There are 115 distinct (独特的) species of pine trees with 35 native to North America. Pines are defined as evergreens with long, needle-like leaves and are only native to the northern hemisphere. Pine trees are an adaptable and tough species that can survive in many conditions where other plants cannot. The average pine tree is 45 to 60 feet tall, but some are nearly twice as high.

Western White Pine

    The western white pine grows the tallest of any pine tree, reaching up to 110 feet in height. They have blue-green needles arranged in bundles (束) of five and produce a long cone (球果).

Bristlecone Pine

    The bristlecone pine grows slowly, reaching about 20 feet tall. It is one of the oldest species of pine.

Mexican Pine

    The Mexican pine can grow to 50 feet tall, with long, slender needles that drape (下垂) off it like a weeping willow (柳树). Often nicknamed the “willow pine”, it is native to Mexico. Its leaves can droop up to 12 inches long.

Sugar Pine

    The sugar pine is another of the large pine species, such as the bull pine, but it also has the largest cones of any pine species, at 10 to 20 inches long. It grows from Oregon to California and is often used for construction.

Jack Pine

    The jack pine is one of the smallest species of pine with rare leaves. Compared with the pines mentioned above, it doesn't seem to belong in the family. It is considered a member of the scrub-pine family; it prefers sandy soil.

    Are you so sure your mistakes are just mistakes? Or could they be building blocks to a success beyond any you imagined?

    When my friend Dorothy goes home to visit her family each Thanksgiving, her mother serves the traditional “mistake salad”. The dish was born many years ago, Dorothy explains, when mother was using a cookbook to make a salad. In the process, by mistake, mother included half the salad ingredients (原料) from a recipe (食谱) on the left side of the open cookbook, and half the ingredients from a different salad recipe on the opposite page. Everyone enjoyed the salad so much that she continued to serve it every year. So it was really not a mistake at all.

    Then there was the man named Alfred, who invented dynamite (炸药). When Alfred's brother died, the city newspaper mistook his brother for him, saying in the news that the dead's most famous act was the creation of bombs (炸弹). Surprised to consider that his name would forever be connected with destruction, Alfred wanted to leave a more positive impression on people. So he set a prize for people who made contributions to world peace. Now the Nobel Prize, set up by Alfred Nobel, is the most respected prize in the world.

    Everything is part of something bigger, and so are mistakes. In his brilliant book Illusions, Richard Bach explains that every problem comes to you with a gift. If you only fix your attention on what went wrong, you miss the gift. If you are willing to look deeper and ask for the bright, the problem will disappear. You are left only with the learning, and you go forward on your path.

    Canada is a very large country. It is the second largest country in the world. By contrast(比较)it has a very small population. There are only about 29 million people (by the year 1996) there. Most Canadians are of British or French origin, and French is an official language of Canada as well as English. About 45% of the people are of British origin, that is, they or their parents or grandparent, etc., come from Britain. Nearly 30% are of French origin. Most of the French-Canadians live in the province of Quebec.

    Over the years, people have come to live in Canada from many countries in the world. They are from most European countries and also from China, besides other Asian countries.

    However, Canada was not an empty country when the Europeans began to arrive. Canadian Indians lived along the coast, by the rivers and lakes and in forests. Today there are only about 350,000 Indians in the whole country, with their own languages. In the far north live the Inuit. There are only 27,000 Canadian-Inuit. Their life is hard in such a harsh climate.

    An open office is supposed to force employees to cooperate. To have them talk more face to face. To get them off instant messenger (IM) and brainstorming new ideas. But a recent study by two researchers offers evidence to support what many people who work in open offices already know: It doesn't really work that way. The noise causes people to put on headphones and tune out. The lack of privacy causes others to work from home when they can. And the sense of being in a fishbowl means many choose email over a desk-side chat.

    Ethan Bernstein and Stephen Turban, two Harvard Business School professors, studied two Fortune 500 companies that made the shift to an open office environment from one where workers had more privacy. Using “sociometric” electronic badges (徽章) and microphones, as well as data on email and instant messenger use by employees, the researchers found in the first study that after the organization made the move to open-plan offices, workers spent 73% less time in face-to-face interaction. Meanwhile, email use rose 67% and IM use went up 75%.

    The participants wore the badges and microphones for several weeks before the office was redesigned and for several after, and the company gave the researchers access to their electronic communications. The results were astonishing. “We were surprised by the degree to which we found the effect,” Bernstein said. The badges could tell that two people had a face-to-face interaction without recording actual spoken words. The researchers were careful to make sure other factors weren't in question—the business cycle was similar, for instance, and the group of employees were the same.

