Do you often feel lonely? What do you do when you feel that way? Hide yourself away and spend your time reading, watching TV or walking around?

You might think that feeling lonely is just like feeling happy, sad or scared — that it's just one of your various moods. That is true. However, if you let yourself be lonely for too long without dealing with it, you could be making a serious mistake.

    Doctors have known for some time that feeling lonely is bad for the mind. It can lead to mental health problems such as depression, stress and reduce confidence. “Being lonely means not feeling connected or cared for, but it's not about being mentally alone,” Lisa Jaremka, scientist from Ohio State University, US, told Live Science in January. And there's growing evidence that not having friends is connected with physical illness as well.

    In 2006, for example, scientists studied 2,800 women who had cancer. They found that those who had few friends or family were five times more likely to die of their disease than women with many social contacts. Also, even healthy people had a better chance of falling ill if they felt left out by others, according to the BBC.

    The results have scientists thinking that loneliness might hurt the immune system(免疫系统), which protects the body from diseases.

    Hoping to prove this theory, Jaremka and her research team put volunteers(志愿者) through a stress test. During the test, volunteers were asked to make an unprepared speech in front of a group of stony-faced people. The researchers found that volunteers who said they were lonely in their daily lives felt more stress during the test. And their blood samples showed that all the stress had managed to cause harmful changes to their immune system.

     “Loneliness has been thought of in many ways as a chronic stressor(慢性增压器) — a socially painful situation that can last for quite a long time, ” explained Jaremka, who led the study.

    The number of people suffering from loneliness is increasing all over the world. However, solving the problem is easier said than done. It won't work to just “tell anyone to go out and find someone to love you”, said Jaremka. “We need to create support networks.”

    Exciting screams of joy from two happy little girls rang across the beach. But I walked along, ignoring them. I'd come to this faraway beach on my sailboat, a place to escape. My marriage was in trouble. I worried about the harm to my two boys. But I didn't know how to make things better.

    “Help! Help!” The girls screamed. I saw one girl was at the edge of the surf, yelling. I charged into the waves, swam to her and seized her. “But where is the other girl?” I looked across the water and saw a small head after a big wave. I shifted the girl Td rescued to my back. She told me the other girl was her sister. For a moment I thought of my boys. How much they loved each other. How much I loved them.

    I quickened my swimming and held the second little girl. We were at least 50 yards from land. I couldn't swim that far with two girls hanging on to me. But there was no time to wait. I swam as hard as I could, but the weight of the girls grew heavier with every minute. My lungs burned. I opened my mouth to take a breath, but instead swallowed water. I couldn't breathe. From behind me I felt an unbelievable force, lifting.

    “Mommy!” The cry drew my attention. I looked up. An elderly man was trying to drag me out of the water. Two women were swimming toward shore. “Thank you,” one of the woman cried. “You saved my daughters.” My efforts and my struggles had paid off. I thought of that big wave, lifting me and pushing me. When my body had failed me, and when all hope was disappearing, I was given the strength I needed.

    I stoop up. My family were waiting for me. There were things I could do. I just needed to make an effort. The strength would be given to me.

    Parallel worlds exist and interact with our world, say physicists.

    Quantum mechanics (量子力学), though firmly tested, is so weird and anti-intuitive that physicist Richard Feynman once remarked, “I think I can safely say nobody understands quantum mechanics.” Attempts to explain some of the bizarre (奇异的) consequences of quantum theory have led to some mind-bending ideas, such as the Copenhagen interpretation and the many-worlds interpretation.

    Now there's a new theory on the block, called the “many interacting worlds” hypothesis (假设) (MIW), and the idea is just as profound as it sounds. The theory suggests not only parallel worlds exist, but that they interact with our world on the quantum level and are thus detectable. Though still speculative (推测的), the theory may help to finally explain some of the bizarre consequences inherent in quantum mechanics.

    The theory is a spinoff of the many-worlds interpretation in quantum mechanics—an assumption that all possible alternative histories and futures are real, each representing an actual, though parallel, world. One problem with the many-worlds interpretation, however, has been that it is fundamentally untestable, since observations can only be made in our world. Happenings in these proposed “parallel” worlds can thus only be imagined.

    MIW, however, says otherwise. It suggests that parallel worlds can interact on the quantum level, and in fact that they do.

