Diet Coke, diet Pepsi, diet pills, no-fat diet, vegetable diet… We are surrounded by the word “diet” everywhere we look and listen. We have so easily been attracted by the promise and potential of diet products that we have stopped thinking about what diet products are doing to us. We are paying for products that harm us psychologically and physically.

    Diet products significantly weaken us psychologically. On one level, we are not allowing our brain to admit that our weight problems lie not in actually losing the weight, but in controlling the consumption（摄入） of fatty, high-calorie, unhealthy foods. Diet products allow us to jump over the thinking stage and go straight for the scale（秤）instead. All we have to do is to swallow or recognize the word “diet” in food labels(标签).

    On another level, diet products have greater psychological effects. Every time we have a zero-calorie drink, we are telling ourselves without knowing that we don't have to work to get results. Diet products make people believe that gain comes without pain, and that life can be without resistance（抵制and struggle.

    The danger of diet products lies not only in the psychological effects they have on us, but also in the physical harm that they cause. Diet foods can indirectly harm our bodies because consuming them instead of healthy foods means we are preventing our bodies from having basic nutrients(营养成分). Diet foods and diet pills contain zero calorie only because the diet industry has created chemicals to produce these wonder products. Diet products may not be nutritional, and the chemical that go into diet products are potentially dangerous.

    Now that we know the effects that diet products have on us, it is time to seriously think about buying them. Losing weight lies in the power of minds, not in the power of chemicals. Once we realize this, we will be much better able to resist diet products, and therefore prevent the psychological harm that comes from using them.

    Jumping off random cliffs(悬崖) into the sea is not clever. However, as a sport, coasteering uses local experts to help groups travel around the coast so they can then jump safely and have a lot of fun in the process. But coasteering is also so much more than cliff jumping.

    A usual day's coasteering will involve swimming, climbing, scrambling(攀岩) and cliff jumping. All trips begin with a safety brief and equipment check. You will be equipped with a helmet, wetsuit and life vest. You will need to wear some old sneakers you don't mind getting wet.

    From here it could be a short swim to the first jump site. Following an instructor, you swim through rock pools, around rough rocks and right up to the next jump spot. A brief climb and you'll be standing on the edge wondering, “Why the hell did I agree to this?” Then, and to the yell of your friends, you're leaping in, with a smile that's guaranteed to last the rest of the day.

    Coasteering is certainly more than cliff jumping. If ever a sport could claim to be confidence building, this is it. And it's also a perfect activity for groups of friends or for adventurous families who want to explore the coast. Many companies offer daily trips, so even if you are on your own or a couple you can join in with a large group. Companies use trained guides with much knowledge of local tides and weather conditions. These people lead the show and are qualified lifesavers as well.

    Coasteering is already popular around the UK. At least now you won't have to ask “What is coasteering?” if someone you know gives it a go.

    Big Messaging Apps Abroad

    While WeChat is China's biggest mobile messaging app, there are many similar apps in other countries that offer similar features.

    WhatsApp (US)

    Users: more than 300 million

    Platforms: Android, iOS, Windows Phone, BlackBerry

    Features: Text chat, push-to-talk, file sharing, location sharing

    With more than 300 million active users, WhatsApp is one of We Chat's biggest competitors.

    Developed by two ex-Yahoo employees in 2009, WhatsApp originally focused on text chat, but on Aug. 6 it also started push - to - talk service. It's noted for its accessibility, ease of use and the absence of advertisements. The service is free for the first year, after which $ 0.99 (6. 06 yuan) is charged for a one –year subscription.

    Kakao Talk (South Korea)

    Users: more than 100 million

    Platform: Android, iOS, windows Phone, BlackBerry and Bada (an operate system developed by Samsung)

    Features: Text chat, group chat, push–to–talk, group calls, file sharing

    With more than 100 million users in more than 230 countries, Kakao Talk is a multi - platform (多平台) texting application that allows users to send and receive messages for tree. With Kakao Talk, users can message each other one-on-one or in group chats with unlimited numbers of friends. You can also choose from more than 250 animated emoticons and share them with friends.

    Line (Japan)

    Users: more than 200 million

    Platforms: Android, iOS, Windows Phone, BlackBerry and PC

    Features: Text chat, group chat, push–to–talk, file sharing, location sharing, gaming, stickers

    Line tops the list of the most downloaded free apps in 52 countries. Apart from text and voice messaging, Line provides its users with more than 250 original stickers and emoticons to buy from its own shop. In the first quarter of 2013 alone, it made $ 17 million just from stickers. The popular app also allows friends to battle each other in the Line games.

