Like many thickly populated urban neighborhoods, Lincoln Park also has rats. A lot of rats. “Every night when I walk down the sidewalk, I see rats, ” says 36-year-oId Kelly McGee, who has come to accept this aspect of city living. “It's an urban area; I don't know what else we can expect.”

McGee lives just down the block from the old Children's Memorial Hospital, which is about to be torn down as part of a massive redevelopment project. “Construction all over the city often disturbs rats that are living underground,” says Lincoln Park's City Council representative, Alderman Michele Smith. “Every developer has to do active rat reduction on site, ”Smith says. Already, there are poisonous and inviting food boxes all around the old hospital complex. But the developer of the hospital site still warned residents in a recent community meeting that when digging begins later this month, the rat problem could be awful.

Victoria Thomas, who lives a few miles north of Lincoln Park in Chicago's Lake View neighborhood, says she tried everything from underground fencing to poison traps to wipe out rats, but nothing worked until she got some cats. From the first day she got the cats, Thomas says the rats started to disappear.

“The cats will kill off a great deal of the initial population of the rats, ”says Paul Nickerson, who manages the Cats at Work program for Tree House Humane Society. “And through spreading their pheromones, a chemical produced by an animal, the cats will keep other rats from filling their absence.” Nickerson says that is what makes the cat program so successful in keeping rats away for the long term. ” The rats are far from stupid. They smell the cats' pheromones so they'll stay out of the cats' territory(领域).”

    After Smith highlighted the program in a recent newsletter, Nickerson and Tree House Humane Society have been getting lots of calls from people seeking their own cat colonies. That means a lot more wild cats that might otherwise be killed out of pity will be cared for while doing something that they love: hunting rats.

    During the cold winter days, there are some interesting festivals in the world. Look at the following ones.

Harbin Ice and Snow Festival

Place: China

Time: January 5 to February 5

People build incredible things out of ice and snow, decorating them with lights.

The Carnival of Venice

Place: Italy

Time: between February and March

One of the most beautiful festivals in the world, people wear masks and elaborate costumes to hide differences among classes, and there an, contests for the best costumes.

Holi Festival

Place: India

Time: late February/March, on, the last full moon day and Sikhs, in India, Nepal, and Sri Lanka celebrate the main day of this incredibly fun 16 -day festival by throwing colored powder and water at each other.

Sundance Film Festival

Place: Utah, the US

Time: end of February

The largest independent film festival in the US. Watch both feature films and shorts. You need to buy a ticket.

    Tu Youyou, an 84-year-old female（女性）scientist, became the first Chinese to win a Nobel Prize in science on Oct 5. Before that, she ever won the 2011 Lasker Award for finding out artemisinin (Qinghaosu), which saved millions of lives. She was grateful（感激的）for the Lasker prize, but said, “It is just a scientist' duty. I will go on fighting for the health of all humans.”

    Tu kept her work in the 1960s and 1970s. In that age, Malaria (疟疾) could took away people's health. Scientists all over the world had already tried over 240, 000 times but failed. Tu Youyou, a member of the Academy of Traditional Chinese Medicine, Beijing, began to study Chinese herbs.

    Before 2011, people didn't know Tu very much. Many friends played jokes with her “the Professor of Three None's” : no degree（学位）, no study experience abroad, not a member of any Chinese national colleges. But she is hard-working. She read a lot of traditional Chinese medicine books and did a lot of researches on the disease.

    In February, 2012, Tu was named National Outstanding Females (One of the Ten) Tu is now a model of Chinese medical workers.

    Why is pink or purple a color for girls and blue or brown for boys?

    The answer depends largely on cultural values as well as personal experiences. To the Egyptians, green was a color that represented the hope and joy of spring, while for Muslims, it means heaven. Red is a symbol of good luck in many cultures. In China, children are given money in a red envelope to bring good fortune in the New Year. For many nations, blue is a symbol of protection and religious beliefs. Greek people often wear a blue necklace hoping to protect themselves against evils（灾祸）.

    People's choice of colors is also influenced by their bodies' reactions （反应）toward them. Green is said to be the most restful color. It has the ability to reduce pain and relax people both mentally and physically. People who work in green environment have been found to have fewer stomach aches.

    Red can cause a person's blood pressure to rise and increase people's appetites（食欲）. Many decorators will include different shades of red in the restaurant. Similarly, many commercial websites will have a red “Buy Now” button because red is a color that easily catches a person's eye.

    Blue is another calming color. Unlike red, blue can cause people to lose appetite. So if you want to eat less, some suggest that eating from blue plates can help.

    The next time you are deciding on what to wear or what color to decorate your room, think about the color carefully.

    Why do some people live to be older than others? You know the standard explanations: keeping a moderate diet, engaging in regular exercise, etc. But what effect does your personality have on your longevity（长寿）? Do some kinds of personalities lead to longer lives? A new study in the Journal of the American Geriatrics Society looked at this question by examining the personality characteristics of 246 children of people who had lived to be at least 100.

    The study shows that those living the longest are more outgoing, more active and less neurotic (神经质的) than other people. Long-living women are also more likely to be sympathetic and cooperative than women with a normal life span. These findings are in agreement with what you would expect from the evolutionary theory: those who like to make friends and help others can gather enough resources to make it through tough times. Interestingly, however, other characteristics that you might consider advantageous had no impact on whether study participants were likely to live longer. Those who were more self-disciplined, for instance, were no more likely to live to be very old. Also, being open to new ideas had no relationship to long life, which might explain all those bad-tempered old people who are fixed in their ways.

    Whether you can successfully change your personality as an adult is the subject of a longstanding psychological debate. But the new paper suggests that if you want long life, you should strive to be as outgoing as possible.

    Unfortunately, another recent study shows that your mother's personality may also help determine your longevity. That study looked at nearly 28,000 Norwegian mothers and found that those moms who were more anxious, depressed and angry were more likely to feed their kids unhealthy diets. Patterns of childhood eating can be hard to break when we're adults, which may mean that kids of depressed moms end up dying younger. Personality isn't destiny, and everyone knows that individuals can learn to change. But both studies show that long life isn't just a matter of your physical health but of your mental health.

    At times we all get angry when we are driving. It might be because we are stuck in a traffic jam or stuck behind a very slow driver. It might be because we think another driver has done something very stupid and dangerous. Whatever the reason, it seems that getting angry in a car is something which happens more and more often and there is now a special term for it: "road rage". Some experts even think that road rage is a kind of mental illness! How can we recognize this "illness" of road rage?

There are two kinds of road rage: aggressive driving and aggressive reactions to the way other people are driving. Aggressive driving can take different forms:

    Driving much faster than the speed limit.

    Increasing your speed very quickly.

    Driving very close behind the car in front and sounding the horn or flashing the headlights.

    Changing lanes very suddenly and blocking another car.

    Moving into a parking space where another ear is trying to park.

There are also different reactions to the way other people are driving. These include:

    Making rude signs at people.

    Shouting at people and threatening them.

    Deliberately driving into another person's car.

    Hitting somebody.

    Using a weapon such as a baseball bat, or even a gun or a knife.

    Road rage is certainly not a joke. There have been incidents of road rage which have led to serious injuries and even murder. Experts think that one reason for road rage is that films show a lot of examples of fast and aggressive driving such as car chases where this kind of driving seems to be positive.

    Experts also think that the punishments for dangerous driving are not serious enough. Experience shows that driving problems can be controlled，but it takes a long time. In the UK in the last 30 years, he police have been quite successful in reducing the number of people who drink and drive. They are now working to stop people using mobile phones when they are driving. Let's hope they can have the same success with road rage.