Papa was a ranger. He worked with horses. He always wore clean clothes with a hat even when he worked. His hat was always the same kind of a cowboy hat—large black hat of heavy wool. He wore his hat full and high. I think he wanted to look taller than he really was.

    Mama was proud of the way he looked when he wore his hat and his best clothes. But in some way she got the idea that papa would lose his hair if he kept wearing a heavy wool cowboy hat in the hot weather. She began to talk about his hat.

    "Papa, "she said one day, "why don't you get a nice cool straw hat? That heavy wool cowboy hat may cause losing hair!" Papa laughed at her and explained that the horses wouldn't recognize him if he changed the hat. But she didn't believe him.

    Mama talked and talked about the hat all summer long. At last papa answered, a little angry, "It would not the cowboy hat but a wife's talking about the hat that makes me lose my hair."

    Mama had a very serious look on her face. She went straight out and later came home with a straw hat. It was a bad year for ranger and we didn't have much money. She thought that if she spent the money for a straw hat, papa would wear it. When papa saw the hat, his face got red. Without a word, he pulled the straw hat down over his head until it hid his eyes and went on to train the horses.

    He was a good ranger and gentle to his horses. But as papa got close to the horses this time, they jumped high into the air, raising their front feet. All of them ran around in the rounded field and then raced toward the barn. Papa began to shout "Woo boys. Steady boys, steady." But there was nothing equal to.

    Papa walked back straight to the stove in the kitchen, pushed the straw hat deep down into the fire then turned to mama, in a way that even frightened me. "Now listen to me, mama. Understand this I will never wear a straw hat or any other kind of hat my horses do not like. "Then he put on his wool cowboy hat and walked out of the house.

    I never heard mama talk any more about hats. Perhaps, that is why when papa died many years later, there was a round spot on the top of his head where there was no hair.

    If a diver surfaces too quickly, he may suffer the bends. Nitrogen(氮) dissolved(溶解) in his blood is suddenly liberated by the reduction of pressure. The consequence, if the bubbles (气泡)accumulate in a joint, is sharp pain and a bent body—thus the name. If the bubbles form in his lungs or his brain, the consequence can be death.

    Other air-breathing animals also suffer this decompression(减压) sickness if they surface too fast: whales, for example. And so, long ago, did ichthyosaurs. That these ancient sea animals got the bends can be seen from their bones. If bubbles of nitrogen form inside the bone they can cut off its blood supply. This kills the cells in the bone, and consequently weakens it, sometimes to the point of collapse. Fossil (化石)bones that have caved in on themselves are thus a sign that the animal once had the bends.

    Bruce Rothschild of the University of Kansas knew all this when he began a study of ichthyosaur bones to find out how widespread the problem was in the past. What he particularly wanted to investigate was how ichthyosaurs adapted to the problem of decompression over the 150 million years. To this end, he and his colleagues traveled the world's natural-history museums, looking at hundreds of ichthyosaurs from the Triassic period and from the later Jurassic and Cretaceous periods.

    When he started, he assumed that signs of the bends would be rarer in younger fossils, reflecting their gradual evolution of measures to deal with decompression. Instead, he was astonished to discover the opposite. More than 15% of Jurassic and Cretaceous ichthyosaurs had suffered the bends before they died, but not a single Triassic specimen(标本) showed evidence of that sort of injury.

    If ichthyosaurs did evolve an anti-decompression means, they clearly did so quickly—and, most strangely, they lost it afterwards. But that is not what Dr Rothschild thinks happened. He suspects it was evolution in other animals that caused the change.

    Whales that suffer the bends often do so because they have surfaced to escape a predator (捕食动物) such as a large shark. One of the features of Jurassic oceans was an abundance of large sharks and crocodiles, both of which were fond of ichthyosaur lunches. Triassic oceans, by contrast, were mercifully shark- and crocodile-free. In the Triassic, then, ichthyosaurs were top of the food chain. In the Jurassic and Cretaceous, they were prey(猎物) as well as predator—and often had to make a speedy exit as a result.

    I owe my father a huge thank you! Sure, I need to thank him for all those years of paying my bills, fixing my bikes, and providing a shoulder to cry on. But this year I realized that his contributions to my childhood were much more than that.

