Founded in 2010, Wall Street Daily is an independent, honest publisher of news and opinions regarding global financial markets. Its writing staff consists of gifted journalists and investment(投资) professionals. They provide original, practical ideas based on superior insights into value and where and how to find it. They learn facts others don't, they see things differently, and they do a better job to earn money. The following experts are most outstanding of them.

    The Winter Olympics are also called The White Olympics. At this time, many colorful stamps are published to mark the great Games. The first stamps marking the opening came out on January 25th,1932 in the United States for the 3rd White Olympics. From then on, publishing stamps during the White Olympics became a rule. During the 4th Winter Olympics, a group of stamps were published in Germany in November 1936. The five rings of Olympics were drawn on the front of sportswear. It was the first time that the rings appeared on the stamps of the White Olympics.

    In the 1950's, stamps of this kind became more colorful. When the White Olympics came, the host countries as well as the non-host(非主办方)countries published stamps to mark those Games. China also published four stamps in February 1980, when the Chinese sportsmen began to take part in the White Olympics.

    Japan is the only Asian country that has ever held the White Olympics. Altogether 14,500 million stamps were sold to raise money for this sports meeting.

    Different kinds of sports were drawn on these small stamps. People can enjoy the beauty of the wonderful movements of some sportsmen.

    A newly-published study has shown that loneliness can spread from one person to another, like a disease.

    Researchers used information from the Framingham Study, which began in 1948. The Framingham Study gathers information about physical and mental( 心 理 的 ) health, personal behavior and diet. At first, the study involved about 5,000 people in the American state of Massachusetts. Now, more than 12,000 persons are taking part.

    Information from the Framingham Study showed earlier that happiness can spread from person to person. So can behaviors like littering and the ability to stop smoking.

    University of Chicago psychologist (心理学家) John Cacioppo led the recent study. He and other researchers tried to show how often people felt lonely. They found that the feeling of loneliness spread through social groups.

    Having a social connection with a lonely person increased the chances that another person would feel lonely. In fact, a friend of a lonely person was 52% more likely to develop feelings of loneliness. A friend of that person was 25% more likely. The researchers say this shows that a person could indirectly be affected by someone's loneliness.

    The effect was strongest among friends. Neighbors were the second most affected group. The effect was weaker on husbands and wives, and brothers and sisters. The researchers also found that loneliness spread more easily among women than men.

    The New York Times newspaper reports that, on average, people experience feelings of loneliness about 48 days a year. It also found that every additional friend can decrease loneliness by about five percent, or two and a half fewer lonely days.

    Loneliness has been something to do with health problems like sadness and sleeping difficulties. The researchers believe that knowing the causes of loneliness could help in reducing it.

    The study suggests that people can take steps to stop the spread of loneliness. They can do this by helping individuals they know who may be experiencing loneliness. The result can be helpful to the whole social group.

    How would you like an easy way to earn $2,500? All you have to do is to sit around and wait for your meals. There's a catch, however. You have to stay in a chicken cage with a stranger for a whole week. There are no books or television or radio for a whole week. There are no books or television or radio for amusement. You can't leave until the week is up. And a camera will be recording your every move.

    Two people actually took the job. The idea came from Rob Thompson, a video artist. He wanted to make a film about the way animals are treated. His goal was to raise people's awareness of the living conditions of animals that are raised for food. He decided to pay $5,000 out of his own savings to two people who were willing to live like chickens for a week.

    To Rob's surprise, quite a few people answered his advertisement. He had interviews and selected Eric, a 24-year-old restaurant worker, and Pam, a 27-year-old chemist. The plan was for them to spend seven days together in a chicken cage that was six feet long and three feet wide. A camera would record their experience, which would take place in an art museum.

    The week was long and difficult. They slept on a hard wooden floor. They couldn't stand up without banging their heads. They ate mash(a kind of food for animals) and drink water from a garden hose-pipe(软管). Their only privacy was a toilet surrounded by a curtain. There were no sinks, mirrors, or toothbrushes in the cage. Their only inspiration was the two framed checks that hung on the wall outside the cage. Visitors who came here were warned, “Do not feed the humans.”

    Finally it was over, and Pam and Eric came out of the cage. They had survived the week, and they each had a $2,500 check in their hands. When Rob Thompson opened the cage, Eric came out, changed into clean clothes, and ate a chocolate bar right away. “It's great for me to be able to stand up.” he said. Pam just changed her clothes and left. After a week of visitors and reporters watching her, she didn't want to talk to anyone.

    Josh Katz works at the New York Times. His common job is to use information to tell interesting stories. In December 2013, Katz built a quiz on the Times website. It asked people about the words they used to describe things and events. It also asked how they pronounced common words. The quiz then used people's answers to decide where in the United States they were from.

    The quiz got more than 350, 000 results. Katz turned the results into a book. In Speaking American, he studies regional differences in how Americans talk.

"A lot of people's language shows who they are and where they are from, in a very personal way", Katz said.

Katz says people are often surprised to learn that the way they talk can show where they grew up. Most Americans don't realize they use regionalisms — or words and phrases specific to a particular part of the country. But just about everyone does. Almost every major U.S. city has a few unique terms. For example, in Philadelphia, Pennsylvania, the night before Halloween is known as Mischief Night. Anyone who calls it that is likely to be connected to the city.

    Katz himself was surprised by how many common words are regional. "There are a lot of words I use that I just thought were standard words," he says. "Then I found out some of these words were actually a product of my upbringing."

    For example, he says, "I thought everyone said 'sneakers' (运动鞋) and not 'tennis shoes'." But it turns out "sneakers" is connected mostly to the Northeast. That's where Katz is from.

    Some scholars think that language in the U.S. is growing more homogeneous (同类的). But Katz disagrees. "These regional differences are here to stay." he says.

    Not only are people still using common regionalisms, but there are new ones appearing all the time, according to Katz. There's no way to predict how language will change in the future. But Katz sees more changes coming. "The only sure thing about language is that it's going to keep moving." he says.

Have you ever heard of invisible ink? You may have seen it in movies. When light is shone on the paper which invisible ink is written on, you can read it!

As magical as this seems, the change in color is due to science. The ink is absorbing higher energy light and giving lower energy light. This reaction is an example of fluorescence (荧光) .

Light is a very broad term that describes a range of electromagnetic rays, including gamma rays, infrared light (红外光) and ultraviolet light. One part of the electromagnetic visible light is the colors that we can see with the human eye. These rays travel in curvy lines and each type of the ray is characterized by a different wave pattern. For example, Gamma rays have a shorter wavelength than infrared light. Shorter wavelength is connected with higher energy, so gamma rays also have more energy than infrared light.

Corals (珊瑚) are animals that live underwater. And the corals in the Red Sea exhibit fluorescence. Why is this happening? Scientists have shown that fluorescent objects absorb higher energy light and release lower energy light. Since the corals of the Red Sea are deep in the water where there is very little visible light, scientists theorize that these corals absorb ultraviolet light and produce visible light. They have special photo proteins, which enable them to change invisible light to visible light.

Fluorescence is not just used to create pretty colors. Corals have developed photo proteins for a biological reason. The visible light is used by algae (海藻) , which are eaten by the coral, to make food through photosynthesis (光合作用). The visual character of these photo proteins could also be used for biomedical research. They can highlight cells and cell structures under a microscope.

Isn't it amazing that a simple organism that we don't think very much of is not only grand but could also have so many potential uses in medical research!