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    How often do you check your phone? According to a study led by Nottingham Trent University in Britain, the average person looks at their phones 86 times a day. Updating their status on social media platforms also made people reach for their electronic companion frequently.

    Even the participants thought that was a lot: this figure is twice as often as they thought they did. Our phones might be shaping our behavior more than we realize. Do you actually look at your surroundings more than at your phone? Is it rude to check your phone when someone is talking to you?

    Sherry Turkle interviewed hundreds of college students about this. She's a professor of social studies at the Massachusetts Institute of Technology. They talked about something they called "the rule of three".

    The rule has to do with being considerate to others despite the allure (诱惑力) of the little flat box. Turkle explains: "If you go to dinner with friends, you don't want to look down at your phone until you see that three people are looking up in the conversation. So there's a new rule where you don't look down unless three people are looking up in order to keep a little conversation alive."

    Actually, if you are clever enough you might use your phone as a tool to connect with people next to you. Sharing a bit of your life with them can bring you closer together. And you can also invite everyone to take a selfie (自拍照) with you.

    But the best thing to deal with mobile phone addiction is to go cold turkey and leave the machine behind occasionally or just switch it off and keep it firmly in your pocket for a while.

    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（打瞌睡）—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（焦虑）.The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder（奶粉） 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 cow milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who have trouble falling asleep at night.

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

It's almost camp season!

    Summer is wonderful. Summer at one of the following awesome camps? Even more wonderful.

Tahosa High Adventure Base

    Location: Ward, Colorado

    People puzzle: Tahosa's ropes courses are some of the nation's best. Use your hands, feet and brains to take up high-flying challenges and overcome your fears. Fly fishing at 9,000 feet? Yes. Fishing licenses or experience needed? No, sir!

    Choose your adventure: Go all-inclusive, where the staff prepares meals and runs the program, or take control and plan your perfect week. The choice is yours.

Camp Raymond

    Location: Parks, Arizona

    Don't look down: When looking up at the stars, light pollution is your enemy. But Camp Raymond's location and elevation (海拔) of 6,700 feet offer perfect conditions for seeing otherwise invisible stars.

    That's cool: Don't forget your camera and a jacket. During the day, you could spot bears and deer. At night, temperatures can fall sharply. Hot cocoa at summer camp? Cool.

Pamlico Sea Base

    Location: Blounts Creek, North Carolina.

    Go coastal: Explore the Carolina coast by boat. You choose the route, and Pamlico provides the equipment. Keep an eye out for wild horses, lighthouses and boatloads of fish.

    Set sail: Even if you don't know the difference between starboard and star-lord, Pamlico's sailing journey will make you a first-rate sailor in no time. You'll even practice finding your way using the stars.

Base Camp

    Location: St. Paul, Minnesota

    Big upgrade: What happens when you change a 1907 cavalry drill hall (骑兵训练场) into an adventure destination in the heart of the city? You get Base Camp for overnight lock-ins, weekend retreats (隐居处) and summer camp.

    Inside out: Most of Base Camp is indoors, meaning the activities like climbing walls can be undertaken on winter's coldest days.

    In the famous fairy tale, Snow White eats the Queen's apple and falls victim to a curse(诅咒);in Shakespeare's novel, Romeo drinks the poison and dies; some ancient Chinese emperors took pellets(药丸)that contained mercury(水银), believing that it would make them immortal, but they died afterward.

    Poison(毒药) has long been an important ingredient in literature and history, and it seems to always be associated with evil, danger and death. But how much do you really know about poison?

    An exhibition, The Power of Poison, opened last month at the American Museum of Natural History in New York, intended to give the audience a more vivid understanding of poison.

    The museum tour starts in a rainforest setting, where you can see live examples of some of the most poisonous animals: caterpillars(毛毛虫), frogs and spiders. Golden poison frogs, for instance, aren't much bigger than a coin, but their skin is covered with a poison that can cut off the signaling power of your nerves, and a single frog has enough venom to kill 10 grown humans.

    "Poisons can be bad for some things," Michael Novacek, senior vice president of the museum, told NBC News. "Yet they can also be good for others."

    A poisonous chemical found in the yew tree is effective against cancer, which is what led to the invention of a cancer-fighting drug called Taxol.

    The benefits from natural poisons are not limited to just medicine. Believe it or not, many substances(物质)that we regularly ingest(摄入)-chili, coffee and chocolate-owe their special flavors or stimulating(提神的)effects to chemicals that plants make to poison insects.

    "The history of the world is but the biography (传记) of great men," argued Thomas Carlyle, the advocate of what has come to be known as the "Great Man Theory of History." This theory suggests that the broader movements and outline of history all go back to the leadership of great individuals who had unique influence on their times. Whether or not Carlyle's theory proves true is debatable, but that certain individuals cast long shadows is not.

    As one who is entrusted with a leadership position, I find it profitable to read of others who have led. Wherever you find me, you'll likely find a good biography nearby. Why is this the case? First, I find good biographies fascinating. I'll occasionally read a novel, but I've never been overly drawn to fiction. I have found myself unable to sleep while in the struggle of the Battle of Britain in William Manchester's The Last Lion. For me, not to read biographies would rob me of pleasure in my life.

    Second, I find good biographies informative. A good biographer tells not only the story of a person, but also of their times. Reading a good biography is like wandering through an intellectual shopping mall. The first store is what drew you there, but you will be pleasantly surprised along the way at what other items grab your attention. You'll find no better account of the British Empire at its peak than the opening chapters of Manchester's Visions of Glory, volume one of his The Last Lion. Strictly speaking, a biography is but a slice of history.

    Third, I find good biographies relaxing. Winston Churchill once noted a man who works with his hands should have a hobby that engages his mind, and a man who works with his mind should have a hobby that engages his hands. Another way to apply Churchill's saying is to combine technical, pen-in-hand vocational reading with leisurely biographical reading. Indeed, few things are more relaxing to me than winding down the evening and entering into another world.

    This is why I love reading good biographies, and why I pity the person who neglects them. Don't be counted among their number.

Love, success, happiness, family and freedom—how important are these values to you? Here is one interview which explores the fundamental questions in life.

     Question: Could you introduce yourself first?

     Answer: My name is Misbah, 27 years old. I was born in a war-torn area. Right now I'm a web designer.

     Q: What are your great memories?

     A: My parents used to take us to hunt birds, climb trees, and play in the fields. For me it was like a holiday because we were going to have fun all day long. Those are my great memories.

     Q: Does your childhood mean a lot to you?

     A: Yes. As life was very hard, I used to work to help bring money in for the family. I spent my childhood working, with responsibilities beyond my age. However, it taught me to deal with problems all alone. I learnt to be independent.

     Q: What changes would you like to make in your life?

     A: If I could change something in my life, I'd change it so that my childhood could have taken place in another area. I would have loved to live with my family in freedom. Who cares whether we have much money, or whether we have a beautiful house? It doesn't matter as long as I can live with my family and we are safe.

     Q: How do your get along with your parents?

     A: My parents supported me until I came of age. I want to give back what I've got. That's our way. But I am working in another city. My only contact with my parents now is through the phone, but I hate using it. It filters(过滤) out your emotion and leaves your voice only. My deepest feelings should be passed through sight, hearing and touch.