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    It happened to me recently. I was telling someone how much I had enjoyed reading Barack Obama's Dreams From My Father and how it had changed my views of our President. A friend I was talking to agreed with me that it was ,in his words, “a wonderfully written book ”. however, he then went on to talk about Mr. Obama in a way which suggested he had no idea of his background at all .I felt that I was talking to a book liar.

    And it seems that my friend is not the only one. Approximately two thirds of people have lied about reading a book which they haven't .In the World Book Day's “Report on Guilty（愧疚的） Secrets”, Dreams From My Father is at number 9.The report lists ten books, and various authors, which people have lied about reading, and as I'm not one to lie too often (I'd hate to be caught out ),I'll admit here and now that I haven't read the entire top ten .But I am pleased to say that, unlike 42 percent of people, I have read the book at number one ,George Orwell's 1984.I think it's really brilliant.

    The World Book Day report also has some other interesting information in it. It says that many people lie about having read Jane Austen, Charles Dickens, Fyodor Dostoevsky(I haven't read him, but haven't lied about it either )and Herman Melville.

    Asked why they lied, the most common reason was to “impress” someone they were speaking to. This could be tricky if the conversation became more in –depth!

    But when asked which authors they actually enjoy, people named J.k. Rowling, John Grisham, Sophie Kinsella(ah, the big sellers, in other words).Forty-two percent of people asked admitted they turned to the back of the book to read the end before finishing the story(I'll come clean: I do this and am astonished that 58 percent said they had never done so).

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    How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone.

    The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.

    The toothbrush will be able to teach you to brush right (don't forget the insides of the teeth!) and make sure you're brushing long enough. “It's kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.

    The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart but also fun,” Several says.

    Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.

    The company says the Kolibree will go on sale this summer, for $99 to $199, developing on features. The U.S. is the first target market.

    Serval says that one day, it'll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.

    Oh my God, the robots are taking over! We're doomed! Doomed! Now that I've gotten that out of my system, it's become clear that while we may or may not be doomed, the robots are taking over. The latest example is the government's new guidelines for self-driving cars.

    Tesla, Google and Uber are already testing driverless cars in cities across America. Uber chief executive Travis Kalanick is among those predicting that by 2021, self-driving cars will play a big part in urban settings.

    Nearly 40,000 people died last year in this nation in automobile-related accidents, and we believe driverless cars can save tens of thousands of lives annually.

    It makes sense. Robot drivers are less likely to get drunk, drive without a license, text while driving or feel agitated at the scene of a traffic jam. On the other hand, I wonder how these highly sensitive cars will react with walkers constantly dashing into the street. Will they jam on the brakes every 10 seconds?

    But there's a bigger picture. Not only are robots replacing humans behind the wheel, but behind the work desk, in warehouses, senior homes, you name it. Robots aren't just taking over in the workplace.

    The question is, where can't a robot function better than a human? How about writing songs? A robot can go through every combination of notes in record time and come up with a pleasing melody. The lyrics might be a different story. Is a Grammy-winning song co-written by Hank Human and R-3071 in our future?

    Finally, it's only a matter of time until we have robot politicians and presidential candidates. Why not? They can be programmed to be experts in world and domestic affairs and come up with the best solutions without corruption and bad humors.

    Actually, it's too bad such technology isn't available in 2018. Pretty sure the robot would win in a landslide.

    With more than 100,000 people aged 100 or over, Spain is the country with the greatest life expectancy after Japan. How do you live to 100? Here 4 of the country's centenarians (百岁老人) give their advice on staying youthful.

Francisco Nunez, 112

    He is from Bienvenida, Badajoz, southern Spain. Nunez lives with his daughter. He says he doesn't like the pensioners' (领养老金的人) daycare center because it's full of old people, whose negative attitude towards life affects him deeply sometimes. Despite his old age. he has always maintained (保持) a youthful outlook, and that is what has kept him going on.  Pedro Rodriguez, 106

    He lives in Cangas de Onis, Asturias, northern Spain. Rodriguez plays the piano every day in the living room of the flat where he lives with his wife who is nearly 20 years younger than him. Their daughters visit them often. His hobby is something that he feels has kept him young. "The nuns (修女) taught me how to play the piano as a child," he says.

    Maximino San Miguel, 102

    He lives in Leon, northern Spain. San Miguel discovered his passion (酷爱) for amateur dramatics at the age of 80 and has participated in many local productions. He didn't go to school as a child because he was sent to work as a shepherd (牧羊人). He prefers reading books about drawing and traveling. Now this hobby, he said, has kept him full of energy.  Pilar Fernandez, 101

    She lives with her daughter Pili, granddaughters Flori and Ana in Ambas, Asturias, northern Spain. Fernandez suffered hunger and hardship during the war years alongside her nine brothers and sisters. To avoid history repeating itself, she limited herself to just one child. "From pure fear, I didn't have anymore," says Fernandez. One of the best things for her health, she says, is tending livestock (家畜) and a vegetable garden.

    Forests are always losers at the Olympics, and that's unlikely to change anytime soon.

    For the winter games in PyeongChang, South Korea, virgin forest was destroyed on Mount Gariwang to accommodate ski runs. For the 2022 Winter Olympics in Beijing, a ski run is set to wipe out part of the Songshan National Nature Reserve And let's not forget the 240 acres of Atlantic Forest that were leveled for the 2016 games in Rio de Janeiro to make way for a golf course.

    For the upcoming Tokyo games, environmental and human rights advocates have been raising alarms about the use of tropical wood to build the New National Stadium. Activists have fought against such environmental destruction. The damage is often permanent, threatens endangered plants and animals and, in some cases, causes conflicts with native people But frequently the country's organizing committee, and the International Olympic Committee (IOC) have found ways to make it reasonable—despite a paragraph in the Olympic Charter that states that the IOC's role is to "encourage and support a responsible concern for environmental issues."

    As it stands now. the IOC has little authority over a city's local organizing committee, which finally plans the event, Chappelet, professor of public management at the University of Lausanne, told Earther. "Even if the IOC is dissatisfied with the way host cities have prepared for the games, they have no built-in systems to supervise (监督) them so that they strictly follow the Olympic Charter. The only thing they can do if they're not happy is to withdraw the right to organize the game. But the IOC could include more enforcement (执行) systems into the contract (合同) they make with the host city, he added. That contract must be signed and obeyed by everyone. Those who break it could be fined.

    Boykoff, the author of several books on the Olympics, suggested a similar solution. "The IOC could insist that host cities prioritize their ecological promises, but instead they look the other way, time and time again," he said.