We know that hugs make us feel cosy inside. And this feeling could actually ward off stress and protect the  immune (免疫) system,  according to a new research from Carnegie Mellon University.

    It's a well-known fact that stress can weaken the immune system. In this study, the researchers sought to determine whether hugs could protect individuals from the increased sensitivity to illness brought on by the particular stress that comes with interpersonal conflict.

    “We know that people experiencing ongoing conflicts with others are less able to fight off cold viruses. We also know that people who report having social support are partly protected from the effects of stress on psychological states, such as depression and anxiety, ” the study's lead author, psychologist Dr. Sheldon Cohen , said in a statement. “We have tested whether awareness of social support is equally effective in protecting us from sensitivity to infection caused by stress and also whether receiving hugs might partially account for those feelings of support and thus protect a person against infection.”

    In the experiment, over 400 healthy adults filled out a questionnaire about their perceived (感知到的) social support and also participated in a nightly phone interview for two weeks. They were asked about the frequency that they engaged in interpersonal conflict and received hugs that day.

    Then, the researchers exposed the participants to a common cold virus, and monitored them to assess signs of infection. They found that both perceived social support and more frequent hugs reduced the risk of infection associated with experiencing interpersonal conflict. Regardless of whether or not they experienced social conflicts, infected participants with greater perceived social support and more frequent hugs had less severe illness symptoms.

    “This suggests that being hugged by a trusted person may act as an effective means of conveying support and that increasing the frequency of hugs might be an effective means of reducing the effects of stress,” Cohen said. “The apparent protective effect of hugs may result from the physical contact itself or hugging being a behavioral indicator of support and closeness. Either way, those who receive more hugs are somewhat more protected from infection.”

    If you need any more reason to wrap your arms around someone special, consider this: hugs also lower blood pressure, reduce fears, improve heart health and decrease feelings of loneliness.

    Too Good To Go, an app operating in the UK, allows users to order leftover food at a discount from restaurants, according to the website. The goal is to help cut food waste.

    Users simply log in, pick a restaurant, pay through the app and then pick up their food at a set time—usually around closing or after peak meal times. Orders through the app cost between 2 British pounds ($2.60) to 3.80 British pounds (about $5). Users aren't able to pick the food items, but they get an idea of the type of food that will be available, according to Business Green.

    Users also have the option to give meals to people in need by donating 1 British pound or more through the app. More than l, l00 meals have been donated so far.

    To ensure the entire experience is super eco-friendly. Too Good To Go provides recyclable takeout packaging to participating restaurants.

    Restaurants using the app make extra money by selling food what would otherwisehave been throw away. And Too Good To Go itself makes money by taking a fee from participating restaurants on each sale.

    Founded in Denmark last year. Too Good To Go launched this year in the UK and is expanding to other countries. The app is available in Brighton, Birmingham, Manchester and Leeds, and will be in London later this month.

    “Food waste just seems like one of the dumbest(愚蠢) problems we have in this world,” co-founder James Crummie told Business Green. “The restaurant industry is wasting about 600,000 tonnes of food each year, and in the UK alone there are one million people on emergency food parcels from food banks. Why do we have these two massive social issues that are completely connected, yet there is not much going on to address them?”

    Too Good To Go has already helped cut a significant amount of waste. So far, the app has saved 600 meals from landfills in the UK, reports Business Green.

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    Here are some of the smartest animals in the world.

Pigs

    Pigs are actually very smart animals. Pigs are one of the cleanest if they are given a choice. If you provide them with enough space, they will make sure they separate their dining area from their living space. Studies have also shown that they can actually be good at video games. To get food, they will follow other pigs and then steal it from right under their noses. The victimized(受害的)pigs will then come out wiser from this. They will change their behavior next time to prevent other pigs from stealing from them.

Crows

    They are smart and creative, with the highest IQ among all birds. Crows have been known to throw nuts and shells on a road so that cars will drive over and open them. They also have the ability to make knives to cut leaves and grass.

Elephants

    They have extremely large brains, even bigger than humans'. They bury(埋葬)their dead families and friends properly, the only other animal to do this besides humans. They also know which leaves are medicinal and will eat specific plants depending on the sickness they are feeling. They also have the ability to recognize themselves in the mirror.

Bottlenose Dolphins

    They actually have the ability to watch television on the their own because of their ability to process acoustic and visual(视觉和听觉)information at the same time. They can also recognize themselves in the mirror, which they use to inspect their own bodies. Their comprehension skills are very high. Studies have shown that they even have the ability to choose the “I don't know” option during difficult tests.

