Each year, we are exposed to ten thousand ads on average. They try to sell us their products by using beautiful art, videos, images or slogans that are catchy. The most famous companies have highly popular logos that can be recognized by almost everybody. For those of you who have seen the movie Finding Forrester, there is that scene where Jamal walks up to some guy with a BMW and asks him what the car logo means. The man did not know the answer and since that day, whenever I see a famous company logo I try to find the meaning of it.

    Many think the horse on the Ferrari logo represents the horsepower of the cars they manufacture. The story behind it is far more interesting. During World War I, a pilot, Count Francesco Baracca, painted the horse on his airplane to bring him luck. He had it on his plane because it was the logo of his squadron（空军中队）. Baracca's mother then convinced Enzo Ferrari to put the logo on his racing cars in the early 1930's to bring good luck to the drivers. The logo then stayed the same ever since. The yellow on the background represents the birthplace of Enzo Ferrari.

    Starbucks started in 1971, in Seattle. The mermaid（美人鱼）represented on the logo is now known by any coffee drinker. It is a mythological sea creature with the look of a female, the only difference being that they have a tail of a fish. The reason why Starbucks incorporated one in their company logo is that it was believed that mermaids used to sing to sailors in order to make them walk away from their ship or to ground their ships. In the 1500s, spices, tea and coffee were popular merchandise to trade. So the mermaid in the logo of Starbucks is the one that "brings" coffee and tea to the stores.

    Some of the best research on daily experience is rooted in rates of positive and negative interactions, which has proved that being blindly positive or negative can cause others to be frustrated or annoyed or to simply tune out.

    Over the last two decades, scientists have made remarkable predictions simply by watching people interact with one another and then scoring the conversations based on the rate of positive and negative interactions. Researchers have used the findings to predict everything from the likelihood that a couple will divorce to the chances of a work team with high customer satisfaction and productivity levels.

    More recent research helps explain why these brief exchanges matter so much. When you experience negative emotions as a result of criticism or rejection, for example, your body produces higher levels of the stress hormone, which shuts down much of your thinking and activates (激活) conflict and defense mechanisms (机制). You assume that situations are worse than they actually are.

    When you experience a positive interaction, it activates a very different response. Positive exchanges increase your body's production of oxytocin, a feel-good that increases your ability to communicate with, cooperate with and trust others. But the effects of a positive occurrence are less dramatic and lasting than they are for a negative one.

    We need at least three to five positive interactions to outweigh every one negative exchange. Bad moments simply outweigh good ones. Whether you're having a conversation, keep this simple short cut in mind: At least 80 percent of your conversations should be focused on what's going right.

    Workplaces, for example, often see this. During performance reviews, managers routinely spend 80 percent of their time on weaknesses and “areas for improvement”. They spend roughly 20 percent of the time on strengths and positive aspects. Any time you have discussions with a person or group, spend the vast majority of the time talking about what is working, and use the remaining time to address weaknesses.

    The weather is very important to farmers. The calendar might say “August”， but the weather's more like October. For some farmers the cool weather is a good thing. For others, it's a cause for concern.

    At Apple Hill, the cooler weather was giving the Boeger Winery a chance to concentrate on bottling instead of picking. “Things were really maturing, it has just been a welcome relief to have more time to prepare.” said Greg Boeger of Boeger Winery.

    But down in the Delta, the earlier hot weather has them two weeks ahead of schedule. Their harvest actually started on Tuesday, and this cooling trend is a worry. There have been no problems yet, but for each of the last two years heavy rain right after Labor Day was a problem, one that Don Pylman would not like to see repeated.

    “If it doesn't start raining, we're in good shape，” said Pylman. “If the sun comes out and clears up we can get right back to work, but if we do get rain, the rots will start.”

    The kind of grape makes a difference as well. Thin­skinned grapes like the chardonnay variety are much more sensitive to rain than some of the others. They're also more difficult to dry off.

    Teachers say the digital age has had a good influence and a not-so-good influence on this generation of American teenagers. More than 2,000 middle and high school teachers took an online survey. Researchers also spoke with teachers in focus groups.

    Three-quarters of the teachers said the Internet and digital search tools have had a "mostly positive" effect on their students' research habits and skills. But 87 percent agreed that these technologies are creating an "easily distracted generation with short attention spans (持续时间)". And 64 percent said the technologies "do more to distract students than to help them academically(学业上)". Many students think "doing research" now means just doing a quick search on Google.

