Dear Seth,

    You're only three years old, and at this point in your life you can't read, much less understand what I'm going to try to tell you in this letter. But I've been thinking a lot about the life that you have ahead of you, about my life so far as I reflect on what I've learned, and about my role as a dad in trying to prepare you for the trials that you will face in the coming years.

    You won't be able to understand this letter today, but someday, when you're ready, I hope you will find some wisdom and value in what I share with you.

    You are young, and life has yet to take its toll on you, to throw disappointments and heartaches and loneliness and struggles and pain into your path. You have not been worn down yet by long hours of thankless work, by the slings and arrows of everyday life.

    For this, be thankful. You are at a wonderful stage of life. You have many wonderful stages of life still to come, but they are not without their costs and perils.

    I hope to help you along your path by sharing some of the best of what I've learned. As with any advice, take it with a grain of salt. What works for me might not work for you.

    Life Can Be Cruel

    There will be people in your life who won't be very nice. They'll tease you because you're different, or for no good reason. They might try to bully you or hurt you.

    There's not much you can do about these people except to learn to deal with them, and learn to choose friends who are kind to you, who actually care about you, who make you feel good about yourself. When you find friends like this, hold on to them, treasure them, spend time with them, be kind to them, love them.

    There will be times when you are met with disappointment instead of success. Life won't always turn out the way you want. This is just another thing you'll have to learn to deal with. But instead of letting these things get you down, push on. Accept disappointment and learn to persevere, to pursue your dreams despite pitfalls. Learn to turn negatives into positives, and you'll do much better in life.

    You will also face heartbreak and abandonment by those you love. I hope you don't have to face this too much, but it happens. Again, not much you can do but to heal, and to move on with your life. Let these pains become stepping stones to better things in life, and learn to use them to make you stronger.

    But Be Open to life Anyway

    Yes, you'll find cruelty and suffering in your journey through life … but don't let that close you to new things. Don't retreat from life, don't hide or wall yourself off. Be open to new things, new experiences, new people.

    You might get your heart broken 10 times, but find the most wonderful woman the 11th time. If you shut yourself off from love, you'll miss out on that woman, and the happiest times of your life.

 You might get teased and bullied and hurt by people you meet … and then after meeting dozens of jerks, find a true friend. If you close yourself off to new people, and don't open your heart to them, you'll avoid pain … but also lose out on meeting some incredible people, who will be there during the toughest times of your life and create some of the best times of your life.

    You will fail many times but if you allow that to stop you from trying, you will miss out on the amazing feeling of success once you reach new heights with your accomplishments. Failure is a stepping stone to success.

    Life Isn't a Competition .You will meet many people who will try to outdo you, in school, in college, at work. They'll try to have nicer cars, bigger houses, nicer clothes, cooler gadgets. To them, life is a competition — they have to do better than their peers to be happy.

    Here's a secret: Life isn't a competition. It's a journey. If you spend that journey always trying to impress others, to outdo others, you're wasting your journey. Instead, learn to enjoy the journey. Make it a journey of happiness, of constant learning, of continual improvement, of love.

    Don't worry about having a nicer car or house or anything material, or even a better-paying job. None of that matters a whit, and none of it will make you happier. You'll acquire these things and then only want more. Instead, learn to be satisfied with having enough — and then use the time you would have wasted trying to earn money to buy those things … use that time doing things you love.

    Finally, know that I love you and always will. You are starting out on a weird, scary, daunting, but ultimately incredibly wonderful journey, and I will be there for you when I can. Godspeed.

Love,

Your Dad

    The health-care economy is filled with unusual and even unique economic relationships. One of the least understood involves the peculiar roles of producer or “provider” and purchaser or “consumer” in the typical doctor-patient relationship. In most sectors of the economy, it is the seller who attempts to attract a potential buyer with various appealing factors of price, quality, and use, and it is the buyer who makes the decision. Such condition, however, is not common in most of the health-care industry.

    In the health-care industry, the doctor-patient relationship is the mirror image of the ordinary relationship between producer and consumer. Once an individual has chosen to see a physician — and even then there may be no real choice — it is the physician who usually makes all significant purchasing decisions: whether the patient should return “next Wednesday”, whether X-rays are needed, whether drugs should be prescribed, etc. It is rare that a patient will challenge such professional decisions or raise in advance questions about price, especially when the disease is regarded as serious.

    This is particularly significant in relation to hospital care. The physician must certify the need for hospitalization, determine what procedures will be performed, and announce when the patient may be discharged. The patient may be consulted about some of the decisions, but in general it is the doctor's judgments that are final. Little wonder then that in the eye of the hospital it is the physician who is the real “consumer”. As a consequence, the medical staff represents the “power center” in hospital policy and decision-making, not the administration.

    Although usually there are in this situation four identifiable participants— the physician, the hospital, the patient, and the payer (generally an insurance carrier or government)— the physician makes the essential decisions for all of them. The hospital becomes an extension of the physician; the payer generally meets most of the bills generated by the physician/hospital, and for the most part the patient plays a passive role. We estimate that about 75-80 percent of health-care choices are determined by physicians, not patients. For this reason, the economy directed at patients or the general is relatively ineffective.

