When Boris left school, he could not find a job. He tried hard and he wrote letters to many companies until he could not afford to buy any more stamps. Boris began to lose his confidence, then depressed. Still he went on trying and still he failed. He began to think that he had no future at all.

    “Why don't you start your own business?” one of his uncles told him. “The world is a money-locker. You'd better find a way of opening it.”

    “But what can I do?”

    “Get out and have a look round.” advised his uncle. “See what people want; then give it to them, and they will pay for it.”

    Boris began to cycle around the town and found a suitable piece of waste ground in the end. Then he set up his business as a cycle repairer. He worked hard, made friends with his customers and gradually managed to win his good fame. A few months later, he found that he had more work than he could deal with by himself. He found a number of empty shops but they were all no good: in the wrong position, too expensive or with some other problems. But at long last, he managed to find an empty shop in a new place where there were plenty of customers but no competition.

    Boris and his assistant taught themselves how to repair motor-cycles. Slowly but surely the profits increased and the business developed. At last, Boris had managed to open the money-locker and found bank notes and gold coins inside.

    I am a strong believer that if a child is raised with approval, he will learn to love himself and will be successful in his own way.

    Several weeks ago, I was doing homework with my son in the third grade and he kept standing up from his chair to go over the math lines. I kept asking him to sit down, telling him that he should concentrate better. He sat but seconds later, as if he didn't even notice he was doing it, he got up again. I was getting frustrated, but then it hit me. I started noticing his answers were much quicker and accurate when he stood up. Could he be more intent while standing up?

    This made me start questioning myself and what I had been raised to believe. I was raised to believe that a quiet, calm child was a sure way to success. This child would have the discipline to study hard, get good grades and become someone important in life.

    Now those same people perhaps come to realize that their kids are born with their own sets of DNA and personality traits, and all you can do is loving and accepting them. As parents, throughout their growing years and beyond that, we need to be our kids' best cheerleaders, guiding them and helping them find their way.

    I have stopped asking my son to sit down and concentrate. Obviously, he is concentrating just in his own way and not mine. We need to learn to accept our kids' ways of doing things. Some way may have worked for me but doesn't mean we need to carry it through generations. There is nothing sweeter than being individual and unique. It makes us free and happy and that's just the way I want my kids to live their own life.

    Philadelphia, Pennsylvania is America's fifth largest city. Once a major American colonial city, it is the home of America's first library, its first hospital, and its first zoo. Now it is also the first US city to be named a World Heritage City. On November 6, 2015, Philadelphia joined more than 260 other cities that have been recognized for their influence on the world. These cities include Paris, France, Florence, Italy, and Cairo, Egypt.

    "Today marks the start of a new and exciting chapter in the history of Philadelphia," remarked Philadelphia Mayor Michael Nutter when the announcement was made. "As a World Heritage City, Philadelphia is being officially recognized on the global stage for its wealth of contributions to the world.

    To be named a World Heritage City, a city must be home to a UNESCO World Heritage site. UNESCO World Heritage sites are selected for their universal value and significance. For Philadelphia, the site is Independence Hall.

    Independence Hall is where two of the most important documents in US history—the Declaration of Independence and the US Constitution—were adopted. The Declaration of Independence, approved on July 4, 1776, united the 13 former British colonies and declared them independent from British rule. The US Constitution, signed in 1787, established the American democratic system of government. A democracy is a system of government in which the people elect their leaders. The Constitution later spelled out the basic freedoms American citizens have.

    Philadelphia Deputy Mayor Alan Greenberger says the city's selection as a World Heritage City also reflects its educational, cultural, and economic achievements. The city is home to dozens of colleges and universities, and many museums, such as the Philadelphia Museum of Art. "Philadelphia has rightfully earned its place as one of the greatest cities in the world." Greenberger says.

    Central Park

    Explore Central Park, one of the largest city parks in the world and one of the most famous symbols of New York. Let's have a look at its main sights.

