When Russell Lyons volunteered for the first time, he read “Goodnight Moon” to a class of San Diego preschoolers. And it wasn't reading — he'd memorized the book and was reciting it out loud. He was 4. Still, he said it felt good there, in front of the other kids, lending a hand. He wanted more of that feeling.

    Thirteen years later, he's getting a lot of it. He's on a five-month road trip across America — not sightseeing, but volunteering.

    The University City resident has spent time at an animal reserve in Utah, a women's shelter in St. Louis, a soup kitchen in New York, a retirement home in Tucson. This week he's in Los Angeles, at a program that supports disabled youth.

    “I just like helping people and feeling that something I do is making a difference,” he said. He resists the idea that his “Do Good Adventure” is all that unusual. It bothers him that the media often describe young people as lazy, self-centered. So he sees his trip as a chance to make a statement, too. “About 55 percent of teens do volunteer work, higher than the rate for adults” he said, according to a 2002 study. “Not everybody knows that. ”

    Of course, some teens do volunteer work because it looks impressive on their college applications. Lyons said he mentioned his trip on his applications. But charity work is a habit with him. Even before the cross country trip, he was volunteering about 200 hours a year at various places. He's made sandwiches for homeless families in Washington D.C. He's taught math to fifth-graders in Cuernavaca, Mexico.

    He gets some of that drive from his mother, Lesley Lyons, who has been involved in nonprofits for much of her life. She was there when her son “read” to the preschoolers — a memory of hers “that will never go away.”

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    Around the world there are some festivals that for some of us may sound bizarre.

    In England they celebrate the rolling cheese race, which occurs every year during the last Monday in May. This festival's characteristic is a contest where an official rolls cheese down a steep hill and festival- goers go chasing after it. The winner is the first one to reach and catch the cheese.

    Another festival celebrated in England is the world championship of grimaces (鬼脸). It is a celebration that dates back to 1297 and is celebrated during the month of September. The task is to perform the best grimace using anything you can to win.

    The worldwide championship of wife lifting is celebrated in Finland. The game is based on Viking traditions where a man should carry away his neighbor's wife. According to the rules, any woman above 17 is considered as a wife, so if you are within this age, take care while visiting this country during the month of July.

    Many of you have watched Pirates of the Caribbean and have known something about pirates. The 19^th of September has been declared worldwide as the day to talk like a pirate. Plenty of people have celebrated it thanks to the publicity (宣传) on the Internet.

    First staged in 1998, the Boryeong Mud Festival is an attraction that pulls more than a million visitors to the South Korean City. As you all know, the town is said to be rich in minerals, so there is no shortage of mud. Mud is trucked onto Daecheon Beach for tourists and locals to enjoy the festival to their best.

    The Monkey Buffet Festival is held in Thailand to develop tourism. It's an unusual feast held for about 600 monkeys. The Monkey Buffet Festival is held in honor of the Hindu gods Ram and Hanuman and involves 3,000 kilograms of vegetables and fruits being laid out for monkeys to stuff themselves.

    Next time you hear a funny joke you'd better not laugh too hard. According to a paper published by the British Medical Journal, laughter isn't always the best medicine. Sometimes it can even be harmful. Professor Robin Ferner from the University of Birmingham, one of the authors of the study, found that bad things could happen to people who laughed too much. He says, "We found people with heartbeat problems which had stopped their hearts, we found people who had fainted(昏倒), and we found people who'd dislocated their jaws or burst their lungs."

    It seems that laughing can be no laughing matter. But it's not all doom and gloom. Professor Ferner says there are benefits to laughing when you want to lose weight, for example. Yes, that's right: laugh and be slimmer! Professor Ferner explains that: "You use energy when you laugh, you move your diaphragm(横隔膜), you expand your lungs, and both those things can be helpful."

    According to the research, laughing for a quarter of an hour can burn 40 calories, and if you laughed all day you'd use about 2, 000 calories, which is what most people consume in a day. But don't do that or you might end up with a painful jaw. Ouch! Or you might find people looking at you in a funny way.

    But I don't want to finish this article leaving you feeling desperate. Laughter comes naturally for most of us. Babies begin to laugh at around 3-6 months. So give in to your sense of humour and keep smiling. Life is short anyway.

Mark Twain's First Money

      Mark Twain was asked one day if he could remember the first money he ever earned. He thought a long time and then said, "Yes, it was at school. I can remember everything about it. School boys in those days did not take good care of their chairs and desks. There was a rule in our school that if anyone damaged his desk or chair, he would have to pay five dollars or the teacher would beat him in front of the whole school."

    "One day I damaged my desk in some way, I had to pay five dollars or be beaten before the whole school. My father said it would be too bad to have our family disgraced in front of the whole school. He agreed to give me five dollars to hand over the teacher. But before he gave me the money, he took me upstairs and gave me a beating."

    "But as I had one beating and I decided I would take another beating at school and keep the five dollars. So that's what I did. That was the first money I ever earned."

    Dolphins, African gray parrots and some other animals understand the idea of “zero,” but researchers were surprised to find that honeybees also comprehend this abstract concept, considering the insects' tiny brains, according to a new study. Honeybees have fewer than one million neurons (神经元), compared with the 86 billion neurons in humans—and yet, they grasp a concept that humans, by some measures, don't start to understand before preschool.

    The researchers set up two cards, each of which had a set of symbols on them, like triangles or circles. Then, they trained a group of the bees to fly to the card with the lower number of symbols. The bees quickly learned what the humans wanted them to do to get their delicious, sweet rewards. The trained bees were then shown a card that was empty and one that had symbols on it. There is no need for the bees to be trained to fly more often to the empty card—thus showing that they understood that “zero” was a number less than the others.

    Although they flew more often to an empty card than to one that had one symbol on it, it became easier for them to distinguish when the symbols on the card increased in number. For example, they more often flew to the zero when the other card had four symbols than when it had one.

    Perhaps these findings will explain the brain mechanism (机制) behind what allows us to understand the concept of “nothing,” Adrian Dyer, a researcher said. This understanding, in turn, could help in the development of artificial intelligence (AI) that also understands this concept. “If bees can understand 'zero' with a brain of less than a million neurons, it suggests there are simple, efficient ways to teach AI new tricks,” Dyer said in the statement.

    LaVonn was helping out in her dad's store when a little boy, about five or six years old, came in. He was wearing a brown and oversized coat with dirty, old clothes beneath it. His shoes were broken, and only one had lace (鞋带). The boy looked around the store, picked up several items, examined them one by one and then carefully put them back on the shelf.

    LaVonn's dad walked over to the child and asked if he could help. The little boy said, "I'm looking for a gift for my brother." After 20 minutes, the child picked up a toy airplane. He held it carefully in his hands as if it were made of glass and carried it to LaVonn's father.

    "How much is this?" he asked. "My brother loves airplanes." LaVonn's dad answered, "How much money do you have?" The little boy reached into his coat and pulled out some small change (零钱). He spread his money out on the table and began to count. "I have twenty-seven cents," he answered. Her dad picked up the coins and said, "The airplane costs exactly twenty-seven cents! Wait here and I'll pack it up for you."

    The little boy walked out of the store with the gift and a smile of total satisfaction on his face. LaVonn made her way back to the shelf and she found the plane was priced at $11.98.She never mentioned it to her father. Her father didn't say anything more about it either, but she realized later, "My best gift that Christmas was seeing my dad's love in action."