Now, I've talked much about education. I've talked about teachers' responsibility for inspiring students and pushing you to learn. I've talked about your parents' responsibility for making sure you stay on track, and you get your homework done, and don't spend every waking hour in front of the TV .I've talked a lot about your government's responsibility for setting high standards.

    But at the end of the day, we can have the most dedicated teachers, the most supportive parents, the best schools in the world-and none of it will make a difference, none of it will matter unless all of you fulfill your responsibilities, unless you show up to those schools, unless you pay attention to those teachers, unless you listen to your parents and grandparents and other adults and put in the hard work it takes to succeed. That's what I want to focus on today: the responsibility each of you has for your education.

    I want to start with the responsibility you have to yourself. Every single one of you has something that you're good at. Every single one of you has something to offer. And you have a responsibility to yourself to discover what that is. That's the opportunity an education can provide.

    And no matter what you want to do with your life, I guarantee that you'll need an education to do it. You want to be a doctor, or a teacher, or a police officer? You want to be a nurse or an architect, a lawyer or a member of our military? You're going to need a good education for every single one of those careers. You cannot drop out of school and just drop into a good job. You've got to train for it and work for it and learn for it.

    That's okay. Some of the most successful people in the world are the ones who've had the most failures. J.K. Rowling's who wrote Harry Potter- her first Harry Potter book was rejected 12 times before it was finally published. Michael Jordan was cut from his high school basketball team. He lost hundreds of games and missed thousands of shots during his career. But he once said, “I have failed over and over and over again in my life. And that's why I succeed.”

And even when you're struggling, even when you're discouraged, and you feel like other people have given up on you, don't ever give up on yourself, because when you give up on yourself, you give up on your country.

    Located in Los Angeles, University of Southern California is in the heart of a leading city. Although LA ranks highly in The Economist s Safe Cities Index, navigating and city calls for certain safety precautions (预防措施) along with practicing common sense.

    Mobile Safety App Powered by LiveSafe

    The Mobile Safety App powered by LiveSafe, manage by the USC Department of Public Safety and the USC Department of Emergency Planning, is a free downloadable app that that mobile users can use to initiate contact with emergency responders around the campus. Features include: immediate “push button” calls to DPS, easy reporting for suspicious activity or crimes in progress, and location services to notify friends of your route through campus.

    Blue Light Phone Locations

    The University Park has multiple blue light phones that are strategically placed throughout campus. Take note of where the closest ones are on your route. They come in handy in case you lose your phone or in an emergency. These phones are directly connected to USC's Department of Public Safety's 24-hour communications center. Besides emergency needs, it can also be used to report suspicious activity, request for an escort (护送) if you feel unsafe and to report a crime.

    Trojans Alert

    Trojans Alert is an emergency notification system that allows university officials to contact you during an emergency by sending messages via text message or email. When an emergency occurs, authorized USC senders will instantly notify you with real-time updates, instructions on where to go, what to do (or what not to do), whom to contact and other important information. All members of the USC community, as well as parents and regular visitors to campus, are strongly encouraged to sign up for Trojans Alert.

    These days, I walk down the steps leading toward the south end of the All England Club in Wimbledon, and still look for the Crow's Nest, a small green observation tower with an outer ladder that I used to climb on for a wide view of the grounds, but which has since been knocked down.

    The Crow's Nest was a particularly useful point, because it allowed a tennis writer to keep track of the action on as many as 10 outside courts at a time. At days end, reporters from different nations would share notes on what they had observed all over the grounds.

    Twenty-seven years later, the press room has touch screens that allow us to watch live videos from any court, and even go back to watch key moments in key matches long after they have finished. You could cover Wimbledon without leaving your seat. But that is a bit like spending all your time ordering room service and looking up fun facts on Wikipedia.

    More than at any other tennis tournament, there is also an appetite for stories that deal with the setting, the history and the traditions.

    If they change the price of the fish tacos (鱼肉卷饼) at the United States Open, it's not a story. If they change the price of the strawberries and cream, the signature treat at Wimbledon. It's time to email your editor using capital letters.

    The new retractable (可伸缩的) roof was put in place in 2009. Until then, you always had to have a rainy-day story in your notebook because there were no guarantees any matches would be played. Now tennis is a sure thing on Centre Court, which has made tennis reporters a bit less creative. But at least it guarantees us daily access to the most atmospheric place in the sport.

