A warm drink of milk before bed has long been the best choice for those wanting a good night's sleep. But now a study has found it really does help people nod off—if it is milked from a cow at night.

    Researchers have discovered that “night milk” contains more melatonin(褪黑激素), which has been proven to help people feel sleepy and reduce anxiety.

    The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night.

    Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.

    Night milk quickened the start of sleep and caused the mice to sleep longer.

    While the effect of cows milk harvested at different times has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.

    Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

    Milk is also sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening. The more fat you take in before bedtime, the greater burden you will put on your body at night.

The Diet Zone: A Dangerous Place

    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 of fatty, high-calorie, unhealthy foods. Diet products allow us to jump over the thinking stage and go straight for the scale instead. All we have to do is to swallow or recognize the word “diet” in food labels.

    On another level, diet products have greater psychological effects. Every time we have a zero-calorie drink,we are telling ourselves without our awareness 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 and struggle.

    The danger of diet products lees 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. Diet foods and diet pills contain zero calorie only because the diet industry has created chemicals to produce these wonder products. Diet products my not be nutritional,and the chemicals that go into diet products are potentially dangerous.

    Now that we are aware of 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.

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    There was a strange father, John Blake, from Michigan, who named his children after a computer software term. He told the local newspaper the US traditional way of adding “Junior” or “II” after a boy's name was too common. So, when his son was born last week, he decided on the name John Blake 2.0, as if he were a software programmer.

    Mr. Blake admitted that it took months to persuade his wife, Jamie, to accept the idea. Mrs. Blake said she asked several friends whether they could accept this name or not. “All the men,” she said, “felt the name was cool.” However，her women friends did not think so. “I think the women end up like it，”she said.

    Mr. Blake told the local newspaper he got the idea from a film called The Legend of 1900，in which an abandoned baby is given the name 1900 to remember the year of its birth. “I thought that if they can do it , why can't we?” he said. After little John version 2.0 was born, Mr. Blake even sent a celebratory e-mail to the family and friends, which was designed to look as if he and his wife had created a new software. “I wrote things like there are a lot of new features from Version 1.0 with additional features from Jamie,” he said. And he has already planned for his son's future. “If he has a child, he could name it 3.0,” he said.

The Basics of Math—Made Clear

    Basic Math introduces students to the basic concepts of mathematics, as well as the fundamentals of more tricky areas. These 30 fantastic lectures are designed to provide students with an understanding of arithmetic and to prepare them for Algebra(代数) and beyond.

    The lessons in Basic Math cover every basic aspect of arithmetic. They also look into exponents(指数), the order of operations, and square roots. In addition to learning how to perform various mathematical operations, students discover why these operations work, how a particular mathematical topic relates to other branches of mathematics, and how these operations can be used practically.

    Basic Math starts from the relatively easier concepts and gradually moves on to the more troublesome ones, so as to allow for steady and sure understanding of the material by students. The lectures offer students the chance to “make sense” of mathematical knowledge that may have seemed so frightening. They also help students prepare for college mathematics and overcome their anxiety about this amazing—and completely understandable—field of study.

    By the conclusion of the course, students will have improved their understanding of basic math. They will be able to clear away the mystery(神秘性) of mathematics and face their studies with more confidence than they ever imagined. In addition, they will strengthen their ability to accept new and exciting mathematical challenges.

    Professor H. Siegel, honored by Kentucky Educational Television as “the best math teacher in America,” is a devoted teacher and has a gift for explaining mathematical concepts in ways that make them seem clear and obvious. From the basic concrete ideas to the more abstract problems, he is master in making math lectures learner-friendlier and less scary.

    With a PhD in Mathematics Education from Georgia State University, Dr. Siegel teaches mathematics at Central Arizona College. His courses include various make-up classes and a number of lectures for future primary school teachers.

    If the course fails to provide complete satisfaction to you, you can easily exchange it for any other course that we offer. Or you can get your money back.

    As any plane passenger will confirm, a crying baby is almost impossible to ignore, no matter how hard you try. Now scientists believe they may have worked out why. A baby's cry pulls at the heartstrings（扣人心弦）in a way while other cries don't, researchers found.

    Researchers found that a baby's cry can trigger unique emotional responses in the brain, making it impossible for us to ignore them—whether we are parents or not. Other types of cries, including calls of animals in great pain, fail to get the same response, suggesting the brain is programmed to respond specifically to a baby's cry.

A team of Oxford University scientists scanned the brains of 28 men and women as they listened to a variety of calls and cries. After 100 milliseconds — roughly the time it takes to blink (眨眼) —two parts of the brain that respond to emotion lit up. Their response to a baby's cry was particularly strong. The response was seen in both men and women—even if they had no children.

    Researcher Dr Christine Parsons said, “You might read that men should just notice a baby and step over it and not see it, but it's not true. There is a special processing in men and women, which makes sense from an evolutionary(演化的）view that both men and women would be responding to these cries.” The study was in people who were not parents, yet they are all responding at 100ms to these particular cries, so this might be a fundamental response present in all of us regardless of parental status.

    Fellow researcher Katie Young said it may take a bit longer for someone to recognize their own child's cries because they need to do more “fine-grained analysis”. The team had previously found that our reactions speed up when we hear a baby crying. Adults performed better on computer games when they heard the sound of a baby crying than after they heard recordings of adults crying.

    Are you interested in travelling? Here are famous national parks where travellers mostly like to go in America.

    ⒈Great Smoky Mountains National Park

    Visitors: 11,388,893

    The name "Great Smoky Mountains" comes from the fog over this mountain range situated along the North Carolina-Tennessee border. Established in 1934, it is not just home to a diverse ecosystem of plants and animals, but also home to rich Appalachian cultures. Visitors there can see over 100 waterfalls, go boating on Fontana Lake and hike the Appalachian Trail. It's also an excellent vantage point to see the leaves change in the fall.

    ⒉Grand Canyon National Park

    Visitors: 6,254,238

    The Grand Canyon is the result of over 70 million years of geological events creating the Colorado Plateau, glaciers and valleys, while the Colorado River carved its way through the valleys. It is truly a natural splendor!

    When President Roosevelt first visited it in 1903, he said, "The Grand Canyon fills me with awe. It is beyond comparison – beyond description."16 years later, it was signed by President Woodrow Wilson, officially viewing the Grand Canyon a national park.

    ⒊Yosemite National Park

    Visitors: 4,336,890

    In addition to being a national park, Yosemite is designated as a World Heritage Site. Yosemite National Park is in Central California in the western Sierra Nevada. Though it covers around 1,168 square miles of area, visitors spend most of their time in the 5.9 square-mile area of the Yosemite Valley where there are some most famous sites like Yosemite Falls, and Cook's Meadow Loop.

    ⒋Zion National Park

    Visitors: 4,504,812

    Settled in Southwestern Utah is Zion National Park. It has some of the most unique landscapes packed with mountains, valleys, rivers, desert and forests.

    Zion National Park is also an important place to study ancient humans who made the area their home about 8,000 years ago. Some of the park's most notable attractions include Angel's Landing, Kolob Arch, the Narrows, etc.