    Central Park is New York's largest city park and one of the biggest in the world, with an area of 843 acres (about 3.4km²). This park is home to man-made lakes, waterfalls, grass and wooded areas. You will also find the Central Park Zoo, among other attractions in this greenspace of New York.

    Besides being the city's primary green lungs, Central Park is also a favorite spot for many New Yorkers. It is perfect for sunbathing, going for walks, or doing any outdoor sports. Something that we found curious is seeing so many people running with their babies in prams (婴儿车).

    On Foot or by Bicycle

    To get to know some of the wildest parts of Central Park we suggest walking. However, to get a general feel for the whole park, the best thing to do is hire a bicycle and enjoy the scenery.

    If you decide to hire a bike, you will find lots of bike rental stores around Central Park that are not very expensive.

    Open Time

    From 7 a.m. to 10 p.m. on weekends.

    From 6 a.m. to 8:30 p.m. on weekdays.

    Price

    Entry to the Park is free. But if you visit some parts like Central Park Zoo, you need to buy a ticket.

    Transport

    Subway: Line 5, 6, 7, A, B, C and D.

    Bus: Line M1, M2, M3, M4 and M10.

    Nearby places

    Metropolitan Museum of Art (447 m)

    Guggenheim Museum (564 m)

    American Museum of Natural History (688 m)

    Whitney Museum of American Art (1 km)

    The Frick Collection (1.3 km)

    To find out how the name Canada came about we must go back to the 16th century. At that time, the French dreamed of discovering and controlling more land, of expanding(扩大) trade beyond their borders and of spreading their beliefs across the world. In 1535, Francois I, king of France, ordered a navigator(航海家) named Jacques Cartier to explore the New World and search for a way to India.

    Carrier first arrived at the gulf of the St. Lawrence, which he intended (打算) to explore. He did not know what to expect but he hoped that this gulf was just an arm of the ocean between two islands. If it was, he would soon be on his way to the Far East. So he sailed upstream along the St. Lawrence River. However, instead of reaching Asia he arrived at Quebec or Standalone, as the Indians called it. It was at this point that the term "Canada" entered the country's history. Apparently the word "Canada" came from an India word" kanata", which means community or village. Cartier first used it when he referred to Standalone or Quebec. What a huge "village" Canada is!

Getting rid of old tyres (轮胎) has long been a problem. Most are thrown into landfills or piled up in storage. Energy recovery is another common method. This involves burning tyres to generate electricity or heat for industries, but that produces planet warming pollution; or we use them to

repair roads, but chemicals from them might pollute the ground.

Some firms, therefore, have begun exploring an alternative. One such firm is Wastefront, which owns a big tyre-recycling plant in north-east England. In a couple of years, it will be able to turn 8 million old tyres into new products, including a black liquid called TDO (轮胎衍生油).

The process works by deconstructing a tyre into steel, rubber, and carbon black. After tearing down the steel, the remaining material is exposed to high temperatures in the absence of air to make the rubber change into a mix of hydrocarbon gases, and then they're removed. What is left behind is pure carbon black. Once the removed gases cool down, a part of them liquefies(液化) into TDO. The remaining gases are to be burned to fuel the process. This creates a closed-cycle system that prevents emissions. 

The carbon black can be reused to make new tyres. That is of interest to tyre-makers because it helps efforts to become carbon neutral—achieving a balance between the amounts of carbon dioxide produced and the carbon dioxide removed from the atmosphere. Producing new carbon black requires burning heavy oil or coal, which lets off plenty of greenhouse gases.

The recovered TDO is well-suited for making diesel ( 柴油). While not completely carbon-neutral, it does produce an 80-90% reduction in emissions of carbon dioxide, compared with the conventional fuel. The future market for such cleaner fuels will remain large, even though electric vehicles are on the rise. Fossil-fueled vehicles will exist for decades, particularly the big burners of diesel—trucks, which are harder to electrify. The fuel is also needed by trains and ships. So, anything that helps clean up overall emissions is useful—especially if it also eases a mountainous waste problem.