Want to add some hours to your day? Ok,you probably can't change the fabric of time. But a new study suggests that theway you feel about your goal can change your concept of time and that somesimple strategies could make you feel less rushed.

In a series of experiments, JordanEtkin, a professor of marketing at Duke, and her co-authors, LoannisEvangelidis and Jennifer Aaker, looked at what happens when people see theirgoals as conflicting with one another. In one, they asked some participants tolist two of their goals that they felt were in conflict, and others simply tolist two of their goals. Those who were forced to think about conflicting aimsfelt more time pressure than those who weren't. In another experiment, the researchersgave participants a similar prompt regarding goal conflict, but this timemeasured their anxiety levels as well as their attitudes toward time. Theyfound that participants who thought about conflicting goals had more anxietythan those who didn't, and that this, in turn, led to feelings of being shorton time.

"Stress and anxiety and timepressure are closely linked concepts," D. Etkin explained. "When wefeel more stress and anxiety in relation to our personal goals, that manifestsas a sense of having less time."

Technological advances that allow peopleto do lots of things at once may increase the fe'eling of goal conflict, shesaid."I think the easier it is for us to try to deal with a lot of thesethings at the same time," She said"the more opportunity there is for us to feel this conflictbetween our goals."She isn't the first to suggest that actual busynessisn't the only thing that can make us feel busy At the Atlantic, Derek Thompson wrote that "as a country, we'reworking less than we did in the 1960s and 1980s." He offered a number ofpossible reasons some Americans still feel so overworked, including "thefluidness ffl±) of work and leisure." As he put it:"The idea thatwork begins and ends at the office is wrong. On the one hand, flexibility isnice, On the other, mixing work and leisure together creates an always-onexpectation that makes it hard for white-collar workers to escape the shadow ofwork responsibilities."

And Brigid Schulte writes in her 2014book Overwhelmed: How to Work, Love, and Play When No One Has the Time thatsome researchers believe "time has no sharp edges. What often matters morethan the activity we're doing at a moment in time, they have found, is how wefeel about it.Our concept of time is indeed,our reality.”

Fortunately, Dr. Etkin and her team didfind ways of making us feel better about time—or, at least, of reducing thenegative influence of goal conflict. When participants performed a breathingexercise that reduced their anxiety, the impact of such conflict on theirperception of time was less pronounced. Reframing anxiety as excitement (byreading the phrase "I am excited!" aloud several times) had a similareffect.

Breathing and reframing may not solveeveryone's time problems—Ms. Schulte writes that some Americans are indeedworking more than they used to. She cites the work of the sociologists MichaelHout and Caroline Hanley, who have "found that working parents combinedput in 13 more hours a week on the job in 2000 than they did in 1970. That's676 hours of additionally paid work a year for a family. And that's on top ofall the unpaid hours spent caring for children and keeping the housetogether." Sometimes, we may feel short on time because we actually are.However, Dr. Etkin believes her findings suggest we may "have the abilityto influence our experience of time more than we think we do."

"We're all going to have times inour lives when our goals seem to be in more conflict than others," shesaid. But with techniques like the ones her team tested, "we really canhelp ourselves feel like we have more time."

    The African elephant, the largest land animal remaining on earth , is of great importance to African ecosystem(生态系统). Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant-eater, it largely shapes the forest-and-savanna(大草原)surroundings in which it lives, therefore setting the terms of existence for millions of other animals that live in its habitat(栖息地).

    It is the elephant's great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas. In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.

    Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well.

    What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.

    The stories we share with one another are important. They show wisdom and provide inspiration. They are important to our development. But sometimes people choose not to tell.

    Consider the negative effects of not sharing a story in the news: People are wondering if public health officials are holding back too much information about the recent outbreak of Ebola.

    There is a danger in holding back stories that ought to be told. Bobette Buster said it like this, “The fact is that history has shown us that stories not told can become like a dangerous genie (妖怪) left in a bottle. When they are finally uncorked, their power to destroy is set free.”

    There are a number of reasons why we hide parts of our story: they often show our weaknesses or expose our disadvantages; they require courage and strength to share; and of course, there are some stories that should be kept secret—especially those that embarrass someone else.

    Most of us have two selves: the one we display on the outside and the one we actually are on the inside. And the better we get at hiding the stories that show our true selves, the more damage we may be causing to ourselves and to others.

    Honesty and openness is important: It proves we are trustworthy. It displays we are human. We are not perfect or better. It highlights the importance of hard work and personal development. Hard work may not allow us to overcome our disadvantages completely. But with hard work, we do not have to be limited to our mistakes.

