Scientists are studying different foods, and they will see which foods protect us from cancer(癌症), and which cause it. It is known that a healthy diet(饮食) will help keep a healthy body weight, which can also decrease the risk(风险) of many types of cancer.

    Fruit and vegetables

    Fruit and vegetables are an important part of a healthy diet. They can decrease the risk of some cancer types like mouth and throat cancer. They are a good source of many important nutrients such as vitamin A, vitamin C, vitamin E, and are an excellent source of fiber.

    Our advice

    Try to get plenty of fruit and vegetables in your diet. Eating fruit and vegetables with a variety of colors will help you get many kinds of vitamins and minerals, as the chemicals that give these foods their colors are good for you.

    Meat

    Eating lots of red and processed meat can increase(增加) your risk of stomach cancer. Red meat includes all fresh and frozen beef, pork and lamb. Processed meat includes ham, bacon and sausage. White meat, such as chicken, is unlikely to increase your risk of cancer.

    Our advice

    Eat smaller and fewer parts of red and processed meat. Try using beans or peas instead of meat in your diet. When you cook meat, use low-temperature methods.

    Fat

    Fat is a necessary part of our diet but high-fat diet can increase our risk of cancer, heart disease and other diseases. Meat is higher in saturated fat(饱和脂肪) and eating too much saturated fat may increase your risk of breast cancer.

    Our advice

    Try not to eat too much fatty foods. In particular, try to cut down on saturated fat contained in fatty meat, biscuits, and butter. Try to avoid frying foods in lots of oil.

    In 2007, the editors of the Oxford Junior English Dictionary, convinced that their reference work “needed to reflect the consensus experience of modern-day childhood.”banned a group of old terms used less today describing the natural world. They inserted newer and supposedly more useful words describing the digital fields that young people in habit today.

    Thus they say goodbye to “acorn”, but say hello to “attachment”. “Beech” and “bluebell” come out of the dictionary. While “blog” and “broadband” come into it. And they say farewell to “catkin” and “cowslip” because here come “celebrity” and “chat room”.

    It's possible, of course, that those Oxford editors had a good reason for their vocabular cleansing. Perhaps they had read the Cambridge University study revealing that most young children can identify Pokémon(神奇宝贝)species far more easily than they can name real-life sparrows.

    But is this simply another fight in the language war, an ongoing battle between people? Some people argue that a dictionary should model how language works best, while some people insist that it should capture how language works now.

In Britain, some citizens felt justified in fighting back against the decision of the Oxford editors. The protest of the thinning of the word herd almost immediately attracted more than200, 000 signatures.

    Susie Dent, author of Modern Tribes：The Secret Languages of Britain, is doing everything in her power to guarantee “the old markers of time”. “Fortnight”(fourteen nights, or two weeks)is among her cherished favorites.

    Thanks to them, I can now show off my knowledge that a “snollygoster” is a “shrewd person, especially a politician”.

    On the eve of our daughters' weddings, I gave both of them what I considered to be excellent marital advice: never leave your husband unsupervised （无人监督的） with pruning shears （修枝剪）.

    If only I had taken my own advice. I recently let my guard down. Thirty﹣some years of marriage can do that to a woman. Give a man pruning shears and electric trimmers （电动修剪器） and he will give new meaning to "armed and dangerous."

One day earlier this year, my husband said that the crab apple tree was dead.

    "Why do you think it is dead?" I asked.

    "Look at it. There's not a leaf on it."

    "There's not a leaf on anything. It's March," I said.

    "It looked sick last fall and with this bitter winter we had, I'm convinced it's dead."

    The truth is he's never liked the crabapple. Sure, it has beautiful blooms in the spring, but then it gets a disease, the leaves curl, and it drops those little apples that sit on the driveway.

    Each passing week he pronounced the tree dead. Eventually I began to believe him. Though he agreed it would be a regrettable loss, there was a twinkle in his eye. He armed himself a couple of weeks ago and began trimming. A branch here, a branch there, a small limb, then a large limb. I watched and then decided to check the wood on some of the branches closer to the trunk. I broke one off and saw green.

    The crabapple was not dead. It just hadn't had time to leaf out. The tree was now falling to one side, but it was not dead. I would have told him so, but he had moved on to a maple. Once the man starts, he can't stop. One trim leads to another.

    "Please, stop!" I called.

    He smiled and nodded, but he couldn't hear because he had started the hedge （树篱） trimmers and was getting ready to fix a line of hedges.

    Zip （飕飕声）, zip, zip.

    "What do you think?" he shouted.

    "It's supposed to be a privacy hedge; now all that will be private are our ankles."

    He started the trimmers again.

    "Stop!" I called, "Come back!"

    "Why?" he shouted.

    "You're in the neighbor's yard."