    On the morning of May 20, 1927, Charles A. Lindbergh Jr. took off from a muddy airfield in New York and headed for Paris. During the first fourteen hours of flying, he had had some anxious moments. Sleet had gathered on the wings of the plane and the fog was so thick that he could hardly see the tips of the wings. However, he had come across equally dangerous flying conditions before. Of course, now that he was over the ocean, his parachute（降落伞）was useless. He had only one choice: he had to go on.

    Although he had waited a long time to make this trip, he did not feel strange or nervous. He was accustomed to flying alone, and he had flown this route in his imagination many times. The idea of flying across the Atlantic had occurred to him one night when he had been carrying the mail between St. Louis and Chicago. That night, he told himself that a solo non-stop flight between New York and Paris was possible. He knew that airplanes capable of making the long flight over the ocean could be built. A man of skill and endurance could make his dream come true.

    As he was recalling that night, he reduced the altitude of the plane. Close to the surface of the ocean, he found that the ice on the wings began to melt and the fog disappeared. For the time being, at least, he was safe. The steady sound of the motor seemed like music in his ears. He had perfect confidence in his plane because he knew that there was not a more dependable plane than his. The Ryan Aircraft Company had constructed the plane to meet his special needs. He had worked with the chief engineer of the company, Donald Hall, to produce the airplane as rapidly as possible. Although Hall had worked with the basic design of the Ryan airplane, he had had to make many modifications. As a result, it was a very special airplane. He had named it “The Spirit of St. Louis,” in honour of the St. Louis businessmen whose financial backing had made the trip possible. Besides their money, he had invested all of his own savings, which came to two thousand dollars, in the venture.

    At 12:10 on the afternoon of May 21, Lindbergh caught sight of the coast of Ireland. Now that the flight was almost over, he began to relax a little. Finally, after thirty-four hours in the air without sleep, he arrived at Le Bourget Field, in Paris.

    It is generally acknowledged that young people from poorer socio-economic backgrounds tend to do fess well in the education system. In an attempt to help the children of poor families, a nationwide program called "Headstart" was started in the US in 1965. A lot of money was poured into it. It Look children into pre-school institutions at the age of three and was supposed to help them succeed in school. But the results have been disappointing because the program began too late. Many children who entered it at three were already behind their peers in language and intelligence and the parents were not involved in the process. At the end of each day, "Headstart" children returned to the same disadvantaged home environment.

    To improve the results, another program was started in Missouri that concentrated on parents as the child's first teachers. This program was based on research showing that working with the family is the most effective way of helping children get the best possible start in life. The four-year study included 380 families who were about to have their first child and represented different socio-economic status, age and family structure. The program involved trained educators visiting and working with the parent or parents and the child. The program also gave the parents some guidance, and useful skills on child development.

    At three, the children involved in the "Missouri" program were evaluated with the children selected from the same socio-economic backgrounds and family situations. The results were obvious. The children in the program were more advanced in language development, problem solving and other intellectual skills than their peers. They performed equally well regardless of socio-economic backgrounds or family structure. The one factor that was found to affect the child's development was the poor quality of parent-child interaction. That interaction was not necessarily bad in poorer families.

    The "Missouri" program compares quite distinctly with the "Headstart" program. Without a similar focus of parent education and on the vital importance of the first three years, some evidence indicates that it will not be enough to overcome education unfairness.

    A university in southwest China's Chongqing City set up a reading room as part of a campaign (活动) that stops students from taking their mobile phones with them in case the device distracts (使分心) them from concentrating on their studies.

    Reportedly a student named Hu Xiaopeng participating in the campaign studied 530 minutes without using his mobile phone. Unlike Hu, another one picked up his mobile phone in less than 20 minutes. "Having seen many students use their mobile phones in the library, a habit that shortens their study time and negatively impacts their learning, we decided to open this reading room," said Zhang Shuran, the person responsible for the project at the university.

    Zhang added that students can keep their phones in appointed bags with numbers on them. The hags are placed on a desk near the door of the reading room. "Staff members at the reading room will check the phones when there's a call," said Zhang, adding that they will inform students when their parents or teachers call them, but will not tell students if an unknown person is calling or when there is a text message. Based on the time students hand in their phones when they come to the reading room and the time they get them back when they leave the room, Hu Xiaopeng from College of Animal Science and Technology of the university set a record of the longest time.Hu spent 530 minutes studying without using his phone. Though feeling somewhat surprised, Hu said, "It's bad to keep mobile phone with you when you are reading or studying."

    The campaign has attracted nearly 200 students since it was launched a week ago. Some Internet users praised the campaign. One user named Liu Jingchang said, "It's good. I don't bring my phone when going to the library in case I get distracted."