Europe is now the biggest market for organic food in the world, having grown by 25  percent a year over the past 10 years. Denmark's agriculture minister is herself an organic farmer. The UK market for organic food grew by 55 percent in 2000, while the food market as a whole grew by only one percent. Yet only seven percent of British shoppers account for nearly 90 percent of organic sales. However popular the idea of organic farming may be, it is still an interest for only a few people.

    So what makes the idea of organic farming popular? Organic farming means farming with natural materials, rather than with man-made fertilizers or pesticides. Organic farmers rely on many  methods — such as crop rotation (农作物的轮作) and the use of resistant varieties, because they are necessary for organic farmers to compensate for the shortage of man-made chemicals.

    Organic farming is often supposed to be safer than traditional farming for the environment. Yet after a long research on organic farming worldwide for a number of years, science continues to be against this opinion. The House of Commons committee on agriculture publicized that, even with complete research work, it would fail to find any scientific evidence to prove “that any of claims （宣称） made for organic farming is always true”.

    However, the talk about the benefits of organic farming is going on. This is partly because many people depend on their individual farm, the soil, the weather, and so on.

    We humans spend about one-third of our lives asleep. This may sound like a lot of time, but it is not wasted. Sleep not only helps us stay healthy but it also helps our brains remember. Our brains need good sleep to remember what we do and learn during the other two thirds of our lives when we are awake.

    Researchers at the University of Wisconsin-Madison have found that sleep helps improve brain performance by shrinking(收缩)synapses in the brain. A synapse is the area where cells pass messages to other cells.

    Scientist Chiara Cirelli is a leader at the school's Center for Sleep and Consciousness. She told the reporter that sleep is when the human brain mixes information it has learned while awake into its general collection of knowledge. Meanwhile, the brain forgets unimportant details. This forgetting is important. It makes space for new learning and new memories.

    Cirelli said that the Centers research began with this hypothesis(假设): We sleep so that our brain can repair and refresh itself. She said the idea seems simple and reasonable. However, testing and discovering how it works has been extremely difficult.

    Synapses are only about 20-40 nanometers(纳米)wide. The team began their study by measuring the size of the synapses to look for changes in these already tiny spaces between nerve cells. Cirelli says the process(过程) is difficult because"all the actual measurements of the synapses have to be done by hand." The team had to wait until improvements in laboratory technology made it possible to see these tiny changes. A University of Wisconsin press release called the research a"huge job." Many research specialists worked for four years to photograph, rebuild and study certain areas of a mouse brain. The report also said the scientists measured 6,920 synapses.

    Cirelli says they found that our synapses shrink as our brains clean themselves during sleep. We wake up refreshed and ready to fill those synapses with new information. The research findings are the result of years of hard work at the University of Wisconsin Madison. The researchers published their findings in the journal Science.

    Many people in high school cannot wait to go to college and leave their hometown behind. Questions arise, though, when it comes to all of the decisions involved in choosing a college.

    One of the first considerations may be finance. State and public colleges are often the least expensive. Often, though, the better colleges are private and more expensive. It is sad when gifted students cannot attend a college of their choice just for financial reasons.

    Another major factor is location. Whether the college is in a small town or large city can have a major impact on its activities. A water lover probably will be more comfortable spending four years near an ocean or a lake. Those who cannot tolerate heat will probably be more comfortable at a northern college. Distance from home may also come into consideration. If family is a top priority, that person should stay close to home; on the other hand, if independence is desired, a campus farther from home would be more appropriate.

    School size also plays a major role in the decision process. If you want to get to know your teachers, a small college is suitable. For those of you who consider yourself a “people person” and want a wide range of activities, a large college is more fitting. Your area of interest is another factor to consider in the decision-making process if you want to get the most from your education. The whole point of college is to learn what is of interest to you.

    Crucially(至关重要地), one must take into consideration the colleges by which you can realistically be accepted. An Ivy League school for an average student would probably not be a good match. Similarly, an average school for an above-average student would not work well. The college should provide enough of a challenge for the student to work hard. Although there may not be the perfect college out there, there probably will be one that is close. Those who cannot find a suitable college are probably not looking hard enough.

