Rodney Smith, Jr. started mowing the lawns (割草坪) in Huntsville, Alabama last fall. He used his time between classes at Alabama A&M to reach a goal of mowing 100 yards before winter. Smith has been cutting grass for free to help single moms, the elderly, and the disabled, while teaching the local youth the values that can turn boys into men. “I'm doing something positive. I want boys to follow me and be better than me,” he wrote on his Facebook page.

    Rodney is from Bermuda. He says people there help each other and are always friendly. “That's what drives me to help people.”

    In May this year, he was getting ready to launch his mowing service for the summer when he heard about a 93-year-old woman trying to cut grass by herself. Smith and a friend showed up to do the job for her.

    In November, a local TV station gave him $300, calling it a special gift for his good work. After he received the money, he used it to create the non-profit(非盈利的) service group, Raising Men Lawn Care Service. He also started a page to collect money to buy lawn equipment and other things—including T-shirts with special logos.

    After I read about Rodney's story, I told my friends about him. We also planned to mow lawns for single moms, the elderly and disabled in our neighborhood. And I hope more and more young people will join Rodney's service group—Raising Men Lawn Care Service.

    Robert is a boss who hires me as a helper.He has lost his house and now has to live back at home,with his mother,at 46.

    We had a job in Fort Bending.Robert bought me breakfast there.As we were leaving,a man walked to us asking if he could get some work from Roberts' company.Robert explained there was no work for the man and the man started to walk away.As I looked at the man leaving from Robert,I saw Robert taking out some money and went after the man to gave it to him.I asked Robert,"Why did you do that?"Robert said "He really had bad luck—what does a few dollars matter?"

    After a very long,hard day,we stopped at a Quick Trip for a soda.I got through the checkout ahead of Robert and went back out to the work truck.Beside the truck was a woman in a car.She had 3 kids and asked me if I could help—she had been evicted and had nowhere to go with her children.They were living in the car.I told her I was also hurting in these times,so I could not.Robert came out,opened the work truck and we got in.I told him about the lady.I didn't even finish the story when Robert was out his door around the truck and gave the women money to help them out.When Robert returned I asked,"Why did you do that,she didn't even ask you".He said,“I have an ex-wife（前妻）and a kid.If they need help and I am not able,someone will help them”.

    An analysis of almost 50 years of competitions—including Eurovision Song Contests and world skating championships—has found that contestants are more likely to win if they are among the last to appear before the judges.

    The study by an American university appears to provide scientific proof that the best man, or woman, does not always win. It found that, on average, the last competitor to appear in the Eurovision Song Contest was more than twice as likely to win as the one who went on first.

    The first rounds of figure—skating championships, for which the running order is selected at random, showed more dramatic results. The final skater had a 14 percent chance of victory, making him or her more than four times as likely to win as the first skater.

    The study showed a gradual worsening of chances for competitors who appeared earlier in the running order. A contestant who appears first in a contest is two percent less likely to win than one who appears second. A contestant who appears second is two percent less likely to win than one who appears third, and so on.

    The findings are published in the March issue of Acta Psychologica, a scientific journal. Robert Hardman, a senior lecturer in psychology at London Metropolitan University who specializes in the science of decision-making, said that the results were interesting. He suggested that the effect was caused by the limitations of the human memory.

    "When people make comparison, they aren't really able to make a lot of fine-grade discrimination. When contestants appear at the beginning of a contest, judges have little to compare them to and are perhaps cautious about the scores they give." he said.

    "Later on, when judges are able to compare the contestants to those that have gone before, they might give more extreme marks because they feel more confident about their judgments."

    Have you ever spent an afternoon in the backyard, maybe grilling or enjoying a basketball game, when suddenly you notice that everything goes quiet? There is an old phrase "calm before the storm"， often used in a situation—a quiet period just before a great activity or excitement. According to our own experience, we know there is actually calm before the storm. But what causes this calm? And is it always calm before the storm? Let's hear what scientists have to say.

