Gardening can be a very relaxing hobby for many people and this wonderful experience is not just for adults. Children are interested in gardening as well, if given the chance to explore nature and science in this way. Gardening can bring joy to both children and their parents alike, especially when the experience is shared together.

    The time that is spent gardening together builds precious memories within their hearts and minds for years to come. When you are gardening with your children, try to give them their own special area. Keep their area in the center of the best soil and light, as you want to make sure of a successful gardening experience.

    Plastic tools easily break and are difficult to use in the dirt, so when you are gardening with your children, give them real tools to use if possible. Even offering to let them use your tools is a way to admit the worth of the work they are doing. It is also important to talk with your children about the whole process of gardening, from planting to the harvest. They need to understand how things work and the importance of what they are doing.

    Show off the children's gardening work by taking friends and visitors for a walking tour through the garden and point out the children's particular spot. When you give attention to the children's work, this is a great motivation（动机） for children to continue wanting to be involved. Do not force children to take part when they are in a bad mood or if they are becoming bored. Instead, allow them to do something different, like building a scarecrow(稻草人)! This makes the gardening experience even more interesting. As you work together side by side with your children, you will encourage a love of the land in them, as well as creating lasting memories of time spent with you.

    I returned home the other night, tired. My husband asked me how my evening was, “Great.” I told him. I had spent 90 minutes in a gym with 10 Ping-Pong tables and all kinds of players, all playing a little ball over the net. By 9 pm, I was excited, tired, satisfied. I had beaten two young men half my age and lost battles against other competitors. To an observer, the night was common. To me, it was a lucky thing that I hadn't expected.

    I had taken up Ping-Pong during college, and in my 30s took more advanced lessons. However, a serious accident hurt my leg, which made me unable to take exercise. Months later, I tried to play Ping-Pong but my leg pained for a week. I put the game out of my mind.

When I was 53, one day my bad leg was working a little bit better. Could Ping-Pong be possible for me, now—in my condition, at my age? I tried to play Ping-Pong again

    Ping-Pong is a sport which requires endurance(耐力). Players need quick foot work and upper body movements to return balls, requiring faster response time than tennis.

    Playing Ping-Pong offers benefits for the brain. A study of 164 women aged 60 and older showed that Ping-Pong improved cognitive(认知)function more than dancing, walking or gymnastics. “The great thing about our sport is that it can be played by anyone,” said Jimmy Butler, a four-time national USA Table Tennis Association winner. “I see 90-year-olds and 10-year-olds.”

    Years passed and my endurance improved. People started to praise my shots. I won a game. Then I won agin. These days, I feel wonderful, I believe this sport is the fountain (源泉)of youth.

    Teachers' Day is, interestingly, not celebrated on the same day all over the world. In some countries it is marked by a holiday; in others it is a working day.

    International Teachers' Day is celebrated on October 5. Being held ever since 1994, it is in honor of teachers' organizations worldwide. Its aim is to encourage supports for teachers and to meet the needs of students.

China — In 1939, Teachers' Day was set for August 27, Confucius' birthday. In 1951, the celebration was stopped. However, it was founded again in 1985, and the day was changed to September 10.

India — Teachers' Day is celebrated on September 5 in honor of Dr. Sarvepalli Radhakrishnan, the second president of India, whose birthday falls on that day.

    Russia — In Russia, Teachers' Day was celebrated on the first Sunday of October between 1965 and 1994. Since 1994, the day is observed on October 5, just the same day as World Teachers' Day.

    The US - In the US, Teachers' Day is non-official holiday. It is celebrated on the Tuesday of the first full week of May. A number of activities are organized in schools to honor teachers. The celebrations can continue for the whole week of May.

Thailand — In Thailand, National Teachers' Day is celebrated every year on January 16. The first Teachers' Day was held in 1957. The day is a holiday in schools.

    Li Hua is currently studying at Cambridge, UK. She has bought a bicycle and is worried about security. Her friend, Kate, found this article and sent it to her.

    Introduction

    A lot of crime is against bicycles. About 150, 000 bicycles are stolen every year and most are never found. You can prevent this happening by following a few careful steps.

