure inside: a lion, a dog or even a funny clown — printed onto a plastic stick.

    When it was finally my turn, he'd put his arm deep inside one of the boxes, and pause (停顿) for a moment, a puzzled look crossing his face. Then, suddenly, he'd pull it out: the Buried Treasure! I couldn't wait to enjoy the cool, sweet ice cream.

    As quickly as he arrived, it was time for Jolly Joe to go, leaving behind laughing, excited children with sticky hands and faces. Soon the sound of his clanging bell would slowly disappear in the distance.

    I always hated to see Jolly Joe go, because I knew the rest of the day would be as hot and boring as before. But I took some comfort in knowing that the next day he'd come round the corner at half past noon and once again spread his magic.

     The World Meat Free Day for 2017 falls on 12, June, but what would actually happen if the whole world suddenly went vegetarian(素食的) permanently?

     If vegetarianism were accepted by everyone by 2050, the world would have about seven million fewer deaths every year. No meat would lower the chances of some diseases or even some cancers and so save the world 2-3% global GDP in medical bills. Food-related emissions would drop by around 60%. This would be due to getting rid of red meat which come from methane (甲烷) producing livestock (家畜) — from people's diets. Turning former pastures (牧场) into native habitats and forests would slow climate change and bring back lost biodiversity, including some animals which were previously pushed out or killed in order to keep cattle.

    However, farmers in the developing world could really suffer. Arid and semi-arid lands can only be used to raise animals as there's no or little water in these places, such as the Sahel land strip in Africa next to the Sahara; nomadic (游牧的) groups that keep livestock there would be forced to settle permanently and lose their cultural identities if there were no more meat. Losing meat also means that we also lose traditions. There's no more Christmas turkey. We would need to replace meat with nutritional substitutes, in particular for the world's estimated two billion-plus unhealthy or weak people for lack of nutrients. Animal products contain more nutrients per calorie than staples like grains and rice.

    Everybody currently engaged in the livestock industry would need to be retrained for a new career. This could be in agriculture, reforestation or producing bioenergy. Failing to provide career alternatives could lead to mass unemployment and social problems, particularly in traditionally rural communities.

    As I begin to tell my friends about the seven days you treated my wife, Laura, in what turned out to be the last days of her young life, they stop me at about the 15th name that I recall. The list includes the doctors, nurses, social workers, and even cleaning staff members who cared for her.

     “How do you remember any of their names?” they ask.

     “How could I not?” I respond.

    Every single one of you treated Laura with such professionalism and kindness and dignity as she lay unconscious. When she needed shots, you apologized that it was going to hurt a little, whether or not she could hear. When you listened to her heart and lungs through your stethoscopes(听诊器)and her gown (长衫)began to slip, you pulled it up to respectfully cover her. You spread a blanket when the room was just a little cold and you thought she'd sleep more comfortably that way.

    You cared so greatly for her parents, helping them climb into the room's awkward recliner(躺椅), fetching them fresh water almost by the hour, and answering every one of their medical questions with patience.

    Then there was how you treated me. How many times did you walk into the room to find me sobbing, my head down and resting on her hand, and quietly go about your task, as if willing yourselves invisible? How many times did you help me set up the recliner as close as possible to her bedside? How many times did you check on me to see whether I needed anything, from food to drink, from fresh clothes to a hot shower.

    Really, I have all of you to thank for it with my eternal gratitude and love.

    A handsome man can earn a fifth more than a plainer colleague (同事) but a beautiful woman is not paid a penny more than her average-looking colleague, new research has shown.

    The study by senior economists (经济学家) found that being good-looking meant male workers could earn 22 percent more than average-looking colleagues. Researchers said good looks did not give women a similar advantage.

    Andrew Leigh, the former economics professor at the Australian National University who co-authored the report, said: "Beauty can be a double-edged sword for women."

    "Some people still believe good looks and intelligence (智慧) are incompatible (矛盾的) in women so a good-looking woman can't be that productive, but it doesn't affect men's pay."

He said that although he believed good-looking women may also earn more, the research did not support his theory.

    The research found that handsome men in all jobs, from manual labour to highly-paid professional careers, can earn 22 percent more than their colleagues doing the same work.

    Men with below-average looks face a battle in the office, with ugliness reducing a man's earnings by 26 percent compared to an average-looking worker.

    Former male model Ian Mitchell, 28, who has a first class degree in history from Edinburgh University and now works for a cosmetics (化妆品) company, told the Sunday Times: "It gives you confidence, and I suspect people tend to warm to you more quickly."

    The study, named Unpacking the Beauty Premium, was the largest exercise of its kind and repeated a survey from 1984 to see if the beauty premium had changed.

    Leigh said the research showed people in the workplace were "lookist (以貌取人的) " and he hoped the findings would encourage employers to remove their prejudice(偏见).

    There are two type of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the different ways in which they consider things, persons, events and the resulting effects upon their minds.

    People who are to be happy fix their attention on the convenience of things: the pleasant parts of conversation, the well prepared dishes, the goodness of the wine and the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied .By their remarks, they sour the pleasure of society, offend many people, and make themselves dissgreeable everywhere .If this turn of mind was founded in nature ,such unhappy persons would be the more to be pitied . The intention of criticizing and being disliked is perhaps taken up by imitation .It grows into a habit, unknown to its possessors. The habit may be strong, but it may be cured when those who have it realise its bad effects on their interests and tastes. I hope this little warning may be of service to them and help them change this habit.

    Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck .Those people offend many others; nobody loves them , and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success .Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrong doings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others, If they do not, it will be good for others to avoid any contact with them .Otherwise , it can be disagreeable and sometimes very inconvenient , especially when one becomes mixed up in their quarrels.

    Throughout much of human history, man has been the measure of many, if not all, things. Lengths were divided up into feet and smaller units from the human hand. Other measures were equally characteristic. Mediterranean traders for centuries used the weight of grains of wheat to define (定义) their units of mass. The Romans used libra, forerunner of the pound, by referring to the weight of a carob (角豆树) seed.

    The sizes of similarly named units could also differ. The king's foot, used in France for nearly 1, 000 years after its introduction by Charlemagne in around 790 AD, was, at 32.5cm, around a centimeter shorter than the Belgic foot, used in England until 1300.Greek, Egyptian and Babylonian versions of water in a fixed container varied from one another by a few kilos, Nor was there agreement on such things within countries. In France, where there was no unified (统一的) measurement system at the national level, the situation was particularly terrible. The lieue (former measure of distance), for example, varied from just over 3 km in the north to nearly 6 km in the south.

    Although John Wilkins, an Englishman, first put forward a decimal system (十进制) of measurement in 1668, it was the French who in 1799 made it law. The Système International d'Unités (SI, or the metric system, as it is better known) developed from it and became the official measurement in all countries except Myanmar, Liberia and the United States. Now the International Bureau of Weights and Measures in Paris is set to give the metric system its biggest shake-up yet.

    At a meeting in Versailles, France, on November 16th, 2018, the world's measurement bodies are almost certain to approve a decision that will mean four out of the seven base SI units, including the kilogram, will follow the other three, including the metre, in being redefined in terms of the values of physical constants (物理常数).Each of the chosen constants has been measured incredibly precisely, which would mean that from May 20^th 2019 the constants will themselves be fixed at their current values for ever. Any laboratory in the world will then be able to measure, for example, the mass of an object as precisely as the accuracy of their equipment will allow.