Four people in England back in 1953, stared at Photo 51,It wasn't much—a picture showing a black X. But three of these people won the Nobel Prize for figuring out what the photo really showed –the shape of DNA The discovery brought fame and fortune to scientists James Watson, Francis Crick, and Maurice Wilkins. The fourth, the one who actually made the picture, was left out.

    Her name was Rosalind Franklin.” She should have been up there,” says historian（历史学家） Mary Bowden.” If her photos hadn't been there, the others couldn't have come up with the structure.” One reason Franklin was missing was that she had died of cancer four years before the Nobel decision. But now scholars（学者）doubt that Franklin was not only robbed of her life by disease but robbed of credit by her competitors

    At Cambridge University in the 1950s, Watson and Click tried to make models by cutting up shapes of DNA's parts and then putting them together. In the meantime, at King's College in London, Franklin and Wilkins shone X-rays at the molecule(分子). The rays produced patterns reflection the shape.

    But Wilkins and Franklin's relationship was a lot rockier than the celebrated teamwork of Watson and Crick, Wilkins thought Franklin was hired to be his assistant .But the college actually employed her to take over the DNA project.

    What she did was produce X-ray pictures that told Watson and Crick that one of their early models was inside out. And she was not shy about saying so. That angered Watson, who attacked her in return, “Mere inspection suggested that she would not easily bend. Clearly she had to to go or be put in her place.”

    As Franklin's competitors, Wilkins, Watson  and Crick had much to gain by cutting her out of the little group of researchers, says historian Pnina Abir-Am. In 1962 at the Nobel Prize awarding ceremony, Wilkins thanked 13 colleagues by name before he mentioned Franklin, Watson wrote his book laughing at her. Crick wrote in 1974 that  “Franklin was only two steps away  from the solution.”

    No, Franklin was the solution. “She contributed more than any other player to solving the structure of DNA . She must be considered a co-discoverer,” Abir-Am says. This was backed up by Aaron Klug, who worked with Franklin and later won a Nobel Prize himself. Once described as the “Dark Lady of DNA”, Franklin is finally coming into the light.

    Soft winds blew throughout the Windy City today. We welcomed the winds, as it was another hot day in Chicago. The wind blew, bringing us some coolness—and making the weather not that hot. But it was a beautiful summer day with a blue sky.

Chicago is a great city for eating, and we have enjoyed tasting the different foods. Last night, we tried one of the city's most famous foods: deep-dish pizza. Chicago claims credit for the rich and cheesy thick-crust pizza, covered with a sweet tomato sauce. We topped it with olives and green peppers.

       We were touring the city, mainly looking for delicious local foods. Today, we enjoyed a Polish specialty at lunch: Pierogis, an Eastern European dumpling-like dish, filled with foods like potatoes, cheese, mushrooms, cabbage and meat. Polish immigrants started settling in Chicago in the 1850s, and the city has one of the largest Polish communities in the U.S.

    We took a break from exploring the city to talk with some of you! Ashley and Caty logged onto the Internet for an on-the -road version of TALK2US. We spoke to an English teacher in Tokyo, Japan, and a graduate student in India.

Meanwhile, Adam searched for some locations around the city to shoot some video. He chose a spectacular spot: Navy Pier, Chicago's most-visited attraction. The winds from Lake Michigan keep visitors cool, and the view of the Chicago skyline never fails to impress. In fact, the view made all of us head over heels!

    Our time in Chicago has come to an end. Tomorrow, the true journey begins, as we pass through Illinois and into Missouri via Route 66. Springfield, the home of Abe Lincoln, and St. Louis, the “gateway to the West,” wait for us.

    It was close to midnight and it was unusual to see vehicles on the road. However, several trucks pulled over and workers silently unloaded camera equipment and cardboard boxes, and then carried them inside the Morgenson family home.

    What took place over the next eight weeks was inspired by a Hollywood movie called The Joneses about a family of marketers who move into a local neighborhood to sell their products secretly to their neighbors. The idea was to test the power of word-of-mouth marketing. By filming a 'rear' family in unscripted (无剧本的) situations, my team and I would document how the Morgensons' circle of friends responded to brands and products the Morgensons bought into their lives.

    With the help of 35 video cameras and 25 microphones hidden inside the furniture, the operation done secretly showed something shocking. The most powerful hidden persuader of all isn't in your TV or on the shelves of your supermarket. It's a far more important influence that's around you almost every waking moment: your very own friends and neighbors. There is nothing quite so persuasive as observing someone we respect or admire using a brand or product.