    Basic Security

    Do not leave your bicycle in out-of-the-way places. Always lock your bicycle when youleave. Secure it to lampposts or trees. Take off smaller parts and take them with you, for example lights and saddlesleave（车座）.

    Locks

    Get a good lock. There are many different types in the shops. Buy one that has been tested against attack. Ask for a recommendation from a bike shop.

    Marking

    Security marking your bike can act as a deterrent to a thief. It can also help the police find your bicycle. It should be clearly written and include your postcode and your house or flat number. This will provide a simple way to identify your bicycle.

    Registration (登记)

    There are a number of security companies who will help mark your bicycle for you. They will then put your registration number and personal details on their computer database. Then if your bicycle is found it will be easy to contact you.

    Finally

    Keep a record of the bicycle yourself: its maker, model and registration number. You can even take a photograph of it. This will prove the bicycle belongs to you.

    Google previously announced successful tests of machine learning systems designed to assist doctors. In one case, Google reported AI had examined eye diseases with equal accuracy to doctors. Other tests showed that machine learning can be used to study large amounts of patient data to predict future medical events.

    Now the company has published two new studies showing a high level of success in identifying metastatic breast cancer. Metastatic means that cancer has spread from its main area to other parts of the body. Metastatic breast cancer is one of the deadliest, causing about 90 percent of all breast cancer deaths worldwide.

    In metastatic breast cancer patients, the cancer often travels to nearby lymph nodes（淋巴结）. Usually doctors examine lymph node tissue under a microscope to see whether cncer is present Google notes that previous studies have shown that up to one-fourth of metastatic lymph node classifications end up being changed after a second examination. In addition, studies show that small metastatic material can be missed up to 67 percent of the time when examinations happen under extreme time restrictions.

    Google says it created a mathematical algorithm(算法).The algorithm, called Lymph Node Assistant, is trained to find characteristics of tissue affected by metastatic cancer. When the system examined tissue images (图像), it was able to differentiate between metastatic cancer and non-cancer 99 percent of the time. In addition, the Lymph Node

    Assistant is highly effective at finding the positions of the cancers. Some of these positions would be too small for doctors themselves to identify. The research also showed that the algorithm method can reduce the usual time needed to examine the disease by about 50 percent.

    But Google makes clear the Al-based system is not meant to replace the work of medical professionals. Instead, it is designed to reduce the number of false identifications and help doctors work faster and more effectively.

We all know how it feels to get lost in a great book. But what's happening in our brains as we dive into it? How is it different from what happens as we experience real life? Now, a new study led by Dr Leila Wehbe and Dr Tom Mitehell of Carnegie Mellon University have provided partial answers to these questions. 

Since reading comprehension is a highly complex process, earlier studies tried to break that process down and focus on just one aspect at a time: mapping fMRI signatures（特征）associated with processing a single word or sentence, for example. "It's usually not like reading a book, and usually the stimulus（刺激物）consists of out-of-context sentences designed specifically for the experiment"

To address these issues, the researchers developed a computer program to look for patterns of brain activity that appeared when people read certain words, specific grammatical structures, particular characters" names and other aspects of the story—a total of 195 different "story features". In the study, they first asked eight volunteers to read Chapter 9 of Harry Potter and the Sorcerer's Stone and recorded their brain activity using an fMRI scanner（扫描仪）. Then the researchers fed the volunteers' fMRI data into their computer program and had the program identify the responses of different brain regions to the 195 features mentioned above. 

The result showed that when the volunteers read descriptions of physical movement in the story, there was significantly increased activity in the posterior temporal cortex, the region involved in perceiving real-world movement. Besides dialogue was specifically related with the right temporoparietal junction, a key area involved in imagining others thoughts and goals. "This is truly shocking for us as these regions aren't even considered to be part of the brain's language system," Wehbe says. 

Next, Wehbe and Mitchell hope to study how and why language processing can go wrong. "If we have a large enough amount of data", Wehbe says, "we could find the specific ways in which one brain—for example, the brain of a dyslexic（诵读困难的）person—is performing differently from other brains." And this, the researchers think, may someday help us design individually tailored（特制的）treatments for dyslexia and other reading disorders.