In summer, millions of people will head for the beach．And while the ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity．

    “Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”

    Scientists are working on using that energy to make electricity．Most waves are created when winds blow across the ocean．“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ” Taylor said．“Waves are one of nature's ways of picking up energy and then sending it off on a journey．”

    When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) ．The turbine can then power an electrical generator (发电机) ．

    The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．

    The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．

    Oceans cover three quarters of the earth's surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．

    Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．

    With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”

    In the future, when you turn on a light switch, an ocean wave could be providing the electricity!

    When my sister Gina was born, she had a problem with her heart. Her heart was pretty bad in the beginning and she stayed in the hospital for a month. The first few years were very difficult because she was very sick. She had five operations before she was three years old. She had trouble walking, playing with other children, and going to school.

    Although Gina couldn't laugh and talk, we all knew that she just needed love and care. Our parents wanted to take Gina to a special place in Florida where she could swim with dolphins. Gina was afraid of swimming with them because she had never been around dolphins before. We had also never traveled that far as a family.

    When we got to Florida, we saw where the dolphins lived. It was a place where kids with special needs like Gina could come and spend time. I thought it was going to be a vacation, but it wasn't. Gina had to work hard every day for a week.

    The trip was amazing .Gina laughed and clapped(拍手) when she saw the dolphin, and the dolphin splashed (溅起水花) when it saw Gina. They swam together all day. Gina was able to move her body more than she normally did at home. Mom and dad were proud of Gina. I was, too.

    What happened to that brilliant idea that you once had? Did you ignore it because you thought that it was just a little thought? Have you ever considered what that little thought would have become if you had acted on your instincts(本能) or if you had paid more attention to it?

    Imagine a scene, where you are sitting at home watching television or reading a book, suddenly a light bulb is turned on in the dark tunnel of your mind as a thought or an idea crosses your mind. The thought catches your attention but seems so meaningless and you are tempted to abandon it, but wait a minute!

    That thought could be the potential beginning of the success you have so much wished for. As the thought crosses your mind, your senses become alert and you suddenly see a possibility, a solution, or find the answer to a problem whose solution has long escaped you.

    It is almost as if a wise man has whispered the perfect solution into your ear or awakened your senses to a reality, thereby bringing light to your life. It is like finding the last piece of jigsaw puzzle(拼图游戏). This becomes an amazing moment and everything freezes around you as you excitedly try to grasp the practicality of that little but powerful thought.

    Your self-confidence and enthusiasm increase as you become conscious of the great possibilities that can arise if that little thought is acted upon. This becomes the moment to build upon that thought and to put down any ideas that are streaming from that little thought for later review.

    Seemingly meaningless little thoughts or ideas when acted upon have a potential to explode into great projects.

    Many successful projects have been born from the little positive thoughts that were carefully protected and recognized as tickets to great things.

You may have heard people say many times that it just came to me in a flash moment, a small idea or seemingly meaningless thought may cross your mind about something you have been planning to accomplish.

    Don't waste an opportunity to act on a potentially brilliant idea. You don't have to wait for a major idea, or approval from your peers in order for you to act on that little thought. That little thought or idea is the beginning of great things if you decide to follow it through.

    Let's face it. No one drinks diet sodas for the taste. People drink diet sodas in the hope that it will help them lose weight or at least keep them from gaining it. Yet it seems to have exactly the opposite effect, according to a new study.

    Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn't drink diet sodas. ＂What we saw was that the more diet sodas a person drank, the more weight they were likely to gain,＂ said Sharon Fowler.

The study was based on data from 474 participants in a large, ongoing research project, where the participants were followed for nearly 10 years.

    While the findings are surprising, they also offer some explanations.

    Nutrition expert, Melanie Rogers, who works with overweight patients in New York, has found that when patients are switched from regular to diet sodas, they don't lose weight at all. ＂We weren't seeing weight loss necessarily, and that was confusing to us,＂ said Rogers.

    So why would diet soda cause weight gain? No one knows for sure yet, but it could be that people think they can eat more if they drink diet sodas, and so over-compensate for the missing calories.

    A related study found some sweeteners (甜味剂) raised blood sugar levels in some mice. ＂Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky,＂ said Helen P. Hazuda, professor at the University of Texas's school of medicine. ＂They may be free of calories, but not of consequences.＂

    Google, one of the world's outstanding tech companies, was attacked. It wasn't its search engine that was attacked or its advertising platform or even its social network. Google⁺. Instead, it was a building.

    Two web security experts hacked (侵入) into its Wharf 7 office in Sydney, Australia, through Google's building management system (BMS). One of them, Billy Rios, says, “My colleague and I have lot of experience in web security, but it is not something that people couldn't learn. Once you understand how the system works, it is very simple.

    They found the system on Shodan, a search engine that lists devices connected to the Internet, and then ran it through their own software to identify who owned the building. In the case of the Google hacking, the researchers had no immoral purpose and just informed Google about what they found.

    According to Mr Rios, who runs security company Whitescope, there are 50, 000 buildings currently connected to the Internet, including research institutes, churches and hospitals, and 2, 000 of those are online with password protection, Martyn Thomas, a professor of IT at Gresham College in the UK, says, “It is beyond doubt that attempts to attack building management systems are happening all the time.”

    Making a building smart generally means connecting the systems that control heating, lighting and security to the Internet and the wider corporate network. There was a strong reason for doing this, said Andrew Kelly, principal security consultant at defence company Qinetiq.

    “Energy savings are the biggest factor in connecting building management systems to the corporate network,” he says. “It gives those who run the building better control and offers between 20% to 50% in energy savings,” he adds.

    But it also makes them less secure. And if any of these feels like a Hollywood filmy, think again.

     Books at Amazon :Best sellers of the month—Feb, 2018

    Freshwater by Akwaeke Emezi—February 6, 2018

    Hardcover :$15.91Audio CD :$29.99

    An extraordinary novel. Freshwater explores the amazing experience of having another self. It centers around a young Nigerian woman, Ada, who develops separate selves within her as a result of being born “with one foot on the other side.” Freshwater is a sharp call of a rare way of experiencing the world, one that shows how we all construct our identities.

    Milk and Honey by Rupi Kaur—February 16 , 2018

    Hardcover: $ 18. 00 Paperback: $ 8.99 Audio CD :$8.99

    A collection of poetry and prose (散文)about survival. About the experience of violence, abuse(虐待), love , loss, and femininity (女性). It is split into four chapters ，and each chapter serves a different purpose. Deals with a different pain. Heals a different heartache. Milk and Honey takes readers through a journey of the most bitter moments in life and finds sweetness in them because there is sweetness everywhere;if you are just willing to look.
     Educated by Tara Westover—February 13, 2018

    Hardcover: $ 16.80 Paperback: $ 28.00 Audio book: $6.00 Audio CD :$8.99

    An unforgettable biography about a young girl who, kept out of school, leaves her survivalist family and goes on to earn a PhD from Cambridge University. Educated is an account of the struggle for self-invention. It is a tale of fierce family loyalty, and of the sadness that comes from severing one's closest ties.

    Force of Nature by Jane Harper—February 20, 2018

    Hardcover: $17.10 Paperback: $ 23.41 Audio book:Free Audio CD :$ 34. 15

    An attractive novel from the author of the Sunday Times top 10 best seller. Five women go on a hike. Only four return. When five colleagues are forced to go on a corporate retreat in the wilderness , they reluctantly pick up their backpacks and start walking down the muddy path. But one of the women doesn't come out of the woods. And each of her companions tells a slightly different story about what happened.