    I grew up as Daddy's Little Girl. If I had a problem that needed fixing or a question that needed answering, he was the one I ran to. He helped me get through everything from math homework as a high school student to career choices as a young adult. He always expected that I do my best in whatever I did, and he believed I could succeed in anything I put my mind to. As a result, I learned to hold myself to those same standards. He always showed me unconditional love, which helped me learn to love myself. It was something I'd taken for granted until I realized from talking with my friends that they had no similar view of their self worth. Having fathers that didn't believe in them left them to grow up not believing in themselves.

    As I was growing up, my father also modeled how a woman should be lavished. He treated my mom with love and respect. As a result, I grew to expect nothing less than that from the men I dated and from the man I would eventually marry. Dad was a living picture of godliness (虔诚), honesty and responsibility. It was only recently that I realized what a deep effect fathers have on their daughters' lives. That is why I want to thank my dad for the godly example of love that he has been to me throughout my life.

Lizzie's diary from Antarctica (南极洲)

Day 3: Tuesday   December 2

    We planned to go to Rothera that morning. We'd be staying there for the next two weeks. Because Antarctica is the windiest place on earth, sometimes you can't fly at all.

    We had a nervous wait over breakfast to find out if we'd be leaving that day. People have to stay in Stanley for weeks while the pilots wait for good weather.

    It turned clear at 9:30 and we took off at 10:30 on a little red plane called a Dash-7. But even when we were in the air, there was still a chance we wouldn't be able to fly the whole day.

Day 4: Wednesday   December 3

    After waking up in the Antarctic for the first time today I can understand why everybody who comes here falls in love with the place. It is really beautiful.

    We're staying at Rothera Survey base with mountains of ice all around. It is about minus 2⁰C today, which for me is very cold, but the regulars(常客) here are often seen walking around in T-shirts !

Day 5: Thursday   December 4

    I woke up to another beautiful sunny day here in the Antarctic. I'm told it's a bit colder today, about minus 5⁰C, but it's not very windy so it feels warmer. Those of us who are new to the base have to do a special training course before we're allowed to go off base to other stations or to go snowboarding over the nearby hill.

Day 7:  Saturday   December 6

    Not a cloud in the sky and it's warm enough to sit outside (in a jacket).

    The most amazing thing about this place is how the scenery (风景) changes every day.

    At first I thought I was going mad. I'd step outside in the morning and think, "I'm sure that big mountain of ice wasn't there yesterday." It's because the sea ice is always moving—slowly thankfully !

Dear editor(编辑),

    Can't your newspaper do something about the custom (习惯) of hitchhiking?

    A short time ago, on a car travel I counted at least 50 people standing beside the road, asking for rides. Many of them were young women.

    Don't they understand how dangerous it is to get into the car driven by a stranger? How much do they know about the driver? Is he a good driver or not? They know nothing!

    Many of these young hitchhikers may come from good families. Don't their parents teach them anything about the world? I always taught my children not to talk to strangers. I never let them take rides from people they didn't know.

    Isn't there enough crime (犯罪) today without asking for trouble by hitchhiking? On the other hand, hitchhiking may bring some traffic trouble. Don't you think what I said is true?

    A Worried Grandfather

My grandfather was born in a small town in Italy. He would wake up at four in the morning every day to work on the farm. Although he was a great student in school, he only went up to Grade 3 because he was required to help with the family farm. 

Later, my grandfather used his own hard-earned savings—the small amount was all he had—to travel to Canada. He was alone in a new country, not knowing anyone and not speaking English or French. At a farm, the owner quickly saw what a hard-working young man my grandfather was, so he paid my grandfather a much higher salary. Although the owner was very nice to him and treated him like family, he was not satisfied. He dreamed of being more successful, of better career advancements. 

One day, he got an offer to work in the construction industry. My grandfather, a newly immigrated young famer, who was eager to move up in the world, caught this opportunity and prospered( 发达 ) through hard work. Around 1967, however, he become overwhelmed(不知所措的)with stress, sleepless nights and anxiety from the business. He also had two young daughters to take care of and my grandmother was in the hospital at the time. The combined stress and anxiety unfortunately drove him into a major depression. During a medical check-up, his doctor warned him about his health. He knew it was time for him to make a change and decided to sell his shares in the company. 

He then began a smaller business of his own, which resulted in less stress and more time with family. Had he chosen not to quit his former job, he might have been a billionaire today. My grandfather will turn 95 in October; even at this ripe old age, he is still strong, well and high-spirited. Looking at his story as a life example, he teaches us to work hard, but at the same time not to forget to enjoy life and have a good sense of humour about it all. 

Work is important, sure, but there is much more to life than just that. Overall, this is the ultimate key to happiness.