    In a second study, the researchers looked at the changes in interaction between specific pairs of colleagues, finding a similar drop in face-to-face communication and a smaller but still significant increase in electronic correspondence.

    Another wrinkle in their research, Bernstein said, is that not only did workers shift the way of communication they used, but they also tended to interact with different groups of people online than they did in person. Moving from one kind of communication to another may not be all bad—“maybe email is just more efficient,” he said—but if managers want certain teams of people to be interacting, that may be lost more than they think. The shift in office space could “have strong effects on productivity and the quality of work”.

    Bernstein hopes the research will offer evidence that will help managers consider the possible trade-offs of moving to an open office plan. In seeking a lower cost per square foot, they buy into the idea that it will also lead to more cooperation, even if it's not clear that's true. “I don't blame the architects,” he said. “But I do think we spend more of our time thinking about how to design workplaces based on the observer's angle”—the manager—“rather than the observed.”

    People in South Korea who feel they can no longer bear the stress of everyday life now can choose to stay in a prison to relax and think deeply.

    In a society where pressure to do well in school and find highly-paid jobs is intense, a former lawyer came up with an extreme relaxation idea. Kwon Yong-seok created the "Prison Inside Me" —a stress-reduction center with a punishment theme. People come here to cut themselves off from the outside world and pay to be kept in 60-square-foot (5.6-square-meter) cells (囚室).

    Located on the outskirts of Hongcheon, about 58 miles (93 km) northeast of Seoul," Prison Inside Me" came to life after Mr. Kwon voluntarily asked to spend time behind bars for" healing reasons," but his request was turned down." I didn't know how to stop working back then," he said." I felt like I was being swept away against my will, and it seemed I couldn't control my own life." So, Kwon and his wife Roh Ji-hyang decided to take matters into their own hands, and designed and built a prison-like spiritual center. The construction was completed in June last year and cost about 2 billion won ($19 million).

    The facility includes 28 cells, furnished with only a toilet, a sink and a small table, where guests can spend time alone, thinking about life and enjoying private thinking periods. Moreover, guests can also join group thinking periods in the hall, where they are given instructions on how to free themselves from what Mr. Kwon calls the "inner prison" to find inner peace.

    According to the Wall Street Journal, hundreds of stressed South Koreans are checking in at the stress-reduction facility to think about their lives and regain control of it. A two-night stay at" Prison Inside Me" costs 150,000 won ($146).

    Mr. Kwon and his wife explained that at the beginning they had a different plan for the" relaxation center," and imagined a longer stay for their guests, but, given that people weren't able to take more time off, they had to reduce the length of stays to just two days.

    Park Woo-sub, a guest at" Prison Inside Me," said the experience helped him a lot." This is my third time in prison. Being kept in a prison makes me hard to breathe, but it also offers time to focus only on me and spend some quiet time with myself."

    Others said the experience would have been more helpful if the conditions had been poorer, like in a real prison.

    After years of trying, our neighbors convinced my parents that ice fishing would be a fun winter getaway from our dairy farm. Before that, their idea of entertainment involved driving around the countryside to see how the neighbors' crops were doing.

My parents eventually built a fish house and set it up on Wood Lake. We excitedly headed for the lake on many January and February weekends. By the time we arrived at our favorite fishing spot across the lake each day, somebody had usually made a clear path across the ice. The fish houses were together at the best fishing spots, forming some kind of a neighborhood.

    Our house was large enough so all four of us could fish at the same time. Each corner had a square cut out of the floor. We sat in comfort. You'd think ice fishing would be cold, but we had a small woodstove (木炉) inside, and we put snow around the bottom of the house to keep the wind from blowing underneath.

    Besides the thrill of watching your bobber (钓鱼浮标) dip below the water, lunch was always the highlight of the day. Mom would fry pork or hamburgers in a pan. The smell of cooking meat was the envy of every other fish house in the neighborhood.

    Our days passed with a mix of quiet time and family chatter. We talked about the farm or school. And of course, we shared fishing advice. Part of the fun of ice fishing was learning to understand and trust the sounds of the frozen lake. Healthy ice "talks" as it freezes and shifts. You could often hear the sound of a crack traveling through the ice.

    People who have never tried ice fishing may not think it sounds very exciting, but it was for us. Fishing trips were an adventure. We didn't always catch fish, but we always brought home great memories of a day with family and friends.