    An interesting study posted on Facebook recently shows how men and women develop new interests as they mature(成熟).

    While women tend to take exercise seriously from the age of 34, men will wait until their 45th birthdays before working hard to get in shape. The average woman spends more time talking about sports, politics, career and money as she gets older.

Women's interest in books reaches its peak(顶峰) at the age of 22, while that of men does so when they are in their 50s.

    Men start to change their focus from the workplace to other things after age 30, while women do not do so until eight years later. Both, however, care most about fashion at age 16.

    The research used anonymous(匿名的) data donated by thousands of Facebook users, recording the statuses, 'likes' and 'interests' they had posted on their profiles.

It found the average woman talks about television most at 44, while men peak much younger, at age 31.

    Men are also most likely to see a film in a cinema at age 31, while women go out to see films most when they are only 19.

    Men are most interested in travel at 29, women at 27, while women talk most about food and drink at 35, and men at 38.

    And if you are middle aged, a safe topic for any audience is the weather, which is a key interest for many as they approach 60.

    Stephen Wolfram, the British scientist who carried out the research, says, “It's almost shocking how much this tells us about the changes of people's typical interests.

    “People talk less about video games as they get older, and more about politics.”

    Back in 1988, Red Delicious made up 70 to 80 percent of the domestic apple market. Over the years, farmers sold a lot of them because they looked great. But they had a floury texture (质地), and people want an apple that's firm, crisp(脆的)and juicy. I started searching for one. By 1994, threatened by varieties from Japan and New Zealand, the U.S. apple industry and Washington State University agreed that we had to grow our own.

    First, we cross-pollinated(授粉) existing apples: Collect pollen from one flower, put it on the tip of a pencil eraser, and rub it into another. We crossed dozens of crisp, tasty varieties such as Gala, Fuji, and Pink Lady. But the best breed came out of Honey Crisp and Enterprise parents. We grew the cross-bred seeds into 5-foot trees, grafted those to rootstocks(根茎) to make them start producing quickly, and planted them in evaluation gardens. A few years later, they fruited—and we began tasting.

    So I would walk down long rows of hundreds and thousands of trees, and when I found an attractive fruit, I'd bite, chew, spit it out. Most were terrible, but when I found one with good texture and taste, I'd pick 10 or 20 of them. Then I put them in cold storage to see how they would hold up after a few months. After that, three or four researchers sat down and tasted every apple. We checked acidity and sugar levels, which can break down over time, and tested firmness and crispness using instruments that measure pressure and cell breakdown.

    When we found exactly what we wanted, we planted and tested them all over again. Eventually, we ended up with the Cosmic Crisp. It can spend nine to 12 months in storage, and stay crisp, firm, juicy and sweet.

    Alan Naiman was known for being very careful about how he spent his money. But even those closest to him had no knowledge of the fortune he quietly gathered and the last act he had planned.

    Naiman died of cancer at age 63 last January. The man from the American state of Washington gave most of his money to groups that help the poor, sick, disabled and abandoned children.

    He gave them $11 million. The large amount of his fortune shocked the groups that received his gifts and even his best friends. That is because Naiman had been known to repair his own shoes with duct tape. He had sought deals to buy food from grocery stores at closing time and taken friends out to lunch at low cost restaurants.

    Naiman died unmarried and childless. He loved children but also was intensely private. He saved, invested and worked extra jobs to gather money. He rarely spent the money on himself after seeing how unfair life could be for children who suffer most.

    Naiman was a former banker who worked for the past 20 years at the state Department of Social and Health Services. He earned $67,234 a year and also took on side jobs. Sometimes, he worked as many as three at a time. He saved and invested enough to make several millions of dollars. He also received millions more from his parents after they died.

    He left $2.5 million to the Pediatric Interim Care Center in Washington. The center is a private organization that cares for babies born to mothers who abused drugs and children with drug dependency. The center used the money to pay off its mortgage (按揭) and buy a new vehicle to transport the children.

    Naiman gave $900, 000 to the Treehouse, where children without parents can choose toys and necessities for free. Treehouse is using Naiman's money to expand its college and career support services Statewide.