    “The idea of parallel universes in quantum mechanics has been around since 1957,” explained Howard Wiseman, a physicist at Griffith University in Brisbane, Australia, and one of the physicists to come up with MIW. “In the well-known 'Many-Worlds Interpretation', each universe branches into a bunch of new universes every time a quantum measurement is made. All possibilities are therefore realized — in some universes the dinosaur-killing asteroid (小行星) missed Earth. In others, Australia was colonized by the Portuguese.”

    “But critics question the reality of these other universes, since they do not influence our universe at all,” he added. “On this score, our 'Many Interacting Worlds' approach is completely different, as its name implies.”

    Wiseman and colleagues have proposed that there exists “a universal force of repulsion between 'nearby'(i.e. similar) worlds, which tends to make them more dissimilar.” Quantum effects can be explained by factoring in this force, they propose.

    When asked about whether their theory might imply that humans could someday interact with other worlds, Wiseman said: “It's not part of our theory. But the idea of human interactions with other universes is no longer pure fantasy.”

    What might your life look like if you made different choices? Maybe one day you'll be able to look into one of these alternative worlds and find out.

    We work with Cambridge County Council's Participation Team to create opportunities for young people to visit the University and learn more about it. The following events are scheduled for the 2019/2020 academic year.

    SuperStar workshops

    12 workshops are planned for young people aged 7 to 11. These half-day visits will be held throughout the year, at times when young people are not at school. If participants complete 8 of the 12 workshops, they will be awarded the nationally recognized SuperStar Crest Award.

    Please note, workshops will only run if we have a sufficient number of attendees (usually around 3+ participants).

    Explore University Days

    Explore University Days are for young people aged 12-15. Participants visit the University for two days and take part in a variety of university-related workshops, and other fun activities.

    Previous participants have joined in the following:

    • Visited the Sports Centre

    • Took part in a Neuroscience workshop

    • Enjoyed a two-course meal at a University College

    Dates will be confirmed in early December 2019, and a schedule for event will follow in the New Year.

    Events for post-16 students

    If you are studying for your post-16 qualifications and are considering applying for Cambridge or would like to find out more about a specific subject, the following events might be for you:

    • University and College Open Days

    • Subject Masterclasses

    • Cambridge Science Festival

    When to go: The Magic Kingdom, which was opened in 1971, was the first theme park at Walt Disney World. All Disney World theme parks are opened 365 days a year, although opening and closing time for each park changes from day to day. If you plan to make a trip to the Magic Kingdom without kids, try to visit on a school day to avoid the largest crowds. If you need to visit during a school vacation, try at least to avoid the week between Christmas and New Year's Day and the fourth of July.

    If you are not staying at a Disney World hotel, avoid visiting the Magic Kingdom on its Extra Magic Hours days, as Disney's hotel guests get into the park early on those days, and visitors who arrive at the Magic Kingdom's normal opening time have to wait for a long time.

    Before you go：Buy your Walt Disney World tickets online at Disney World's website. For advice on picking the right ticket, see our guide to Disney World tickets.

    You will also need to call in advance to make lunch or dinner reservations. Disney accepts reservations(预订)up to 180 days in advance, but you need to contact 1-407-WDW-DINE.

    When you get there: Plan to arrive at the Magic Kingdom's front gate before the park opens in the morning. Keep in mind that to reach the Magic Kingdom, you must park at Disney World's Transportation and Ticket Centre parking lot, ride a tram (有轨电车)to the TTC, then take a ferry boat across the Seven Seas Lagoon to the Magic Kingdom. It makes a fantastic approach, but takes extra time. Give yourself an extra hour in the summer and half an hour during the school year.

One teacher had two students. One of them had a positive vision while the other had the 1 one.

One day, the teacher 2 for a park with both the students and while wandering in the garden, they 3 a mango tree from which some ripe and juicy mangoes were 4 . On seeing this, the teacher thought to 5 both of his students. Then, he asked the first one, "My dear child, what do you think of this mango tree?"

The student answered instantly, "Teacher, in spite of people 6 this tree with stones, it gives us sweet and juicy mangoes. It does 7 but still it gives us fruits. I wish all human beings learn this important 8 from the mango tree-to share their 9 even if they have to suffer for this."

After that, the teacher asked the other student the same question. The student 10 answered, "Teacher, this mango tree is no good and will not give mangoes by itself but only when we hit it with stones and 11 . Therefore, we should hit it hard to get sweet mangoes from it. That is the only way to 12 these mangoes. It is also clear from this tree that in order to get good 13 from others, we need to be violent and only when we become violent, then and only then will we get 14 ."

The teacher was delighted with the answer given by the first student because he had an admirable vision and 15 the tree with positive vision.