    Does this mean we admit every weakness, every disadvantage, and every secret regret to everybody we meet? No, of course not. There is a time and a place and a certain level of relationship necessary for some stories to be told in an appropriate manner.

A hybrid electric vehicle (混合动力车) or HEV is a vehicle driven by the combination of petrol engine and electric motor. Terrence has been driving a HEV for five years. He really doesn't understand why more people aren't accepting them. "I probably spend about $ 7 a day on petrol," the taxi driver told news. com. au. In his previous conventional vehicle Terrence said he was spending up to $ 30 a day on petrol, meaning he saves almost $ 6000 every year.

The Toyota spokesman said this was quite a high saving and official tests estimate (估计) an average driver would only save about 33 percent off their current bill. This means a driver paying $ 30 a day on petrol would see their bill drop to about $ 20 using the hybrid. "A taxi driver that drives in built-up areas and spends little time on highways will notice a higher fuel saving," he said. "Low speeds allow the electric motors to be used more and the petrol engine used less."

While some people are skeptical about how reliable hybrids are, Terrence said he had never run out of power. His Camry cost about $ 34,000 and so after five years, it's nearly paid for itself. "For cab drivers, it's a real advantage because of the cost-effectiveness," he said. Terrence has no complaints about the car. "I love it, the calm and quietness of it, the simplicity of it—you just jump in and go. The maintenance（保养）is really low. But the only difficulty is finding someone to service the car as there are not many experienced mechanics（机修工）."

Terrence said it's "extraordinary" that more drivers aren't buying more hybrid electric vehicles and that governments are not encouraging this more. "I think people have a view that you have to plug it in, which is not true. A lack of information about the cars may be stopping people from taking the plunge. It's not promoted at all for the public to understand—it's simplifying the actual owning of a car—you don't have to do so many things to own it and run it, it's just so much simpler. Why wouldn't the government promote such a thing?"

    Archerfish(射水鱼), a species famous for spitting (吐) water to shoot insects out of the air, can recognize one human face from another.

    In the laboratory, instead of shooting insects, the fish were taught to spit at pictures of human faces showed on a computer screen outside their aquarium. The fish were first introduced to two faces, and taught to spit at one of them in exchange for a food reward. The researchers then tested whether the fish would recognize and spit at the face they had learned from among 44 new ones. And they were right more than 80% of the time.

    To the researchers' surprise, even when they did that with faces that were in black and white, the fish were still able to find the face they were trained to recognize.

    Telling one human face from another is a surprisingly difficult task. As we all have two eyes above a nose and a mouth, doing so depends on recognizing some extremely small differences.

    “It has been supposed that this task is so difficult that it can only be completed by higher animals, which have a large and complex brain,” said Newport, whose study was published in the journal Scientific Reports. “But the archerfish were able to do this without having a neocortex, the most recently developed part of the brain. In humans, the neocortex governs our sense and language.”

    “Fish have a simpler brain than humans and they don't have the section of the brain that humans use for recognizing faces,” Newport said. “Even though, many fish show amazing visual (视力的) behaviors and therefore make the perfect subjects to test whether simple brains can complete complex tasks.”

    While elephants born without tusks (长牙)are not unheard of，they normally form just 2 to 6 percent of the population. However, that is not the case at Mozambique's Gorongosa National Park, where an astonishing 33 percent of female elephants born after the country's civil war ended in 1992 are tuskless. While that may appear to be just a coincidence, Joyce Poole, an elephant behavior expert, has another theory. The researcher thinks we may be witnessing unnatural evolution of the species due to the constant hunting of elephants for valuable ivory.

    Poole says before the country's 15-year-long civil war, the 100,000—acre park was home to over 4,000 elephants. However, by the time the conflict ended in 1992, about 90 percent of them had been killed for ivory to help finance weapons (武器)and meat to feed the soldiers. Of the less than 200 survivors, over 50 percent of adult females had no tusks. Therefore, it is not surprising that the park's tuskless elephant population has grown greatly.

    This is not the first time researchers have observed a great change in the population of elephants. At Zambia's South Luangwa National Park and Lupande Game Management Area ， areas which were heavily hunted in the 1970s and 1980s, 35% of elephants 25 years or older and 13% of those younger than 25 are now without tusks. A 2008 study published in the African Journal of Ecology found that the numter of tuskless females at the Ruaha National Park in Tanzania went from 10.5 percent in 1969 to almost 40 percent in 1989, largely due to illegal hunting for ivory.

    The recent ban on ivory in both the US and China should help get rid of, or at least reduce, elephant hunting. However, scientists are not sure how long it will take for elephants with a higher rate of tuskless females, to change the trend.