LONDON — A British judge on Thursday sentenced a businessman who sold fake(假冒的) bomb detectors(探测器) to 10 years in prison, saying the man hadn't cared about potentially deadly consequences.

    It is believed that James McCormick got about $77.8 million from the sales of his detectors - which were based on a kind of golf ball finder - to countries including Iraq, Belgium and Saudi Arabia.

    McCormick, 57, was convicted(判罪) of cheats last month and sentenced Thursday at the Old Bailey court in London.

    "Your cheating conduct in selling a great amount of useless equipment simply for huge profit promoted a false sense of security and in all probability materially contributed to causing death and injury to innocent people," Judge Richard Hone told McCormick. "you have neither regret, nor shame, nor any sense of guilt."

    The detectors, sold for up to $42,000 each, were said to be able to find such dangerous objects as bombs under water and from the air. But in fact they "lacked any grounding in science" and were of no use.

    McCormick had told the court that he sold his detectors to the police in Kenya, the prison service in Hong Kong, the army in Egypt and the border control in Thailand.

    "I never had any bad results from customers," he said.

    It's been said that honesty is the best policy．It sounds like the simplest thing in the world，but being truly honest with others and with yourself can be a real challenge．Most of us learned to be dishonest as children．Remember that dishonesty is rooted in fear，so you must look for and face those fears．By listing areas where you have a problem，and then working to deal with them，you can battle these habits．If you find yourself lying because you fear disapproval from someone，for example，perhaps you need to learn how to stop being a people pleaser and be yourself．Most importantly，admit your errors so that you can forgive yourself and use those experiences to reinforce your determination to do better．

    If you feel guilty for having been dishonest in the past，apologize to the person you lied to or find a creative way to make things right．If you've lied to a person who plays an important role in your life （a significant other，relative，or friend），the best （but most difficult） thing to do is to come clean．

    Think honestly．This may sound silly，but if you don't think honestly，you won't be honest．

    If you're pushed into a corner and don't know how to respond，you have the right to remain silent or say"Can we talk about this another time?"or"I really don't feel comfortable talking about this．"Don't say"I don't know．"

    Practice being honest on the simple things．Abraham Lincoln became famous for going to great lengths to return a few cents that did not belong to him，hence the nickname"Honest Abe"．By applying honesty to the little things，you will get in the habit of being honest in general．

    If you are a teacher, join Youngzine and sign up your class for free today! Youngzine is an online News Magazine for school age children. It provides an educational, entertaining, yet safe way for kids and adults to get the latest news from around the world.

    Many educators have said that Youngzine is a perfect complement to academic material, and can be a great resource for teachers and their classes. Learning through current events not only makes students more aware of what's going on in the world, but also helps absorb concepts better.

    Moreover, Youngzine now provides a safe “blog” environment for classrooms—a constructive, creative and controlled way for teachers to create classroom assignments (任务) and push for discussions on current events!

    Youngzine provides special features just for you. If you sign up as a teacher:

    Each of your classes get a “Classroom Code” that identifies the students in that class. For each class, you get a “Blog” where you can post assignments and have students respond. You can include specific articles and quizzes in each assignment.

    For each of your classes, you get to see a foil report of each student's activities just by going to your classroom tab (标签): their comments, assignment, responses, points and quiz results.

    If you are a teacher of homeschool, when you and your students share a computer, it requires each of you to log in/out separately. If it is inconvenient, you can use a single account in your class on Youngzine.

    It only takes 2 minutes to get started:

    JOIN YOUNGZINE (if you haven't already done so) and SIGN UP YOUR CLASS!

    If you have any questions or comments, let us know—we'd love to make this work for your class.

    Alexa is a form of artificial intelligence, or AI for short. Many people start their mornings by asking Alexa for the weather forecast or the latest news. A device(设备) that houses Alexa can also play music from your favorite playlists, keep a shopping list, order takeout food, answer questions, send messages and even run “smart” home controls.

