Your next car might drive itself. After years of trials on city streets, driverless vehicles are now nearing the live phase. Last moth, a driverless bus began carrying passengers through Lyon, France, Most in the automobile industry think self-driving vehicles will be on the road by 2020 or before.

    Driverless cars will at first be huddled with human-driven cars. But the first places where they will become dominant（统治的）are dense urban areas — precisely the spots most damaged by the automobile age. Many advanced cities are already reducing the role of human-driven cargo. Driverless cars will quicken that process and will bring us enormous benefits.

    Driverless cars will reduce accidents by around 90 percent. That's big—the annual death toll on the world's roads is about 1.2 million a year. Pollution and carbon emissions will drop, because urban driverless cars will be electric. The old, otherwise they would stay at home most of the time and the disabled and teenagers will suddenly gain mobility.

    On the other hand, driverless cars will bring catastrophe. The best thing about the automobile age was that it employed tens of millions of people to make, market, insure and drive vehicles. Over the next 20 years, the mostly low-skilled men who now drive trucks, taxis and buses will see their jobs reduced. Carmakers are especially scared. The few cars of the future might be made by tech companies such as Apple, Baidu and Google. Imaging the impact on Germany, where the automotive sector is the largest industry.

    Dramatic change is coming, and driverless cars could arrive by 2020. But governments have barely begun thinking about it. Only 6 percent of the biggest US cities have factored them into their long-term planning.

    A decade ago anyone hardly saw the Smartphone coming. It has bought an epidemic of mass addiction. Let's hope we do a better job of handling the driverless car.

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    In America, each of the states likes to promote itself with a slogan (口号). I currently live in Utah, where the slogan is '“Life Elevated”. It's a nod to outdoor entertainment in the hill country, including the ski industry. I previously lived in Colorado, a land with red dm. great mountains and golden plains. The slogan there is ''Colorful Colorado”. Years ago I lived in the “Peach State” of Georgia, and I grew up in New Mexico as a little boy, whose slogan is “Land of Enchantment (魔力)”.

    We never seemed to get away from dust in New Mexico, so I appreciate the story of a newcomer to the Land of Enchantment who learned about dusty wind. She was visiting an antique shop and the owner wiped down every item before showing it. The newcomer said, “Everything gets dusty here pretty quickly, doesn't it?” “That's not dust, honey,” the shop owner replied, “That's ENCIIANTMENT”. That made the problem more acceptable or at least can be live with. An escalator (自动扶梯) broke, so he posted a sign to warn customers. He chose not to use the traditional “Out of Order” or “Do Not Use” warnings. Instead, his sign read, “This Escalator Is Temporarily a Stairway”. He turned a minus into humor and made it a plus.

    And in fact there arc sonic things, like the weather, we can't change. All we can change is our ways that we think and feel about them. I believe one of the best techniques to do this is to find some humor in the situation. Finding something amusing or enjoyable of difficulty, a troublesome problem can be one of the most creative and effective things we can do. Sometimes the only sense you can make of a situation is a sense of humor.

    Twenty years ago, I drove a taxi for a living. One night I went to pick up a passenger at 2:30 a.m. When I arrived to collect, I found the building was dark except for a single light in a ground floor window.

    I walked to the door and knocked, "Just a minute," answered a weak, elderly voice. After a long pause, the door opened. A small woman in her eighties stood before me. By her side was a small suitcase.

    I took the suitcase to the car, and then returned to help the woman. She took my arm and we walked slowly toward the car.

    She kept thanking me for my kindness. "It's nothing," I told her. "I just try to treat my passengers the way I would want my mother treated."

    "Oh, you're such a good man." She said. When we got into the taxi, she gave me an address, and then asked, "Could you drive through downtown?"

    "It's not the shortest way," I answered quickly.

    "Oh, I'm in no hurry," she said. "I'm on my way to a hospice(临终医院). I don't have any family left. The doctor says I don't have very long."

    I quietly reached over and shut off the meter(计价器).

    For the next two hours, we drove through the city. She showed me the building where she had once worked, the neighborhood where she had lived, and the furniture shop that had once been a ballroom where she had gone dancing as a girl.

    Sometimes she'd ask me to slow down in front of a particular building and would sit staring into the darkness, saying nothing.

    At dawn, she suddenly said," I'm tired. Let's go now."

    We drove in silence to the address she had given me.

    "How much do I owe you?" she asked.

    "Nothing." I said.

    "You have to make a living," she answered. "Oh, there are other passengers," I answered.

    Almost without thinking, I bent and gave her a hug. She held onto e tightly. Our hug ended with her remark, "You gave an old woman a little moment of joy."

Doing crosswords(纵横字谜) is a fun way to kill the time and can also be educational. Difficult crosswords may leave you confused as you have no ideas on how to solve them sometimes. To perform well in this game, you need to have enough knowledge of different fields. If you are unable to do them and you have access to the answers, it is not generally considered cheating to look up an answer or two. However, in some cases, it does not follow the rule.

A crossword should not include someone else's answers, so even a quick look at a fellow student to complete a crossword would not be fair. Generally, you wouldn't have access to the answers.

Additionally, some crossword competitions should not be connected with cheating. Again, in such a situation, you usually won't have access to the answers. Turning to the Internet or referring to(查阅) any books of crosswords for answers is also unfair, since some people will complete the crosswords strictly with their own knowledge.

If you are not in a competitive environment, the check of a word can actually be an opportunity to learn how to become better at crosswords. Through looking up the answers (Although sometimes considered as cheat.), you can memorize whatever facts or word definitions (定义) you must look up. This will help you avoid the need to cheat in the future.

Some argue that cheating on crosswords is always wrong, and you're only cheating yourself if you are looking up the answers. It could be argued instead that cheating on crosswords that are done for fun or enjoyment can actually be an opportunity to benefit yourself because you're learning something new. Just don't forget to mention that you actually did cheat a little. Being honest is of great importance both to you and the other competitors.

It can be helpful to buy books of crosswords that have several different difficulty levels. If you are new to doing crosswords, you might want to put off working on crosswords until you are more confident in your skills.

In 1998, people in Na Doi, a quiet village in northwest Thailand, noticed that their fish catches in the nearby Ngao River were declining. The fish they did manage to net were also getting smaller. Together, Na Doi's 75 households decided to try a new solution: they would set aside a small stretch of river to be strictly off-limits to fishing.

The rules are usually simple: no fishing of any kind in an agreed-upon area marked by flags or signs. While freshwater reserves won't solve everything, in places where fish populations are under pressure, they can give species much-needed breathing room to rebuild their numbers, ultimately making them better able to weather other environmental problems.

Na Doi was the second village in the Ngao River valley to adopt this pioneering approach to freshwater fisheries management. Since the late 1990s, at least 50 other villages there have done the same. As a whole, the entirely grassroots-led reserves have been surprisingly successful, according to findings recently published in Nature. Most importantly, the Thailand case provides probably the best real-world proof that fisheries reserves can benefit not just oceans, but freshwater, too

In 2012. Aaron Koning, then a doctoral student at the University of Wisconsin, began investigating the Ngao River valley reserves to see how widespread and successful they truly were. Koning found, not surprisingly, that older and bigger reserves were more successful, because they offered more time and space—including more kinds of habitat—in which to rebuild fish populations and re-establish rare species. But even reserves established in the last couple of years showed clear benefits from being spared intense fishing pressure. "Reserves that were located closer to a village tended to have an advantage," Koning says, "probably because villagers were better able to enforce the rules."

By comparing different systems and approaches around the world, Koning and his colleagues hope to identify common factors for success that could be tailored to diverse rivers and lakes.