Exposing living tissue to subfreezing temperatures for long can cause permanent damage. Microscopic ice crystals (结晶体) cut cells and seize moisture (潮气), making donor organs unsuitable for transplantation. Thus, organs can be made cold for only a few hours ahead of a procedure. But a set of lasting new antifreeze compounds (化合物)—similar to those found in particularly hardy (耐寒的) animals—could lengthen organs' shelf life.

    Scientists at the University of Warwick in England were inspired by proteins in some species of Arctic fish, wood frogs and other organisms that prevent blood from freezing, allowing them to flourish in extreme cold. Previous research had shown these natural antifreeze molecules (分子) could preserve rat hearts at -1.3 degrees Celsius for up to 24 hours. But these proteins are expensive to extract (提取) and highly poisonous to some species. “For a long time everyone assumed you had to make synthetic (人造的) alternatives that looked exactly like antifreeze proteins to solve this problem, ”says Matthew Gibson, a chemist at Warwick who co-authored the new research. “But we found that you can design new molecules that function like antifreeze proteins but do not necessarily look like them.”

    Most natural antifreeze molecules have a mixture of regions that either attract or repel water. Scientists do not know exactly how this process prevents ice crystal formation, but Gibson thinks it might throw water molecules into push-pull chaos that prevents them from tuning into ice. To copy this mechanism, he and his colleagues synthesized spiral-shaped molecules that were mostly water-repellent—but had iron atoms at their centers that made them hydrophilic, or water-loving. The resulting compounds were surprisingly effective at stopping ice crystals from forming. Some were also harmless to the roundworm Caenorhabditis elegans, indicating they might be safe for other animals.

    “These compounds are really cool because they are not proteins—they are other types of molecules that nonetheless can do at least part of what natural antifreeze proteins do, ”says Clara do Amaral, a biologist at Mount St. Joseph University, who was not involved in the research. Gibson's antifreeze compounds will still need to be tested in humans, however, and may be only part of a solution. “We don't have the whole picture yet,”do Amaral adds. “It's not just one magical compound that helps freeze-tolerant organisms survive. It's a whole suite of adaptations.

    Time wasters are real enemies of success. Time wasters could be people, events or habits that lead to the opposite path away from our goals. The most important starting point in removing the time wasters in life is to know about them. We need to sit down and analyze the activities which take our time.

    Start by making a list of our activities and sort out the neither urgent nor important ones. Sometimes it could be a simple addiction to a TV Soap Opera, constant distractions, or even one of our core （核心的）activities that we are not excellent at doing. We can, for instance, imagine that we are a business owner and we keep sabotaging our business deals, leading the company into great financial problems. It may be time for us to have our associates do the marketing while we concentrate on the areas we are best in. The next thing would be to make sure that we plan our daily activities. One of the obvious reasons is that we will have an upper hand in fighting against time wasters in our schedule. If what we want to do or what we don't want to do becomes clear, our focus is strengthened.

    Moreover, when we think of people we spend time with, we are sure to notice that some have a more positive impact on our success while others have a negative one. It is important to be able to distinguish them especially with regard to our schedule. While we do not advocate for everyone to throw away relationships, it is good to know that helping a friend who is emotionally disturbed can wait till dinner time. Finally, do the same to our habits. List all the habits and addictions that take any amount of our time. Then, take a little time to straighten them out in line with their importance and urgency.

    Depending on our analysis, kill those that are harmful to our goals in life.

    In the past five years, Instagram has taken off faster than anyone would have ever expected. It has become more than just a social media platform; it has become a community. With this community of over 800 million people, there are two distinct sides when it comes to diet culture and weight-loss programs. These two sides are body positivity and body manipulation(操纵）

    I have run a food and lifestyle blog/Instagram for over two years, and I have experienced both of these sides shown through Instagram. I have followed accounts (账户) that have been about strictly counting their calories, and have looked at other people carefully for their food habits

    On the other side of this, the only accounts that I'll follow now are people who support intuitive eating, never calorie counting, and make sure to remind people that their weight is the least interesting thing. They try to remind people that food is fuel, rather than something that will make them lose or gain weight. This side of

    Instagram is what helps people suffering from eating disorders, rather than fueling them.

    The rise of Instagram also led to the rise of what we called" Instagram models. These people have a lot of fans and a very pleasant page on Instagram. Basically, this isn't a bad thing. Humans are attracted to attractive people. Where this does go wrong is when weight-loss programs, weight-loss products, and other people supporting different types of diets get in touch with these people and offer them pay to get their message across.

    We also run into issues with how the public thinks of and admires these people for only their bodies. Not only is it bad for the self-respect of the people viewing the account, but also for the mental health of the person running the Instagram account.