    The Pew Internet Project did the survey with the College Board and the. National Writing Project. Most of the teachers came from Advanced Placement classes, which provide college-level work for high school students.

    Judy Buchanan is director of the National Writing Project and a co-author of the report. Ms. Buchanan says digital research tools are helping students learn more, and learn faster. Teachers really welcome these tools because they are ways to make some of learning exciting and engaging. Young people welcome these tools. And the goal is to really help them become creators of content, and meaningful content, and not just sort of consumers.

    But one problem the survey found is that many students are lacking in digital literacy. In other words, they trust too much of the information they find on the Internet. Another problem the survey found is blamed on something that might not seem like a problem at all: being able to quickly find information online.

    Teachers say the result is a reduction in the desire and ability of their students to work hard to find answers. They say students are depending too much on search engines and do not make enough use of printed books or libraries. Many teachers are also concerned that the Internet makes it easy for students to copy work done by others instead of using their own abilities.

    Older women who walk a little over three kilometers each day might live longer than less active women of the same age, a new study suggests.

    Many Americans hoping to stay healthy set a daily goal of 10, 000 steps, or about eight kilometers. They often have this goal because they are wearing electronic devices which set that target, note researchers in the United States. Their findings appeared recently in the publication JAMA Internal Medicine.

    But it is not clear how much intensity(强度)or speed matter when counting the health benefits of every step, the researchers write. They add that 10,000 steps per day might not be the right goal for everyone.

    For the study, researchers observed 17,000 women, all in their early 70s. They asked the women to wear accelerometers for at least four days. Accelerometers are small devices that measure the number of steps and the intensity of movement. The researchers followed up with the women much later, around 4. 3 years later, on average. Since the beginning of the study, 504 women had died. Compared to women who took no more than 2, 718 steps daily, the women who took at least 4,363 steps per day were 41 percent less likely to die.

    "Even a modest amount of steps is associated with lower death rates," said I-Min Lee, the lead writer of a report on the study. "The rate of stepping did not matter in these older women: it was the number of steps that mattered.

    The study had a few limitations. For example, the researchers only measured women's movements once, at the start of the study period. It is possible that the women's behaviors changed over time. Still, the results are "good news for older adults who may have difficulty walking at faster paces, "said Keith Diaz, a researcher at Columbia University. He was not involved in the study.

    "Any walking is better than nothing," Diaz said by email. "With even small amounts of walking, your risk of death will be sharply reduced "For those who have difficulty walking, other research shows that any form of aerobic activity provides health benefits," he added. "Swimming, bicycling or any form of activity that is continuous in nature will provide health benefits.

    Attitudes toward new technologies often fall along generational lines. That is, generally, younger people tend to outnumber older people on the front end of a technological change. It is not always the case, though. When you look at attitudes toward driverless cars, there doesn't seem to be a clear generational divide. The public overall is split on whether they'd like to use a driverless car. In a study last year, of all people surveyed, 48 percent said they wanted to ride in one, while 50 percent did not.

    The fact that attitudes toward self-driving cars appear to be so steady across generations suggests how transformative the change to driverless cars could be. Not everyone wants a driverless car now-and no one can get one yet—but among those who are open to them, every age group is similarly involved.

    Actually, this isn't surprising. Whereas older generations are sometimes reluctant to adopt new technologies, driverless cars promise real value to these age groups in particular. Older adults, especially those with limited mobility or difficulty driving on their own are one of the classic use-cases for driverless cars.

    This is especially interesting when you consider that younger people are generally more interested in travel-related technologies than older ones.

    When it comes to driverless cars, differences in attitude are more pronounced based on factors not related to age. College graduates, for example, are particularly interested in driverless cars compared with those who have less education: 59 percent of college graduates said they would like to use a driverless car compared with 38 percent of those with a high-school diploma or less.

    Where a person lives matters, too. More people who lived in cities and suburbs said they wanted to try driverless cars than those who lived in rural areas.

    While there's reason to believe that interest in self-driving cars is going up across the board, a person's age will have little to do with how self-driving cars can become mainstream. Once driverless cars are actually available for sale, the early adopters will be the people who can afford to buy them.