    Basketball Statistician Help Wanted

    The Athletic Department is looking for students to help assist staff during the Fall 2016, Winter 2016-17 and Spring 2017 semesters. Students in this position will be keeping live statistics during basketball games. Students must meet all of the following requirements:

    Good computer skills

    Available evenings and weekends

    Knowing basketball rules and statistics

    Students interested in working for the Athletic Department should contact the Athletic Coordinator at their respective(各自的) campuses.

    TP/SS Athletic Coordinator, Michael Simone, 240-567-1308

    Rockville Athletic Coordinator, Jorge Zuniga, 240-567-7589

    Springfield Athletic Coordinator, Gary Miller, 240-567-2273

    Germantown Athletic Coordinator, GauriChavan, 240-567-6915

    On May 29, 1973, Thomas Bradley, a black man, was elected mayor of Los Angeles. Los Angeles is the third largest city in the United States, with a population of three million. About sixteen percent of the city's population are black.

    News of this election appeared on the front pages of newspapers everywhere in the United States. Here is how one major newspaper reported the event.

    LOS ANGELES ELECTS BRADLEY MAYOR UNSEATING YORTY

    BLACK WINS 56% OF VOTES

    Bradley called his victory over Yorty "the fulfillment of a dream". During his childhood and youth, people had kept telling him, "You can't do this, you can't go there, because you are a Negro." Nevertheless he had won a decisive victory over a man who had been won 43.7 percent.

    Los Angeles voters have had many opportunities to judge. Thomas Bradley had to form an opinion of him. The son of a poor farmer Texas, he joined the Los Angeles police force in 1940. During his twenty-one years on the police force he earned a law degree by attending school at night. He was elected to the city council years ago.

    At the time of the Los Angeles election, three other American cities already had black mayors, but none of these cities had as large a population as Los Angeles. Besides, the percentage of blacks in those other cities was much larger. Cleveland, Ohio, had thirty-six percent black when Carl Stokes was elected mayor of Cleveland in 1967. In the same year Richard Hatcher was elected mayor of Cary. In Newark, New Jersey, sixty percent of the population were black when Kenneth Gibson was elected in 1970. Thus election of a black mayor in those cities was not very surprising.

    In Los Angeles, thousands of white citizens voted for Thomas Bradley because they believed he would be a better mayor than the white candidate. Bradley had spent forty-eight of his fifty-five years in Los Angeles. Four years ago, Bradley lost mayoral election to Yorty. This time Bradley won.

    City trees grow faster and die younger than trees in rural forestry, a new study finds. Over their lifetimes, then, urban trees will likely absorb less CO₂ from the air than forest trees.

    As we all know, the earth would be freezing or burning hot without CO₂. However, CO₂ is a greenhouse gas, meaning it traps energy from the sun as/heat. That makes temperatures near the ground rise. Human activities, especially the widespread burning-of fossil(化石)fuels, have been sending extra greenhouse gases into the air. This has led to a rise in average temperatures across the globe.

    Studies had shown forests readily absorb CO₂, but there hadn't been much data on whether city trees grow, die and absorb CO₂ at the same rate as forest trees do. So some researchers decided to find out.

    To figure out how quickly trees were growing, researchers tracked their diameters (the width of their trunks) between 2005 and 2014. A tree's diameter increases as it grows, just as a person's waist size increases as they gain weight. About half the weight of a tree is carbon, research has shown. Most of the rest is water. Over the nine years' tracking, the researchers found city trees absorbed four times as much carbon from the air as forest trees. However, they were twice as likely to die. So over the lifetime of each type of tree, forest trees actually absorbed more CO₂.

    City trees grew faster because they had less competition for light from their neighbors. In a forest，trees tend to grow close together，shading their neighbors. Street trees also benefit from higher levels of nitrogen (氮)in rainwater. Nitrogen helps plants grow. Waste gases from gas-burning cars also contain nitrogen, thus enriching city air with nitrogen. Later, rainwater may wash much of it to the ground. Some street trees may also have better access to water than trees in the country because the underground water pipes can leak.

It was the early 1950s, and I was a member of the A class at Armidale Senior High School in norther New South Wales. 

In the second and third years we all did General Maths, and our teacher was Mrs Lindsay-Clare Lindsay. Her arrival at our classroom was always quick, "Good morning everyone!" Then our books would be out, and we would watch her closely. 

I've thought a lot about Clare Lindsay over the years. What was her special magic? There are two reasons and I think they're necessary for all excellent teachers. She loved her subject, and she loved us, in a patient and objective way. She had no favorites that I can remember, and she called us all by our first names pleasantly She had a way of teaching that I loved. 

"Now we could go down this path couldn't we? We could argue this, and then this, but that doesn't work because of this. No Can Do(NCD)!" She would put a big cross, and write" NCD" against what she had put down. "Right! Why not go down this new path?" And she would show us that this new way worked. It was fun. We, whether the poor students or the skilled, all did well because of her. I've never found maths difficult, and I_put_that_skill_down_to_her. 

In the fourth and fifth years,we were divided into the science and arts streams(按学生能力划分的班级), and Mrs Lindsay didn't teach us any more. But as the Leaving Certificate exams were coming, one of my friends became nervous about how much maths he didn't know. With great courage, he went to see Mrs Lindsay, and asked if she would help him prepare for his General Maths paper. "Of course!" she said, and did just that, after school, in her own time. He passed. What a good teacher!