    The people that promote these products are usually attractive, with what we would consider "the perfect body and the products are almost always diet related in some way, which makes consumers believe that in order to reach this ideal body they must use this product.

    On average, Americans spend about 10 hours a day in front of a computer or other electronic devices and less than 30 minutes a day outdoors. That is a claim made by David Strayer, a professor of psychology at the University of Utah. In his 2017 TED Talk, Strayer explained that all this time spent with technology is making our brains tired.

    Using an electronic device to answer emails, listen to the news and look at Facebook puts a lot of pressure on the front of the brain, which, Strayer explains , is important for critical (有判断力的)thinking , problem-solving and decision-making.

So, it is important to give the brain a rest. And being in naure, Strayer claims, helps get a tired brain away from too much technology. More than 15,000 campers from around the world attended an international camping festival in September. That is when friends and family take time off and escape to nature for several days. They take walks, climb, explore, swim, sleep, eat and play. Camping may be just what a tired brain needs.

    Take Carl for example .He lives in West Virginia and enjoys camping. He says that staying outdoors makes him feel at ease. It also prepares him for the work he must do. Kate Somers is another example who also lives in West Virginia. She says she enjoys camping with her husband and two children. She calls it a “regenerative” experience.

    At the University of Utah, David Strayer has studied both short-term and long-term exposure to nature. He found that spending short amounts of time in nature without technology does calm the brain and helps it to remember better. However, he found, it is the long-term contact with nature that does the most good. He and his research team found that spending three days in nature without any technology is enough time for the brain to fully relax and reset itself.

    After decades of cat-and-mouse between athletes and the word anti-doping agency (WADA), athletes found what they must have believed to be the ultimate (终极的) doping agent: their own blood. To enhance athletic performance with your own blood, you draw your blood and store it in a freezer. Your body compensates by creating more blood. Then, months later, just before a competition, you can re-inject (注射) the old blood for a boost. As the red-blood-cell count goes up, so does an athlete's ability to absorb oxygen. The more oxygen you get with each breath, the more energy your body is able to bum and the better you are able to perform.

    Although the enhancement is small compared to actual drugs, it can be the difference between a gold medal and a silver medal. Best of all, "extra blood" was never something WADA tested for.

    But WADA wasn't going to sit by and be fooled. What it came up with in response might be a solution to stop doping once and for all: an athlete biological passport (ABP). The idea is to record some biological features of an athlete through testing done at regular intervals. The biological passport's partial implementation (实施)—recording blood and steroid levels—began in January 2014.

    When all necessary biological features are finally combined, WADA will no longer need to worry about finding new methods to detect a drug. It will only have to detect (检测) resulting changes in the body. In the case of blood doping, if the athlete's normal red-blood-cell count is, say, 47%, but then is found to be 51% after a competition, cheating may have been involved.

    WADA is confident that the biological passport could even prevent genetic changes—the ultimate, ever-lasting enhancement—which are surely coming next. If an athlete inserts a performance enhancing gene, it will probably leave detectable changes in the body, that would differ from the athlete's feature in the biological passport.

    "No matter where you are or what time it is there's something going on at a Hard Rock Cafe. All over the world our cafes not only serve great food, but they serve up great music." Hard Rock Cafes around the world symbolize the timeless energy, originality and unifying (团结的) spirit that have helped to shape rock music over the last century.

    Founded by two Americans, the first Hard Rock Cafe (HRC) opened its doors to the public on June 14, 1971, in London. Today, HRC has become a global phenomenon with more than 180 cafes in different countries.

    HRC has also become the world's leading collector and exhibitor of rock ‘n' roll memorabilia. It all started when Eric Clapton, a regular at the first HRC, asked the staff if they could hang his guitar on the wall to mark his favourite stool (凳子) as "his spot". They did and one week later, a package from Pete Townshend arrived with a guitar and a note with the message, "Mine's as good as his! Love, Pete."

    Ever since then, Hard Rock Cafes have been collecting pieces of rock memorabilia and covering their walls with them. Their collection is rotated from restaurant to restaurant and provides the world's most comprehensive "visual history" of rock ‘n' roll. These treasures include an awe-inspiring collection of classic guitars and other instruments, posters, music, etc.

    Throughout its history, HRC has been governed by a special service philosophy: "Love All—Serve All." Since it was established, HRC has taken part in a wide variety of humane activities around the world. Following its idea of being more than just a restaurant, HRC tries to connect its business and its passion to make the earth a safer, healthier and better place to live.

    All in all, Hard Rock Cafe International is an entertainment company that continues to successfully expand the Hard Rock brand through countless music-related activities.