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      The meaning of silence varies among cultural groups. Silences may be thoughtful, or they may be empty when a person has nothing to say. A silence in a conversation may also show stubbornness, or worry. Silence may be viewed by some cultural groups as extremely uncomfortable; therefore attempts may be made to fill every gap(间隙)with conversation. Persons in other cultural groups value silence and view it as necessary for understanding a person's needs.

        Many Native Americans value silence and feel it is a basic part of communicating among people, just as some traditional Chinese and Thai persons do. Therefore, when a person from one of these cultures is speaking and suddenly stops, what maybe implied(暗示) is that the person wants the listener to consider what has been said before continuing. In these cultures, silence is a call for reflection.

        Other cultures may use silence in other ways, particularly when dealing with conflicts among people or in relationships of people with different amounts of power. For example, Russian, French, and Spanish persons may use silence to show agreement between parties about the topic under discussion. However, Mexicans may use silence when instructions are given by a person in authority rather than be rude to that person by arguing with him or her. In still another use, persons in Asian cultures may view silence as a sign of respect, particularly to an elder or a person in authority.

Nurses and other care-givers need to be aware of the possible meanings of silence when they come across the personal anxiety their patients may be experiencing. Nurses should recognize their own personal and cultural construction of silence so that a patient's silence is not interrupted too early or allowed to go on unnecessarily. A nurse who understands the healing(治愈) value of silence can use this understanding to assist in the care of patients from their own and from other cultures.

    Many kids help out around the house with chores(家庭杂务) such as emptying the dishwasher, putting laundry away, and taking out the trash. In exchange, some kids get allowances(补贴) or other rewards such as extra computer time.

    But some people do not think that kids should get rewards for doing chores. Susie Walton, a parenting educator and family coach, believes that by rewarding kids, parents are sending a message that work isn't worth doing unless you get something in return. "Running any kind of household is a team effort," Susie said. "A home is a living space for everyone in the family. It's important for kids to see that we all have responsibilities in the house, and that families decide together how they want their home to look, and how they are going to keep it looking like everyone wants it to look."

    Other people believe that getting a cash allowance or other rewards motivates kids to do chores, and it also teaches them real world lessons about how we need to work to earn money. There are also new applications that give kids points and digital gifts that can be redeemed(兑取) either online or in the real world. With the ChoreMonster app, kids earn digital points by completing chores that they can turn in for real-life rewards such as extra Xbox time or a trip to the mall. "Our goal is to encourage kids to earn rewards," says Chris Bergman, founder of ChoreMonster. "Kids need positive reinforcement(强化) to help motivate them."

    What do you think? Should kids be rewarded for doing chores? Or should kids help out around their homes without getting anything in return?

    Write a 200-word response. Send it to tfkasks4youtimeforkids.com. Your response may be published in a future issue of Time For Kids. Please include your grade and contact information of your parent or teacher if you want your response to be published. The deadline for responding is February 18.

    Since the 1970s, scientists have been searching for ways to link the brain with computers. Brain-computer interface (界面) (BCI) technology could help people with disabilities send commands to machines.

    Recently, two researchers, Jose Milan and Michele Tavella from the Federal Polytechnic School in Lausanne, Switzerland, demonstrated（展示）a small robotic wheelchair directed by a person's thoughts.

    In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.

    “Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles,” Tavella says.  “Our system allows disabled people to communicate with external world and also to control devices.”

    The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.

    Prof. Milan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”

    He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.

    Reading can be a social activity. Think of the people who belong to book groups. They choose books to read and then meet to discuss them. Now, the website BookCrossing.com turns the page on the traditional idea of a book group.

    Members go on the site and register the books they own and would like to share. BookCrossing provides an ID number to stick inside the book. Then the person leaves it in a public place, hoping that the book will have an adventure, traveling far and wide with each new reader who finds it.

    Bruce Pederson, the managing director of BookCrossing, says “The two things that change your life are the people you meet and books you read. BookCrossing combines both.”

    Members leave books on park benches and buses, in train stations and coffee shops. Whoever finds their book will go to the site and record where they found it.

    People who find a book can also leave a journal entry describing what they thought of it. E-mails are then sent to the BookCrossers to keep them updated about where their books have been found. Bruce Pederson says the idea is for people not to be selfish by keeping a book to gather dust on a shelf at home.

    BookCrossing is part of a trend among people who want to get back the “real” and not the virtual(虚拟). The site now has more than one million members in more than one hundred thirty-five countries.

    The City of Christchurch, New Zealand was struck by a 7.1­magnitude earthquake on the early morning of Saturday, September 4, 2010.

    No tsunami alert was reported. The country's army troops were on standby to assist victims and disaster recovery operation. New Zealand's Prime Minister John Key, flew to the affected area to inspect and assess the situation of the damaged city. The Prime Minister said that the full assessment of the damages would possibly take months to know the severity of damages. Based from his assessment on what he saw in the area, it could cost at least 2 billion New Zealand dollars or US$1.4 billion for reconstruction.

    "An absolute miracle that no one died," Prime Minister John Key said. Two were seriously injured from this quake and thousands of local residents were awakened after being shaken at 4:35 a.m. of that Saturday.

    There were people trapped inside the damaged buildings but fortunately none were reported dead from the rubble of the damaged buildings.

    "We're all feeling scared—we've just had some significant aftershocks," a survivor told TV One News. "Tonight we're just people in the face of a massive natural disaster, trying to help each other and we're grateful we haven't lost a life."

    GNS Science reported 29 aftershocks within the 14 hours after the quake, with strength from magnitude 3.7 to 5.4.

    New Zealand is no stranger to earthquakes. The country experiences more than 14,000 earthquakes a year—but only about 150 are felt by people.

    "Many buildings here were built with earthquake protection measures. However, in most cities in developing countries, people build how they want to and there're no building controls to force them to build to a higher standard that's safe," Andrew Charleson, an architecture professor at Victoria University of Wellington told CNN.

    Mother Teresa (August 26, 1910-September 5, 1997) was a great woman, who did a lot to improve the social condition of mankind. Due to her contribution in serving the society, she was awarded the Nobel Peace Prize aged 69.

    She was brought up in a Catholic family. When she was only seven, she lost her father. Even as a young child, she was interested in the life of missionaries (传教士). At the age of 18, she decided that she would become a nun. She left her home and went to join the Sisters of Loreto. It was the first step that she made towards providing services for mankind.

    On the 7th of October in the year 1950, Mother Teresa received Vatican permission to start the Missionaries of Charity in Calcutta, the mission of which would be to take care of the needy, the homeless, and people who were shunned by the society. Then it had a number of branches all over the country. The journey of Mother Teresa's Missionaries of Charity started with the setting up of homes for "the Dying".

    In the year 1983, Mother Teresa suffered from a serious heart attack, while she was in Rome. However, she recovered. But, later in 1989, she again got an attack. Her health went worse and in the year 1991, she suffered from pneumonia. Taking her health problems into consideration, Mother Teresa decided to resign (辞职) from the post of head of the order.

    A secret vote was conducted in which all the nuns voted for the stay of Mother Teresa except herself. So, she agreed to continue serving as head of the Missionaries of Charity. Day by day her health was getting worse. On September 5, 1997, exactly nine days after her 87th birthday, this great soul departed for heaven.