    A period of calm happens in a particular kind of storm, the simplest kind of storm—a single－cell thunderstorm. In this type of thunderstorm, there is usually only one main updraft, which is warm, damp air and drawn from places near the ground. Storms need warm and damp air as fuel, so they typically draw that air in from surrounding environment. Storms can draw in the air that fit their need from all directions—even from the direction in which the storm is traveling.

    As the warm, damp air is pulled into a storm system, it leaves a low－pressure vacuum(真空) coming after. The rising air meets the cold dry air that has already existed in the storm clouds, thus the temperature of the warm, damp air drops, and the water vapour (水蒸汽) in it changes into tiny drops that are a precondition of rain. These drops accumulate and build on larger particles like dust, until they grow large enough to form raindrops.

    This warm, damp air keeps moving upwards, but it becomes cooler and drier during its trip through cloud. When it reaches the top of the cloud, the air gets spit out(被挤出) at the top. This air is sent rolling out over the big thunderclouds. From there, the air goes down. Warm and dry air is relatively stable, and once it covers a region, that air, in turn, causes the calm before a storm.

    Most thunderstorms, though, don't start with calm. That's because most are actually groups of storms with complex wind patterns. There's so much air moving up and down storm groups that the calm before the storm never happens. Instead, before the storm, it might be really windy!

    TESCO has announced it is banning the sale of energy drinks to teenagers, and that the big move will begin in weeks. The supermarket has joined a host of major names banning teenagers from buying high caffeine, high-sugar drinks. The government indicates that the principal question to be determined is whether the purchasing restrictions will apply at the age of 16 or 18.

    Theresa May said the consultation was linked to the government's childhood obesity (肥胖) strategy and said it was necessary to examine the consumption of energy drinks "often because they are sold at cheaper prices than soft drinks".

    The principal reason for the ban is the high level of caffeine in the energy drinks, which has been linked to a string of health problems for children, including head and stomach aches as well as sleep problems.

    Energy drinks often also have higher levels of sugar than soft drinks. According to government figures, sugared energy drinks have 60% more calories and 65% more sugar than normal soft drinks and sugar is one of the largest causes of obesity.

    Jamie Oliver said he welcomed the ban on energy drink sales because "too many children are regularly using them to replace breakfast" and "teachers from across the country have told me how their lessons are disrupted because of these drinks".

    A Downing Street source added that there is no evidence that energy drinks have any nutritional value in children's diet. That accounts for the government's action on measures to tackle childhood obesity and improve children's health.

    The move is the latest step in an approach in relation to childhood obesity and health. According to European Food Safety Authority research, two-thirds of 10 to 16-year-olds regularly consume energy drinks, along with 18% of 3 to 10-year-olds.

    Twenty years ago, I drove a taxi for a living. One night I went to pick up a passenger at 2:30 a.m. When I arrived to collect, I found the building was dark except for a single light in a ground floor window.

    I walked to the door and knocked, "Just a minute," answered a weak, elderly voice. After a long pause, the door opened. A small woman in her eighties stood before me. By her side was a small suitcase.

    I took the suitcase to the car, and then returned to help the woman. She took my arm and we walked slowly toward the car.

    She kept thanking me for my kindness. "It's nothing," I told her. "I just try to treat my passengers the way I would want my mother treated."

    "Oh, you're such a good man." She said. When we got into the taxi, she gave me an address, and then asked, "Could you drive through downtown?"

    "It's not the shortest way," I answered quickly.

    "Oh, I'm in no hurry," she said. "I'm on my way to a hospice(临终医院). I don't have any family left. The doctor says I don't have very long."

    I quietly reached over and shut off the meter(计价器).

    For the next two hours, we drove through the city. She showed me the building where she had once worked, the neighborhood where she had lived, and the furniture shop that had once been a ballroom where she had gone dancing as a girl.

    Sometimes she'd ask me to slow down in front of a particular building and would sit staring into the darkness, saying nothing.

    At dawn, she suddenly said," I'm tired. Let's go now."

    We drove in silence to the address she had given me.

    "How much do I owe you?" she asked.

    "Nothing." I said.

    "You have to make a living," she answered. "Oh, there are other passengers," I answered.

    Almost without thinking, I bent and gave her a hug. She held onto e tightly. Our hug ended with her remark, "You gave an old woman a little moment of joy."