    If plastic had been invented when the Pilgrims sailed from Plymouth, England, to North America-and their Mayflower had been stocked with bottled water and plastic- wrapped snacks, their plastic waste would likely still be around four centuries later. Atlantic waves and sunlight would have worn all that plastic into tiny bits. And those bits might still be floating around the world's oceans today, waiting to be eaten by some fish or oyster, and finally perhaps by one of us.

    Because plastic wasn't invented until the late 19th century, and its production only really took off around 1950, we have a mere 9.2 billion tons of the stuff to deal with. Of that, more than 6.9 billion tons have become waste. And of that waste, a surprising 6.3 billion tons never made it to a recycling bin-the figure that shocked the scientists who published the numbers in 2017.

    No one knows how much unrecycled plastic waste ends up in the ocean, the earth's last sink. In 2015, Jenna Jam beck a University of Georgia engineering professor, caught everyone's attention with a rough estimate between 5.3 million and 14 million tons of plastic waste each year just come from coastal regions.

    Meanwhile, ocean plastic is estimated to kill millions of marine(海洋的）animals every year. Nearly 700 species, including endangered ones, are known to have been affected by it. Some are harmed visibly, stuck by abandoned things made of plastic. Many more are probably harmed invisibly. Marine species of all sizes, from zooplankton to whales, now eat microplas-tics, the bits smaller than one-fifth of an inch across.

    "This isn't a problem where we don't know what the solution is, "says Ted Siegler, a Vermont resource economist who has spent more than 25 years working with developing nations on garbage." We know how to pick up garbage. Anyone can do it. We know how to deal with it. We know how to recycle. "It's a matter of building the necessary institutions and systems, he says, ideally before the ocean turns into a thin soup of plastic.

    A new study has found that social media could be affecting the sleep of young adults.

    The study is a project of researchers at the University of Pittsburgh's School of Medicine. They found that young people who often use social media are more likely to suffer from sleep disorders than those who use social media less. The researchers say doctors should ask young adults about their use of social media when treating sleep issues.

    "This is one of the first pieces of evidence that social media use really can influence your sleep." said Jessica C Levenson. She was the lead author of a report on the study.

    The researchers set out to examine the connection between social media use and sleep among young adults. Levenson noted that these young adults are possibly the first "generation to grow up with social media."

    The researchers wanted to find out how often young people used social media sites like Facebook, Twitter, Credit and Tumbler. For the study, they gave questionnaires to nearly 1,800 adults, aged 19 to 32. On average, members of the study group used social media sites one hour a day. They also "visited various social media 30 times per week."

    Thirty percent of the study's participants reported having serious problems with sleeping. Those people who used social media a lot were three times more likely to have a sleep disorder. And those who spent the most time on social media were two times as likely to suffer from sleep disturbances.

    Levenson said the number of times a person visits social media is a better predictor of sleep problems than overall time spent on social media. If this is true, she adds, then practices that stop such behaviors may be the most effective.

    There have been many problems with our schools today, the biggest of which is closely related to our culture. In general, our culture, as represented in the media, gets excited by famous stars, and constantly stresses that it's what you have, not what you are, that counts. Parents are encouraged to be away from even very small children for most of the day. Too many voters go for politicians who would rather cut school funding than to get rid of tax cuts for the wealthy. All contribute greatly to the problems of educating our children.

    Today's teachers have to deal with a culture that is vastly different than in the past. They report that there is, among more children than ever, a lack of motivation, no drive to succeed or even try. The role models that boys view in the media mostly consist of men in comedies and other shows who are rude and often extremely immature; self-centered overpaid athletes; men in movies, television dramas, video games, etc. who are preoccupied with violence and power. As Leonard Sax wrote in "Boys Adrift", "Teenage boys are looking for models of mature adulthood, but we no longer make any collective effort to provide such models." Girls are attacked not only with such annoying images of males, but also with women who are preoccupied with appearance and are extremely materialistic.

    In such a cultural environment, it is more important than ever to have responsible, loving and caring parents who have enough time and motivation to devote to their children and see to it as their duty to model for them and raise them with high standards of honesty and responsibility along with tending to their physical needs. They need to care enough to see that their children are not attacked with the garbage that comes from movie, television and computer screens. In today's culture, they are basically alone in this effort since, unfortunately, so much is working against them.

    Until we, as a culture, face the truth about ourselves — that we are not providing adequately for a great many of our children — the storm will continue to rage over our education system.