It is probably the strangest sport anyone has ever invented. And at first sight, it looks like the easiest. Competitors have to do two things. The first is to stand still. The second is to place their hands anywhere on the body of a car, and keep it there.

    This is where things start getting difficult. Lots of people are doing the same thing. And the winner of the “handstand” contest is the person who can carry on doing it for the longest time. That person gets to own the car.

It still seems to be an easy thing to do. At the beginning it is. Anyone can stand still. But when the contest has been going for four or five days, standing still seems like the most difficult job in the world . And keeping the hand in place over this time becomes an act of serious attention. After a few days, the hand seems to belong to someone else—-someone who wants to go home and get some sleep.

    Competitors are allowed to take a five-minute break every hour to eat, drink or do whatever else is necessary. No one is allowed to lean on the car for support. Winners need to be able to show great powers of attention. They also need to be able to develop special skills.

    Maybe the popularity of the “handathon” is due to the fact that it is not necessary to be a trained athlete to enter. Competitors in the Longview handathon certainly don't seem to do much preparation. Most say they will prepare by “getting lots of sleep”. Others say they will “eat healthy food” or “pray for success”.  The whole event gives ordinary people the chance to do something interesting and win something in the end.

    Handathons are competitions, but there is little rivalry (竞争) between competitors. They help each other out and keep each other's spitits up. People who drop out early return with food, drink and encouragement.

    "Hey, Bruno! Great to see you again, man!" Zeca shouted. "Come over here and meet the boys." But before Bruno could move he was frisked by two guards. He cringed as the men searched his body for hidden guns, knives or other weapons.

    "He's clean, boss," one of the men shouted out.

    Zeca introduced all the members of his gang, including the man who worked inside the printer's who was going to steal the exams. He then explained all the details of the plan. It seemed foolproof and nothing could go wrong.

    They all shook hands and quickly left.

    Bruno's heart was beating fast. He was anxious to get away from the gang and phone Clara. He raced down the hill. Then he stopped at the bottom and looked behind him. It was clear, no one was following him. He took out his phone and called Clara.

    "Hey, Clara. Listen." He was out of breath, panting heavily. "Everything went according to plan. To my plan, of course, not Zeca's!" he added, laughing excitedly.

……

    "This is amazing!" the police officer said, smiling broadly, as he looked at Bruno and Clara, who were sitting in front of him at the police station. "Well done! How did you manage to come up with such a brilliant idea?"

    "Thanks. I guess it was kind of clever." Bruno answered, acknowledging the compliment with a polite smile. He felt slightly embarrassed. "Believe it or not, the idea just popped into my head while I was taking a shower. I remembered I saw an advert once on the Internet for special spy-camera sunglasses. They have a tiny, hidden, built-in video recorder. Here they're only used by detectives and law enforcement agencies, but anybody can buy them on the Internet."

    When Bruno talked to Clara before his meeting with Zeca's gang, they both agreed it would be wrong to steal the exams, and help Zeca sell them to other people. But Bruno had worked out an ingenious plan to dounle-cross Zeca and stay out of trouble himself.

    First of all, he had wisely agreed to go along with Zeca's plan, and go to the meeting with the gang of thieves. When he arrived at the hideout, they frisked him for hidden weapons, but no one ever imagined that Bruno was wearing sunglasses with a tiny built-in camera. Bruno had secretly videoed the entire meeting, making sure he had taken close-up shots of all the gang members. Their conversations with all the details of their plan had also been recorded.

    Then, as soon as he was sure that he wasn't being followed, he phoned Clara and together they went to the police with the camera and told them the whole story.

    "Thanks to this evidence we can finally catch Zeca and his entire gang red-handed," the police officer continued. "But we need you and Clara to help us. It's very important that you both continue to act as if nothing has happened. You must play along with whatever Zeca wants. We'll be following your every move from now on. Just do everything Zeca tells you to, OK?"

    The police then went to the printer's and spoke to the owner. He agreed to co-operate and they installed some hidden cameras there, too. The day of the theft they saw the thief copy the exam papers on Closed Circuit Television(闭路电视), but they did not arrest him yet.

    Then they waited until Zeca made the next move.

    Everywhere I look outside my home I see people busy on their high-tech devices, while driving, walking, shopping, even sitting in toilets. When connected electronically, they are away from physical reality.

    People have been influenced to become technology addicted. One survey reported that “addicted” was the word most commonly used by people to describe their relationship to iPad and similar devices. One study found that people had a harder time resisting the allure of social media than they did for sleep, cigarettes and alcohol.

    The main goal of technology companies is to get people to spend more money and time on their products, not to actually improve our quality of life. They have successfully created a cultural disease. Consumers willingly give up their freedom, money and time to catch up on the latest information, to keep pace with their peers or to appear modern.

