Alibaba started taking the lead in China, simply enough, by connecting big Chinese, manufacturers(制造商)with big buyers across the world. Its business-to-business site, Alibaba.com allowed business to buy almost everything. Alibaba's advantage wasn't hard to identify: size.

    Alibaba is just big, even by Chinese standards. Its marketplaces attract 231 million active buyers, 8 million sellers, 11.3 billion orders a year—and Alibaba is just the middleman. It encourages people to use its markets—not charging small sellers a percentage of the sale.

    If you want a quick look into the influence of Alibaba on daily Chinese life, take my experience. I moved to Beijing almost a year ago and quickly got tired of visiting small stores across the crowded, polluted city of 20 million people in search of new electronics, bathroom furnishings. “You're looking for what exactly? Why not try it? ” my Chinese teacher asked me one day. With that, my wonderful new relationship with Alibaba began.

    Alibaba's original business-to-business model now is secondary to consumer buying. Chinese retail（零售）buying makes up 80% of Alibaba's profit, and leading that group is Taobao, with 800 million items for sale and the most unbelievable selection of things you'll ever find. TMall.com is Alibaba's other big site, where you can find brand name goods from Nike and Unilever near the lowest prices.

What I have a hard time explaining to friends and family back in the U. S. is how China has gone beyond traditional shopping—big-box retailers(零售商)especially—in favor of online purchases on Taobao and a few other sites. In smaller towns than Beijing, where big retailers have not yet traveled, shopping online is shopping, and shopping is Taobao.

    I have a list of some of my recent purchases on Taobao for a sense of how extensive(广泛的) the marketplace is. Almost everything arrived a day or two after ordering with free shipping. I'm not even a big buyer, because I need friends to help me search the Chinese-language site. When I was searching my purchase history on my Chinese teacher's iPad, which helps me buy goods, I looked through with great difficulty about 10 of her purchases for every one of mine.

    It is important to protect yourself from harmful rays. But if you think a high-factor sunscreen keeps you safe from harmful rays, you may be wrong. Research in this week's Nature shows that while factor 50 reduces the number of melanomas（黑瘤）and delays their occurrence, it can't prevent them. Melanomas are the most aggressive skin cancers. You have a higher risk if you have red or blond hair, fair skin, blue or green eyes, or sunburn easily, or if a close relative has had one. Melanomas are more common if you have periodic intense exposure to the sun. Other skin cancers are increasingly likely with long-term exposure.

    There is continuing debate as to how effective sunscreen is in reducing melanomas – the evidence is weaker than it is for preventing other types of skin cancer. A 2011 Australian study of 1,621 people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed. A second study, comparing 1,167 people with melanomas to 1.101 who didn't have the cancer, found that using sunscreen routinely, alongside other protection such as hats, long sleeves or staying in the shade, did give some protection. This study said other forms of sun protection – no sunscreen – seemed most beneficial. The study relied on people remembering what they had done over each decade of their lives, so it's not entirely reliable. But it seems reasonable to think sunscreen gives people a false sense of security in the sun.

    Many people also don't use sunscreen properly applying insufficient amounts, failing to reapply after a couple of hours and staying in the sun too long. It is sunburn that is most worrying – recent research shows five episodes of sunburn in the teenage years increases the risk of all skin cancers.

    The good news is that a combination of sunscreen and covering up can reduce melanoma rates, as shown by Australian figures from their slip-slop-slap campaign. So if there is a heat wave this summer, it would be best for us, too, to slip on a shirt, use sunscreen and slap on a hat.

    My mother loves flowers. As soon as warm weather comes around, you will find her planting, watering and weeding over everything. For many years we lived next door to each other, and she spent as much time in my garden as she did her own. After the flowers became plentiful each summer, she would cut colorful bouquets (花束) to enjoy inside the house－both hers and mine. I would often come home from work and find a beautiful arrangement (布置) of fresh flowers on my coffee table.

    Shortly before Christmas one year, a local flower shop offered a bouquet month special. It seemed to be a great way to thank her for all of the flowers she had given me through the years. After the holidays, in early January, I drove her to the flower shop to pick up her first month's bouquet. The small fresh colorful bouquet would hardly fill a small vase (花瓶).

    I was so embarrassed(尴尬的). However, after we returned home, she began to arrange the flowers she had received. “Mom, I'm sorry,” I told her. “I can't believe how skimpy that bouquet is.” She looked at me and smiled. “It's okay,” she said. “It allows me to better enjoy the beauty of each one.”

    Mom's words helped me to realize something bigger and more important－when we have too many good things, we often fail to enjoy the beauty of each one.

      Thanks, Mom, for helping me understand that less is sometimes more.

    "Hey, Bruno! Great to see you again, man!" Zeca shouted. "Come over here and meet the boys." But before Bruno could move he was frisked by two guards. He cringed as the men searched his body for hidden guns, knives or other weapons.

    "He's clean, boss," one of the men shouted out.