    Training AI systems to respond to problems with human-like intelligence and learn from their mistakes can take months, or even years. Consider Alexa and similar software, such as Apple's Siri. To do the tasks its human owners ask, these systems must make sense of and then respond to sentences such as, “Alexa, play my Ed Sheeran playlist” or “Siri, what is the capital of India?”

    Computers can't understand language as it is spoken by people. So AI researchers must find a way to help humans communicate with computers. The technology used to get computers to “understand” human speech or text is known as natural language processing. By natural language, computer scientists refer to the way people naturally talk or write. To teach an AI system a task like comprehending(理解) a sentence or responding to a person 's last move in a board game, scientists need to feed it lots of examples.

AlphaGo is an AI system designed by Google that has beaten a human champion, Lee Sedol, at the strategy(策略) board game Go. To train AlphaGo, Google had to show it 30 million Go moves that people had made while playing the game. Then AlphaGo used what it learned to analyze those plays as it played against different versions (版本) of itself. During this practice, the program came up with new moves—ones never seen in games between people.

    Monty Hempel is a professor of environmental sciences at Redlands University in California. He studies ecological literacy­or eco-literacy, for short. Eco-literacy is the ability to think about and understand the natural processes that make life possible.

    Monty Hempel says eco-literacy gives people knowledge about environmental problems. But he says it does not always work on getting them to change their behavior.

    Mr. Hempel wrote part of the Worldwatch Institute's latest State of the World report. He says in his article, "Some people think that eco-literacy is just a green form of science literacy. And what I have tried to ask is whether that's enough. In other words, what an ecologically-literate person needs to know might include things like the effect of environmental pollution on ecosystem, the energy systems, and all of those kinds of things that we would call the science of ecology."

    "That doesn't seem to lead to action to protect our environment ­ to protect our life-support system to the level that we need to. Just knowing a lot about the environment doesn't mean that we actually act to save it. After all, actions speak louder than knowledge."

    He adds that people may not be very worried about environmental problems if they seem far away. "Some people call it psychological distance. A lot of climate issues are worse in the Arctic and most of us don't spend time in the Arctic. And so, there's a certain distance. But there's also a distance that's happening in the world as it urbanizes ­ people spending more time in front of screens and less time out in nature. We become, if you will, disconnected from the natural systems that used to be the key to success for a human being."

    To help children discover the wonders of nature, he adds that children should learn about nature in school. But he also points out we have a high mountain for people to climb from knowledge to action.

    Do you know that junk food isn't healthy? Of course you do! Do you eat it anyway? Of course you do! But a new study shows teaching adolescents about the ways food companies fool them into thinking junk food is cool can encourage kids to fight back—by eating healthier.

    The pull of junk food can be super-strong. It's designed to tasty; which makes eating well one of the great health challenges of our time. Everyone from doctors to the government has been trying to handle it. Yet we keep eating junk food.

    Professor Christopher Bryan says, "Food companies want you to want junk food." They spend millions of dollars coming up with new ways to^ promote junk food consumption. They hire scientists to make new junk food almost irresistible. They might do this, for example, by adding more sugar. Rats fed junk food for six weeks will even walk across a floor that gives them electric shocks just to get more of such food.

    Food ads often make unhealthy junk food seem healthy by featuring professional athletes, fit-looking pop stars and smiling, active teens. "We thought when the students learned this, it would matter to them," Bryan says. He worked with 8th graders at a Texas school. Half of them got a lesson Bryan created. It focused on the ways junk food is advertised, or marketed. A second group received lessons that focused on health. These lessons informed students junk food is had, and that foods like apples or carrots are a better choice. The students learned a bad diet can lead to major weight gain, and that being overweight puts people at risk for serious diseases. They also learned how eating well now can keep you healthy when you're older.

    After the lessons, the kids in both groups were asked how they felt about junk food. Most didn't have positive feelings about these unhealthy foods.