    Our analysis also found that the brands the Morgensons used went faster. About one third of the Morgensons' friends began promoting these same brands to their friends. We also found that the brands their friends were most likely to buy at the Morgensons' suggestion were the bigger and better-known ones. This proved my thoughts that traditional marketing and secret marketing work well together. The most persuasive advertising strategies are strengthened by word-of-mouth advertising.

    Whenever I meet with company managers, I tell them that the people who hold the real marketing power are mouse-clicking consumers and their wide circles of real-life friends. In other words, the people who hold the real power are us.

    My son has poliomyelitis (小儿麻痹)and he suffered from it a lot. When he was young, my wife and I took him to see so many doctors and got different kinds of treatments. But still, he couldn't walk like a normal kid.

    So he was laughed at by his peers for his walking style. His tears burnt our eyes like sulphuric acid (硫酸 ). Then, he became afraid of going to school. He wouldn't go anymore.

    One night, my wife had a breakdown and shouted at him, “I tell you, my kid, you might be like this forever. You are a freak in other people's eyes, and perhaps it would never change. But in my eyes, in your dad's eyes, you are not a freak! You are not! Even if you are, we love you and we will love you forever!” My son spoke nothing for two days. He didn't eat or sleep. We could read he was hurt. We hoped something wonderful would fall in our family. On the third morning, he struggled to walk to my car, with his school bag in his hand of course. He raised his head high and hugged me, saying “want to go to school. Nothing will beat me.”

    You know, from then on, he was never afraid of being mocked or despised anymore. If he couldn't avoid these looks, he chose to look at them in the eyes. Later, something nice really happened and my son went to MIT. When he was asked how he managed to bear the pressure, he said, “Because of my parents.”

    My dear fellows, if you care too much about how other people look at you or what their opinions are, you will never become what you want to be.

    Something's happening at the lowest point on our planet, some 1,388 feet below sea level. The Dead Sea, a salt lake close to Israel, Jordan and the West Bank, is shrinking at an alarming rate—about 3.3 feet per year, according to the environmentalist group EcoPeace Middle East.

    “It's not just like one country is punishing the Dead Sea; it's more like the whole region,” said photographer Moritz Küstner, who visited the area in February to work on his series “The Dying Dead Sea”.

    The Dead Sea needs water from the other natural sources surrounding it, such as the Jordan River basin. But around the 1960s, the courses of some water sources it relied upon were diverted. Israel, for instance, built a pipeline during that time so it could supply water throughout the country.

    Mineral extraction(提取)industries are another main reason why the water levels are declining, experts say. The Dead Sea's minerals have been popular for their medical power and can often be found in cosmetics(化妆品)and other consumer products.

    And then, of course, there's the Middle East's hot, dry climate, which makes it difficult for the lake to refill itself. Last year, Israel and Jordan signed a $ 900 million deal in an effort to stabilize the Dead Sea's water levels. It involves building a canal from the Red Sea to the Dead Sea which would be able to not only supply water to Israel and Jordan but also to pump much needed water—some 300 million cubic meters annually—into the Dead Sea.

    “This is the most important and significant agreement since the peace treaty with Jordan (in 1994),” said Silvan Shalom, Israel's energy and water resources minister at the time. Whether the canal—estimated to take three years to complete—will work out positively and as planned remains to be seen.

    For now, Küstner shows us that the Dead Sea remains very much a place of interest, with people from all over the world going there to swim in its salty waters.

    When my daughter Sara was in the fifth grade, she came to me with a problem." Marcy hates me！" she cried." Because Kathy is my friend, too. She wants me to be her friend and nobody else's. You talk to Marcy. You tell her that I want to be her friend, but I can have other friends, too！"

    Oh！I looked at her for a few moments，wondering how I got into this mess，when suddenly an idea came to me.

    Picking up two baskets from the living room, I explained, "When everyone is born, he or she has a little basket. This little one here is yours. The big one is mine. As you grow, so does the basket. You can see your little basket is inside mine because when you were born, there were too many things you couldn't do for yourself. I did everything you couldn't do on your own." She nodded.

    "Well, as you grew older and began to do some things on your own, I began placing a few more things in your basket. When you learned to tie your shoes, that went in your basket."

    She said softly, "I can tie my own shoes."

    "Right. As you grow older，there will be more and more things you must do on your own." As I spoke, I gradually took her basket out of mine and handed it to her." You will finally carry your own basket with things only you can do."

    She looked up at me and said," I understand. There are some things that I have to do for myself because they are in my basket."