    I see people trapped in a pathological(病态的) relationship with time-sucking technology, where they serve technology more than technology serves them. I call this technology servitude. I am referring to a loss of personal freedom and independence because of uncontrolled consumption of many kinds of devices that eat up time and money.

    What is a healthy use of technology devices? That is the vital question. Who is really in charge of my life? That is what people need to ask themselves if we are to have any chance of breaking up false beliefs about their use of technology. When we can live happily without using so much technology for a day or a week, then we can regain control and personal freedom, become the master of technology and discover what there is to enjoy in life free of technology. Mae West is famous for proclaiming the wisdom that “too much of a good thing is wonderful.” But it's time to discover that it does not work for technology.

    Richard Fernandez, an executive coach at Google acknowledged that “we can be swept away by our technologies.” To break the grand digital connection people must consider how life long ago could be fantastic without today's overused technology.

    When a leafy plant is under attack, it doesn't sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.

    Scientists have found that all kinds of plants give out VOCs when being attacked. It's a plant's way of crying out. But is anyone listening? Apparently. Because we can watch the neighbors react.

    Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch.

    In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do.

    Does this mean that plants talk to each other? Scientists don't know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to "overhear" the cry. So information was exchanged, but it wasn't a true, intentional back and forth.

    Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate (亲密的) than the world we can see and hear. Our senses are weak. There's a whole lot going on.

    ①An increasing number of young people tend to rent clothes recently. Clothing rental is a hot new industry and retailers are entering this in hopes of attracting newly conscientious shoppers. This past summer alone, Urban Outfitters, Macy's, Bloomingdale's, American Eagle, and Banana Republic have all announced rental services—a sure sign of changing times.

    ②But is renting fashion actually more environmentally-friendly than buying it, and if so, how much more? Journalist and author Elizabeth Cline explored into this question and she concluded that it's not as sustainable as it seems.

    ③Take shipping, for example, which has to go two ways if an item is rented—receiving and returning. Cline writes that consumer transportation has the second largest carbon footprint(碳足迹)of our collective fashion habit after manufacturing.

    ④She writes, "An item ordered online and then returned can emit(排放)20 kilograms of carbon each way, and up to 50 kilograms for rush shipping. By comparison, the carbon impact of a pair of jeans purchased in physical stores and washed and worn at home is 33.4 kilograms, according to a 2015 study by Levi's."

    ⑤Then there's the burden of washing, which has to happen for every item when returned, regardless of whether or not it was worn. For most rental services, this usually means dry-cleaning, a high-impact and polluting process. 70 percent of US dry cleaners used perchloroethylene, a carcinogenic(致癌的)air pollutant, which can produce harmful waste and air pollution .

    ⑥Le Tote is the only service that uses 'wet cleaning' for 80 percent of its items and strives to avoid dry cleaning unless absolutely necessary.

    ⑦Lastly, Cline fears that rental services will increase our appetite for fast fashion, simply because it's so easily accessible. There's something called ‘share-washing' that makes people engage in more wasteful behaviors precisely because a product or service is shared and thus is perceived as more eco-friendly.

    ⑧Renting clothes is still preferable to buying them cheap and pitching them in the trash after a few wears, but we shouldn't let the availability of these services make us complacent(自鸣得意的). There's an even better step --and that's wearing what is already in the closet.

Biologists from the John Innes Centre in England discovered that plants have a biological process which divides their amount of stored energy by the length of the night. This solves the problem of how to portion out (分配) energy reserves during the night so that the plant can keep growing, yet not risk burning off all its stored energy.

While the sun shines, plants perform photosynthesis (光合作用). In this process, the plants change sunlight, water and carbon dioxide into stored energy in the form of long chains of sugar, called starch (淀粉). At night, the plants burn this stored starch to fuel continued growth.

"The calculations are precise so that plants prevent starvation but also make the most efficient use of their food," said study co-author Alison Smith. "If the starch store is used too fast, plants will starve and stop growing during the night. If the store is used too slowly, some of it will be wasted. "

The scientists studied the plant Arabidopsis, which is regarded as a model plant for experiments. To give the plants some math tests, the biologists let night arrive unexpectedly early or late for them.

During one of the exams, they shut off the lights early on them that had been grown with twelve-hour days and nights. Putting them into darkness after only an eight-hour day means they didn't have time to store as much starch as usual. And this forced the plants to adjust their normal nightly rhythm.

Amazingly, even after this day length trick, the plants did very well in their exams and ended up with just five percent of starch left over at the end of the night. They had neither starved, nor stored starch that could have been used to fuel more growth.

The authors suggested that similar biological calculators may explain how a migratory bird, the little stint, can make a five-thousand-kilometer journey to their summer habitat in the Arctic and arrive with enough fat reserves to survive only approximately half a day more, on average.

The results of the study were published in e Life.