MOOCs (Massive Open Online Courses) are free, but without tutoring, and are open to anyone, anywhere in the world. The courses are flexible — normally three to five hours of study a week — done at any time, short (5 to 10 weeks) and video-rich. They are also heavily dependent on crowd sourcing: you can discuss a course with fellow students through online forums, discussion boards and peer review. Students don't have to finish the courses, pass assessments or do assignments, but, if they do, they get a certification of participation.

    The Open University launched FutureLearn, the UK's answer to US platforms such as Coursera, EdX and Udacity, which have been offering MOOCs from top US universities for the past two years. The response has been incredible, with more than three million people registering worldwide. Meanwhile, in 2012, Edinburgh University became the first non-US institution to join Coursera's partnership, comprising 13 universities. “We already run 50 online master's degrees, so this was a logical expansion,” says Professor Jeff Haywood, Edinburgh's vice-principal. “It's an investment in teaching methods research. How am I going to teach introductory philosophy to 100,000 people? That's what I call educational R&D.” He adds “If you look ahead 10 years, you'd expect all students graduating to have taken some online courses, so you've got to research that. Our MOOCs are no more in competition with our degrees than a lifelong learning course because they don't carry credits.”

    Cooperation is key, Haywood stresses. It is far better to offer 20-30 courses in your own areas of expertise (专门技能) and let other institutions do likewise. Professor Mike Sharples, FutureLearn's academic lead, goes further: “We've tied the elements available before into a package of courses offered by leading universities worldwide on a new software platform, with a new way of promoting it and also a new social-learning teaching method. You won't just receive an exam, but be able to discuss and mark each other's assignments.”

    Bath University, one of more than 20 universities working with FutureLearn, launches its first course, Inside Cancer, next January, and regards MOOCs as a way of breaking down age barriers. “There's no reason why someone doing GCSEs should not look at our MOOCs and get quite a way through them, or someone at PhD level and beyond,” says Professor Bernie Morley, expert for learning and teaching.

    My youngest son Jack has begun to learn the cello (大提琴). Every night, he carefully gets his cello out of its case and begins practising. I won't lie; It's not pretty. While he's getting better every day, he has a long way from becoming the next Yo-Yo Ma.

    This led me to wonder what Yo-Yo Ma was like the first time he played the cello. Of course, we now know him as one of the most excellent artists in the world, but I'm sure that when he first tried, he wasn't much better than my son. I'm not suggesting that Jack is going to take the classical music world by storm one day. But he's got to start somewhere.

    Michael Jordan wasn't born playing basketball, but I'm sure that he had to start somewhere. Warren Buffett wasn't born making great investment choices, but he had to start somewhere. J. K. Rowling wasn't born a writer, but he had to start somewhere. Bruce Springsteen wasn't born a songwriter and performer, but he had to start somewhere. Each of these individuals is now famous as being at the top of their occupation. But when they first started, their skills would have been disappointing and their potential unrealized. It has taken years of hard work to realize their undoubted talents. But they had to start somewhere.

    I don't know what my kids are going to do with their lives, but they have a great opportunity to explore a wide range of experiences before focusing on one or two things that they can be crazy about and good at. It's my job as dad to encourage them not to be put off by their bad first efforts. Because everyone has to start somewhere.

    Pink has never been one of the favorite colors of the fashion industry,as it's often seen as silly and not cool enough.But this spring,it's having its moment in the spotlight,all thanks to the fact that the color is no longer all about being girly and sweet.Instead,pink is taking on a new meaning of independence and power.

    This shift happened last month during the Women's March.Tens of thousands of women filled the streets of major cities in the US and in countries all around the world to protest（抗议）against the disrespect to women.What was unusual about the protests is that a lot of people taking part were wearing pink hats,making the streets appear like a "sea of pink".Even though the hats were without any slogan（标语）,their pink color is thought to have sent out a message that is louder than any words."We women have power and we're not going to sit down and shut up," Aileen Gildea,one of the protesters in the US,told The Boston Globe.

    Now young people are changing their attitudes to pink.They are no longer trying to escape pink,but give new meanings to it instead.

    "Women who came before us ...to be taken seriously they had to get away from the symbols used to make women seem less capable.Younger women don't have that reaction.They're more interested in breaking and rebuild those symbols,"Audrey Gelman,a businesswoman in the US,told The Wall Street Journal.

    So sometimes it's not the thing itself that needs to be changed,but the way we look at it.And in the case of pink, what used to be seen as silly may be turned into something really serious.