    So much has changed, but Centre Court remains true to its original spirit: more a theater than a stadium. Catching that feeling is part of covering Wimbledon, too.

    SILVER SPRING, MARYLAND — Student engagement (参与) is a goal in schools everywhere. A teacher in the Washington suburbs has found a way to engage and motivate students — by ringing rhythm and fun to mathematics. The approach works well especially for students who speak English as a second language.

Making math fun

The voice heard in the video belongs to mathematics teacher Jake Scott. Most of the performers are his students. "I use rap because it is something that appeals to the students, and also because music aids memory," Scott explains.

    Scott started using rap videos three years ago. So far he has produced nine, including

Scott started using rap videos three years ago. So far he has produced nine, including YouTube favorites Triangle Experts and Quadratic Formulatic, which have been viewed tens of thousands of times. "It is fun and the whole process is something that students appreciate," Scott says.

    Empowering students

    Blair High School principal Renay Johnson is a big supporter. She even appears in Scott's latest video, Undefined Expressions.

"Mr. Scott is very motivating and engaging for students," Johnson notes. "He enjoys what he does. As you know he engages students and mathematics through music. But he is also our wrestling coach. He also sponsors National Honor Society. And he is also a director of after school sports academy. I am lucky to have him here as a teacher."

    Scott was recognized as an outstanding educator last year by the Montgomery County Council. He was also honored as 2011 teacher of the year by an African-American civil rights organization.

    Jake Scott says he wants mathematics to be something that students look forward to learning. And he says the results will help them on a path to college and a career.

    Are you interested in hi-tech products? Here are some that you might find at the market pretty soon.

    CX-1

    Tired of dragging your bag through busy airports? Then you might want to consider CX-1. The smart suitcase uses facial recognizing software to follow its owner as he / she is checking in or heading to the gate. Though CX-1 can only move at a speed of up to seven miles per hour, a tiny tool enables owners to keep track of the suitcase's location. It is expected to be sold on the market by late 2018.

    Aibo

    Sony's latest version of the Aibo robotic dog is almost as fun as the real thing—but much less work. The pet dog can recognize its owner, obey several commands, and even recall the behavior that pleases its master the most. Aibo can also learn new tricks, take photographs, and over time, develop its own unique personality.

    Forpheus

    Forpheus, an "athletic" robot developed by Japanese technology company Omron. It teaches users how to play ping-pong. The 10-feet-tall machine uses a camera and artificial intelligence to track the ball's speed and can predict the ball's direction correctly. The smart Forpheus can also quickly test its player's abilities and adjust the playing level, making the game fun.

    Black Box VR

    Though many people determine to go to the gym once a week, few reach their goal. Black Box VR wants to change that by turning hard exercise into fun video games. Using it, gym users will find themselves fighting enemies, including big creatures—all while getting exercise.

    Scientists are attempting to extract (提取) cells from a 40,000-year-old horse in hope of using the sample to clone the extinct (灭绝的) species back into existence. The male baby horse was discovered in 2018 in permafrost (永冻土) in northeastern Siberia of Russia.

    A team of scientists from South Korea and Russia believes the young horse, called the Lenskaya or Lena horse, was about 20 days old when it died. The species of horse, now extinct, is between 30,000 and 40,000 years old. Thanks to the terrible coldness, the animal's tissue was preserved enough for the scientists to obtain samples.

    Semyon Grigoriev, head of the lab at the Mammoth (猛犸象) Museum of the North-Eastern Federal University in Yakutsk, said the horse was "well - preserved" and a "great find". There is no damage to the horse's body and even its hair is undamaged. The unfortunate animal, according to Gngo-riev, "could have drowned after falling into some kind of a natural trap."

    Hwang Woo-suk, a researcher from South Korea working on the project, said, "If researchers find a cell, they will do their best to clone the animal. If we get live cells from this ancient baby horse, it would be wonderful in terms of cloning."

    After that, they will make a cloned embryo (胚胎) and a female horse carry it as its mother. Hwang said modern-day horses are "very similar to the ancient one," so there would be no problem getting help from a modern-day female horse.

    The scientists are hoping the experiment on the baby horse will give them experience in progressing toward their ambitious goal-bringing back the extinct woolly mammoth.

    "If we manage to clone the horse-it will be the first step to cloning the mammoth." Hwang said.