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 identification 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 have 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 BookCrossing to keep them updated about where their books have been found. Bruce Peterson 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 to 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.

    It may sound strange, but cutting down a real tree for Christmas is actually greener than going with the artificial kind, one scientist says.

    “It is a little confusing to people,” said Clint Springer, a biologist at Saint Joseph's University in Philadelphia. Because of concerns over deforestation（砍伐森林）around the world, many people naturally worry that buying a real tree might contribute to that problem. But most Christmas trees for sale these days are grown not in the forest but on tree farms for the purpose of being cut.

    Moreover, from the viewpoint of greenhouse gases, real trees are “the obvious choice”. Live trees actively release oxygen as they grow, and meanwhile remove carbon dioxide from the atmosphere. After they have been cut and Christmas is over, they're usually cut into smaller pieces for mulch（覆盖物）. As mulch, the bits of trees very slowly release carbon dioxide back into the atmosphere. So in the end, a real Christmas tree is carbon neutral, putting the same amount of carbon dioxide back into the air as it took out (although much more slowly).

    The tree farms that grow the trees also replant after the trees are cut.  Artificial trees, on the other hand, don't come out even in the carbon balance. Petroleum（石油）is used to make the plastics in artificial trees and lots of carbon dioxide-creating energy is required to make and transport them. Because these trees just end up in the places where waste is buried under the ground after use, “those greenhouse gases are lost forever,” Springer said.

  Dubai Aquarium & underwater Zoo

    Experience
    You will be surprised at the amazing collection consisting of over 140 species including 300 sharks, rays and the largest collection of sand tiger sharks in the world. Walk along the Rainforest, Rocky Shore and Living Ocean environments at the Underwater Zoo and you will find yourself face to face with dangerous piranha, giant catfish, playful otters, a Humboldt penguin colony and more.
    Options
    Basic Pass: With this basic pass, you'll get access to the Dubai Aquarium and underwater Zoo.
    Explorer Pas: If you're looking to get a little closer to the sea creatures, then this pass is for you. Along with the explorer pass you can also get access to the submersible simulator(潜水模拟器)  & big screen theater and a free ride on the glass-bottom boat.
    VIP Line Buster: This pass includes all the benefits of an explorer pass and a tour guide. And you can get to try your hand at fish feeding!
    Timings
    Sunday--Wednesday: 10:00 am--11:00 pm
    Thursday--Saturday: 10:00 am--12:00 am
    Pro Tip
    You can save a lot by buying a combo ticket(套票). This ticket gives you access to Undersea Zoo and Aquarium Tunnel alongside tickets to the observation deck on the 124th floor of the Burj Khalifa. Your government ID card has to be presented at the entrance.

    One summer I was driving from my home town of Tahoe City, Calif., to New Orleans. In the middle of the desert, I came upon a young man standing by the roadside. He had his thumb out and held a gas can in his other hand. I drove right by him. There was a time in the country when you'd be considered a jerk if you passed by somebody in need. Now you are a fool for helping. With gangs, drug addicts, murderers, rapists, thieves lurking everywhere, "I don't want to get involved" has become a national motto.

    Several states later I was still thinking about the hitch­hiker. Leaving him standing in the desert did not bother me so much. What bothered me was how easily I had reached the decision. I never even lifted my foot off the accelerator.

    Does anyone stop any more? I wondered. I recalled Blanche DuBois's famous line: "I have always depended on the kindness of strangers". Could anyone rely on the kindness of strangers these days? One way to test this would be for a person to journey from coast to coast without any money, relying solely on the good will of his fellow Americans. What kind of Americans would he find? Who would feed him, shelter him, carry him down the road?

    The idea intrigued me.

    The week I turned 37, I realized that I had never taken a gamble in my life. So I decided to travel from the Pacific to the Atlantic without a penny. It would be a cashless journey through the land of the almighty dollar. I would only accept offers of rides, food and a place to rest my head. My final destination would be Cape Fear in North Carolina, a symbol of all the fears I'd have to conquer during the trip.

    I rose early on September 6, 1994, and headed for the Golden Gate Bridge with a 50­pound pack on my back and a sign displaying my destination to passing vehicles: "America".

    For six weeks I hitched 82 rides and covered 4,223 miles across 14 states. As I traveled, folks were always warning me about someplace else. In Montana they told me to watch out for the cowboys in Wyoming; in Nebraska they said people would not be as nice as in Iowa. Yet I was treated with kindness everywhere I went. I was amazed by people's readiness to help a stranger, even when it seemed to run contrary to their own best interests.

    Although toys packaging says it's educational, it doesn't make it so. That's the finding from a new study in JAMA Pediatrics that found some toys being marketed as language promoters got in the way of learning.

    Research shows that for kids to understand, speak and eventually read or write a language, they need to hear it - lots of it. And it's never too early for parents and to caregivers to get talking. That explains the booming industry in talking electronic toys that claim to help kids learn language.

    Professor Anna Sosa, of Northern Arizona University, led the study and says she gave families three different kinds of toys to play with: books, traditional toys like humble blocks and a shape sorter, and electronic toys. Sosa says she picked those toys because they are advertised in their packaging as language-promoters for babies between the ages of 10 and 16 months.

    "We had a talking on farm-animal names and things," Sosa says of the electronic toys. "We had a baby cell phone. And we had a baby laptop. So you open the cover and start pushing buttons, and it tells you things. The parent-child couples were asked to play separately with each type of toy over the course of three days."

    "When there's something else that's doing some talking, the parents seem to be sitting on the sidelines and letting the toy talk for them and respond for them," Sosa says. "That's bad because the best way a toy can promote language in infants and toddlers is by stimulating interaction between parent and child. There's simply no evidence that a young child can learn language directly from a toy. It isn't responsive enough. It isn't social."

    As for the other toys, traditional blocks and puzzles stimulated more conversation than the electronic toys, and books outscored them all. But don't underestimate the humble block. While traditional toys fell short of books in interaction quantity, Sosa notes, they kept pace in terms of quality.

Jean was a teacher who taught first grade. She drove an old Jetta with dull blue paint and worn seats. It wasn't the speediest tool, but Jean was never late to work. In fact, each school day she was the first teacher to arrive and the last teacher to leave.

She took great care to plan instruction, create assessments, and decorate her classroom. Parents in the neighborhood would beat down the principal's door to have their children arranged to her class. Jean could teach a mouse to read, and all her students passed into second grade with advanced vocabularies and language skills.

One August, two sisters in high school did not want to enter foster care (家庭寄养). They contacted their first grade teacher, Jean. Jean lived in quite an ordinary home with her son. Yet, she took the sisters in. Packed with children, the little blue Jetta sputtered (劈啪作响), but they had a good laugh.

One day, Jean spoke about her car, which she had driven for many years and had been old enough to retire. It was kind of dangerous for students to ride in such a car. She wanted a van. However, a new van was not within her ability. As a good friend, I listened to her concerns. Then, an idea came to me. I wrote a letter to The Oprah Winfrey Show, sharing Jean's story and her wish.

A month passed. Jean was invited to attend The Oprah Winfrey Show. Oprah hugged the teacher and told the details of Jean's story. Oprah announced that Jean deserved a new van.

The year was 1999. Six hundred miles away, I watched the joy of it all from the television. Jean's big heart taught me many lessons that year. One of them is that the simplest acts (like writing a letter) can require a strong faith. And nothing impossible.