    Zeca introduced all the members of his gang, including the man who worked inside the printer's who was going to steal the exams. He then explained all the details of the plan. It seemed foolproof and nothing could go wrong.

    They all shook hands and quickly left.

    Bruno's heart was beating fast. He was anxious to get away from the gang and phone Clara. He raced down the hill. Then he stopped at the bottom and looked behind him. It was clear, no one was following him. He took out his phone and called Clara.

    "Hey, Clara. Listen." He was out of breath, panting heavily. "Everything went according to plan. To my plan, of course, not Zeca's!" he added, laughing excitedly.

……

    "This is amazing!" the police officer said, smiling broadly, as he looked at Bruno and Clara, who were sitting in front of him at the police station. "Well done! How did you manage to come up with such a brilliant idea?"

    "Thanks. I guess it was kind of clever." Bruno answered, acknowledging the compliment with a polite smile. He felt slightly embarrassed. "Believe it or not, the idea just popped into my head while I was taking a shower. I remembered I saw an advert once on the Internet for special spy-camera sunglasses. They have a tiny, hidden, built-in video recorder. Here they're only used by detectives and law enforcement agencies, but anybody can buy them on the Internet."

    When Bruno talked to Clara before his meeting with Zeca's gang, they both agreed it would be wrong to steal the exams, and help Zeca sell them to other people. But Bruno had worked out an ingenious plan to dounle-cross Zeca and stay out of trouble himself.

    First of all, he had wisely agreed to go along with Zeca's plan, and go to the meeting with the gang of thieves. When he arrived at the hideout, they frisked him for hidden weapons, but no one ever imagined that Bruno was wearing sunglasses with a tiny built-in camera. Bruno had secretly videoed the entire meeting, making sure he had taken close-up shots of all the gang members. Their conversations with all the details of their plan had also been recorded.

    Then, as soon as he was sure that he wasn't being followed, he phoned Clara and together they went to the police with the camera and told them the whole story.

    "Thanks to this evidence we can finally catch Zeca and his entire gang red-handed," the police officer continued. "But we need you and Clara to help us. It's very important that you both continue to act as if nothing has happened. You must play along with whatever Zeca wants. We'll be following your every move from now on. Just do everything Zeca tells you to, OK?"

    The police then went to the printer's and spoke to the owner. He agreed to co-operate and they installed some hidden cameras there, too. The day of the theft they saw the thief copy the exam papers on Closed Circuit Television(闭路电视), but they did not arrest him yet.

    Then they waited until Zeca made the next move.

    A campaign is being launched to encourage children to surrender 30 minutes of screen time a day to head for the great outdoors.

    The newly formed Wild Network—a collaboration of nearly 400 organizations—is attempting to attract youngsters away from television and computer screens to fields, woods and parks. Members of the network include the National Trust, RSPB, Play England and the NHS. Organizers say it is the UK's biggest ever campaign to reconnect children with nature and outdoor play, and claim it could help improve fitness, mental alertness and general well-being.

    A documentary film, Project Wild Thing, will forecast the launch at more than 50 cinemas across the UK from Friday. It looks at the increasing link between children and nature.

    Andy Simpson, chairman of the Wild Network, said, "The tragic truth is that kids have lost touch with nature and the outdoors in just one generation. Time spent outdoors is decreasing, roaming (漫步) ranges have fallen largely, activity levels are declining and the ability to identify common species has been lost."

    Suggestions on how to get more time in nature include collecting conkers (七叶树果), camping, snail racing, and observing autumn colour on trees.

    From January, the network will aim to make suggestions on how the government can do more to get children muddy and bright-eyed.

    This is not the first time the message of less screen time, more play has been brought up. Children in the 1980s were requested to do the same by the BBC TV series Why Don't You, which somewhat confusingly called on its viewers to "switch off the TV set and go to do something less boring instead".

Dear Mary,

How are you? I saw you posted some wonderful photos of the coastline near your hometown. You're really getting into your photography! Right now I'm taking a break to write you an email.

Remember you said you'd like to come over to the UK sometime this year? Well, I was thinking that this year you might like to come to the Edinburgh Festival with me in August. I've got an aunt with a flat in the city center who could put us up.

Do you know much about the festival? It's very famous — the biggest, most popular arts festival in the world! There are lots of things going on — art exhibitions, concerts of all kinds, modern dance, a book festival, etc. The thing it's most famous for is the newest and most exciting theatre. People come from all over the world and perform in their own languages.

In Scotland you have the best of both worlds: culture and wild land. After the festival, we could hire a car and go up to some of the islands off the west coast, like Skye. The weather can be changeable in August, but the landscape is beautiful, with empty beaches and rocky mountains. It's the perfect place for you to take photos. Afterwards, we could head back to the east coast and visit my friend Rob in St. Andrews. It's really pretty and Rob's enjoyable to be with. You'd get on well with him.

So, why don't you have a think about it and then get back to me? Take your time, there's no rush.

Speak to you soon.

Yours,

Sophie