    Can you remember the first time you learned to ride a bike or drive a car? Learning these skills changed your life forever and opened up new horizons. Learning about computers can be like learning how to ride a bike or drive a car. Once you have invested the time to master the skills , you will never go back to the old days. The new technology is simply too convenient and too powerful.

    Technological developments through the years have enabled us to do more with less effort. We have continuously looked for better ways of doing things. Each invention and new development has allowed us to extend our capabilities. Today we see one of the most dramatic technologies ever developed—the computer. It extends the capabilities of our minds.

    Computers have saved organizations millions of dollars. Furthermore, these same computer systems have opened up new opportunities that would have gone undiscovered or neglected. The computer may multiply what we can do, and the return on investment is high. The growth of computer usage is surprising. On the other hand, the computer can do serious damage. Invasion of privacy(侵犯隐私), fraud(欺诈), and computer-related mistakes are just a few shocking examples.

    The computer is like a double-edged sword. It has the ability to cut us free from some activities, but it can also cut deep into profits, personal privacy, and our society in general. How it is used is not a function of technology. It is strictly a function of how people decide to use or misuse this new technology. The choice is yours, and only through a knowledge of computer systems will you be able to avoid the dangers while enjoying the many, many benefits of the computer age.

    A humpback, a kind of big whale, can weigh as much as 40 tons and reach 50 feet from nose to tail. That means they can easily overturn small boats and it can be a great trouble to anyone who jumps on the back of the animal.

    But that was just what Sam Synstelien did when he saw a humpback in trouble in Central California's Morro Bay. The animal was hopelessly tangled (缠绕) in a rope that was attached to a buoy (浮标).

    Synstelien, along with his partner Nicholas Taron, had already tried reporting the poor animal to the U. S. Coast Guard—but they were told it would be hours before rescuers could come. Hours, the fishermen thought, this whale didn't have. "If we wanted the humpback to survive we had to go to get it," Taron later said. "We thought there was no other choice for the whale; we decided to go for it. We were so excited then. I don't think we were that scared. "

    It's easy for Taron to say, of course. His role in the rescue was mostly in the cheering department. In the video, you can hear him shouting "Swim! Swim! Move! Just get it! Get it!" from the side of the boat while filming the entire rescue. "The humpback was just swimming in circles," Taron said. "You could tell it was stressed and being held to the bottom."

    The very agitated whale didn't take well to human intervention (介入) and even hit the boat with its huge tail with a lot of force. But Synstelien hung in there, and at last cut through the rope. And then with a sudden move, the humpback swam deep down beneath the waves. It wasn't much of a thank you, but Synstelien and Taron were happy.

    Social media (社交媒体)is one of the fastest-growing industries in today's world. A study conducted by the US think tank (智囊团) Pew Research Center showed that 92 percent of teenagers go online daily.

    The wide spread of social media has changed nearly all parts of teenagers' lives.

    ●Changing relationships

    High school student Elly Cooper from Illinois said social media often reduces face-to-face communication.

    "It makes in-person relationships harder because people give attention to their phones instead of their boyfriends or girlfriends," Cooper said.

    There's also a greater possibility of things getting lost in translation over social media.

    "If half of your relationship is over social media, you don't really know how the other person is reacting," Sienna Schulte, a junior student from Illinois, said.

    Yet, some people believe social media has made it easier to start relationships with anyone from anywhere. Beth Kaplan from Illinois met her long-distance friend through social media. He currently lives in Scotland, but they're still able to frequently communicate with one another.

    "I can feel close to someone that I'm talking to via (通过) FaceTime," Kaplan said.

    ●Wanting to be "liked"

    The rise of social media has changed the way teenagers see themselves.

    The 19-year-old Essena O'Neill announced on the social networking service Instagram that she was quitting social media because it made her obsessed (痴迷) with appearing perfect online.

    Negative comments also can do great damage to a teenager's self-esteem (自尊).

    In particular, anonymous (匿名的) social media apps such as Yik Yak may provide opportunities for cyberbullying (网络欺凌).

    The app allows users within 5 miles (8 km) to create and add comments to everything. Teenagers who get negative comments on these sites can't help but feel hurt.

    ●Opening new doors

    However, Armin Korsos, a student from Illinois, takes advantage of the comments he receives over social media to improve his videos on the social networking site YouTube.

    "Social media can help people show themselves and their talents to the world in a way that was never possible before," Korsos said.

    But Korsos recognizes that social media has become a distraction.

    "Social media, though it helps people connect with their friends and stay updated, is not all necessary."