    You can't always predict a heavy rain or remember your umbrella. But designer Mikhail Belvacv doesn't think that forgetting to check the weather forecast before heading out should result in you getting wet.

    That's why he created Lampbrella, a lamp post with its own rain sensing umbrella.

    The designer says he came up with the idea after watching people get wet on streets in Russia. "Once, I was driving on a central Saint Petersburg street and saw the street lamps lighting up people trying to hide from the rain. I thought it would be appropriate to have a canopy(伞蓬) built into a street lamp," he said.

    The Lampbrella is a standard-looking street lamp fitted with an umbrella canopy. It has a built-in electric motor which can open or close the umbrella on demand. Sensors (传感器)then ensure that the umbrella offers pedestrians shelter whenever it starts raining.

    In addition to the rain sensor, there's also a 360 motion sensor on the fiberglass street lamp which detects whether anyone's using the Lampbrella. After three minutes of not being used the canopy is closed.

    According to the designer, the Lampbrella would move at a relatively low speed, so as not to cause harm to the pedestrians. Besides, it would be grounded to protect from possible lighting strike. Each Lampbrella would offer enough shelter for several people. Being installed at 2 meters off the ground it would only be a danger for the tallest of pedestrians.

    While there are no plans to take Lampbrella into production, Belyaev says he recently introduced his creation to one Moscow Department and insists this creation should be installed on the street where a lot of people walk but there are no canopies to provide shelter.

    Around the world, 62 million girls are not in school. The White House's Let Girls Learn effort aims to change that.

    At 13, Hawa Abdulai Yorke left her family's home, in Ghana, Africa, to live with an aunt who promised to send her to school. Instead, the aunt put Yorke to work as her maid. Determined to go to school, Yorke returned home and began selling water in a nearby city to raise
money for her education. She did that for three years. What hurt most was that her father had the money to pay the school fees. But he chose to spend the money on a motorcycle.

    Yorke's story is familiar to girls growing up in Ghana. There, a girl's place is in the home. Educating girls is considered a waste of money.

    “It happens more than it should, where parents have money to send their girls to school but choose not to,” says Ryan Roach, a Peace Corps volunteer in Ghana, where nearly 55% of girls are not enrolled in secondary school. “Cultural beliefs say education is not a wise investment(投资)”

    The White House's Let Girls Learn is working to change this view of girls' education, in Ghana and in countries worldwide. First Lady Michelle Obama says parents have to be persuaded that girls' education is a better investment than marriage or household labor. A World Bank study backs that up. It shows that for every year of secondary-school education, a girl's earning power increases by 18%.

    Today, Let Girls Learn works in 13 countries, and there are plans to expand the program. Recently, Let Girls Learn hosted a 24-hour event at which girls in different parts of Ghana joined Peace Corps volunteers, tech experts, and university students to brainstorm creative solutions for the barriers to girls' education. Yorke's team came up with an idea for an app that sends a recorded message to parents' phones from a Ghanian celebrity about the benefits of girls 
attending school.

    Yorke, now 22, is about to finish high school. Thanks to Let Girls Learn, she plans to attend college and study computer science. She says working alongside women college students at the Let Girls Learn event strengthened her determination. “I'm focused on my books,” says Yorke. "I know if I study hard, I, too, can go to the university and live a happy life."

    Many of us have had this experience: we lie down in a bed other than our own, perhaps at a friend's house or in a hotel room, and find it difficult or impossible to fall asleep. Is it because the bed is uncomfortable? Maybe, but perhaps there can be other reasons.

    According to a new study published in Current Biology, a significant reason is what the scientists call "first night effect". They believe that one side of the brain acts as a "night watch" to warn us about potential dangers. It forces us to stay awake on the first night in a new environments.

    For the study, 35 young volunteers were asked to sleep in a sleep lab for several days. Meanwhile, researchers watched their brain activities.

    According to the researchers, on their first night, the left brain was more active than the right brain and people had a hard time sleeping. However, left-brain activities decreased as days went by, falling even to the point of complete calm. In this process, the participants got an increasingly better sleep experience.

    The findings suggest that the different rhythms of the sides of the brain affect our sleep. When the two sides work differently, the balance between them is broken. Thus, the brain can't relax and is sensitive to anything strange in the surroundings, just as it is in the daytime.

    "At some level, the brain is continuing to analyze things, even though you are not aware of the analysis, " US professor Jerome Siegel told Smithsonian

    "If something unusual happens - if a door opens or you hear a key in a lock --you can be alert, even though the intensity of the stimulus (刺激强度) is quite low." More surprisingly, this phenomenon is similar to the way some animals sleep.

    The researchers think that it is the result of evolution (进化), and works to protect us in potentially dangerous environments.

    If you have ever had what you think is "first night effect", researchers suggest that you bring your own pillow or sleep in a room similar to your bedroom next time you sleep away from home.