Back in 2003 an 86-year-old man drove his Buick through a crowded farmers' market. Nine people were killed. More than fifty-four people were hurt, fourteen with serious injuries. When he finally stopped, the 86-year-old man got out his car and screamed at people to get out of the way. No alcohol or drugs were found in his system. Apparently, he was just old and confused.

    This is a frightening accident, and it is not a rare one. There are many examples of elderly drivers driving into swimming pools, houses, storefronts, or worse.

    In our teenage years, we all heard “driving is not a right; it's a privilege.” That is still true, and there comes an age when driving is no longer a privilege that can be allowed. After a certain age, eyesight and dementia(痴呆) are very serious concerns. Undoubtedly, these age-related problems affect some older adults' driving ability. By the time a person is between eighty-five and ninety years old, his or her driving privilege should be examined.

    Licensing laws vary greatly from state to state, and it's time for a national law on the maximum age limit for driving. The motivation for this law is safety. Another option is to start with laws that ban anyone over the age of eighty-five from driving after sundown, because driving conditions are not as safe as daylight hours. Still another option that may allow elderly drivers to continue driving could be new technology like a voice warning system that cautions drivers on busy streets or at traffic lights. Finally, since there are laws against driving under the influence of alcohol and drugs, shouldn't some prescription drugs also be included? The average age of 85-year-old is undoubtedly taking at least one prescription drug daily.

    The thought of an 86-year-old driver with failing eyesight running down the road in a two-ton piece of metal is unsettling to us all. Driving at an advanced age is not only challenging for the elderly drivers, but also it's dangerous for the rest of us.

    Have you ever felt like you are not given the kind of respect you deserve? In one way or another, all of us have felt this way. We've yearned（渴望）to be looked at as an authority, someone people look up to and trust. We're not taught in school how to do this and our parents didn't tell us the secret on how to establish our authority. It's something we learn and gain by ourselves. And the answer is as simple as changing our mindset. What? No way! Oh but it is. People tend to underestimate the power of the mind. Change your game by changing your mind.

    Take time to look back and think about people in your life who are an authority or a leader at work, who has more credibility（可信度）than you or who you look up to and inspires you. They are up there not for the reasons you think. If you really think about it, they aren't the smartest of the bunch, not the most educated, and neither are they the best. And in no way do they even call themselves an expert. Instead, they are up there because they are great teachers and advocates（支持者）for the success of their customers or employees.

    Let's take Richard Simmons for example. This famous fitness personality has been a household name ever since he started gaining popularity during the first few years of his career. Stop and think, though, do you really think he is the best person to really get people into shape? Is he the Einstein of fitness and nutrition? Or does he even call himself a master of his craft? Of course not. People look up to him and give him authority because he is a great educator. Instead of sharing information that's far too complicated to understand, he figures out what your problems are and finds out a way to fix them. He even has social media that he updates on a regular basis with topics that are helpful and easy to understand for his fans and followers.

    Depending on the field you're in, you can share with people things you know and that you think they will want to know as well. If you're a nurse, for example, you can make a blog post for common health problems and quick remedies（治疗方法）people can do at home. Remember, the simpler you can make it, the better. People will trust you completely if you give them easy solutions. Like Richard, you'll soon be the expert you'll want to listen to. You can be an advocate also by showing people that you have their best interests at heart. You can also start up conferences to take up people's concerns and try to deal with them the best way that you can.

    So, how will you be viewed as an authority? Make that mind shift .Find out what concerns and troubles your target. Give solutions. Show that you care. And help them climb up that ladder of success. Ladies and gentlemen, that's how it's done.

    The annual World Economic Forum took place in Davos, Switzerland, in Jan. 23-26, 2018. What did Chinese entrepreneurs （企业家）speak in the forum? Are there some quotable quotes for you?

    Jack Ma, founder and executive chairman of Alibaba Group

    "I think globalization cannot be stopped — no one can stop globalization, no one can stop trade. If trade stops, the world stops. Trade is the way to dissolve (结束) the war not cause the war," said Ma in Davos, "Google, Facebook, Amazon and Alibaba — we are the luckiest companies of this century. But we have the responsibility to have a good heart, and do something good."

    Richard Liu, founder and chief executive officer of JD

    "Business is not only a way to make money but also a way to contribute yourself, to help people," Liu said in a speech in Davos. "How can we face the fractured (分化的) world? That's the topics of the Davos this year. I think a very important thing in business is cooperation. If we can unite, work together, if we work very closely, I think we can bring more hope to the people and we can build more trust between the people, countries and companies and partners," he said.

    Jane Sun, CEO of Ctrip

    "Tourism is a sunrise industry. Since I entered Ctrip, every year there are new comers, which, first of all, shows that tourism is booming." Sun told Sina.com in Davos. "We invested heavily in ABC. A refers to AI, B is big data, and C is cloud computing. As we continue to expand overseas, these three will be very good weapons for us. So we think those mean opportunity," she said.

    Hu Xiaoming, president of Aliyun

    "In 2018, people will see the development in various countries more closely connected with cloud computing. More manufacturing enterprises and financial institutions will start to use ‘cloud', and cloud computing will increase the efficiency of technology and finance," Hu told Xinhua in Davos.

    At the age of 14, James Harrison had a major chest operation and he required 13 units (3.4 gallons) of blood afterwards. The blood donations saved his life, and he decided that once he turned 18, he would begin donating blood as regularly as he could.

    More than 60 years and almost 1,200 donations later, Harrison, whose blood contains an antibody(抗体) that has saved the lives of 2.4 million babies from miscarriages (流产), retired as a blood donor on May 11. Harrison's blood is valuable because he naturally produces Rh-negative blood, which contains Rh-positive antibodies. His blood has been used to create anti-D in Australia since 1967.

    "Every bottle of anti-D ever made in Australia has James in it," Robyn Barlow, the Rh program director told the Sydney Morning Herald. "It's an amazing thing. He has saved millions of babies. I cry just thinking about it." Since then, Harrison has donated between 500 and 800 milliliters of blood almost every week. He's made 1,162 donations from his right arm and 10 from his left.

    "I'd keep going if they let me," Harrison told the Herald. His doctors said it was time to stop the donations — and they certainly don't take them lightly. They had already extended the age limit for blood donations for him, and they're cutting him off now to protect his health. He made his final donation surrounded by some of the mothers and babies who his blood helped save.

    Harrison's retirement is a blow to the Rh treatment program in Australia. Only 160 donors support the program, and finding new donors has proven to be difficult. But Harrison's retirement from giving blood doesn't mean he's completely out of the game. Scientists are collecting and cataloging his DNA to create a library of antibodies and white blood cells that could be the future of the anti-D program in Australia.

    Alice Moore is a teenager entrepreneur(创业者), who in May 2015 set up her business AilieCandy. By the time she was 13, her company was worth millions of dollars with the invention of a super-sweet treat that could save kids' teeth, instead of destroying them.

    It all began when Moore visited a bank with her dad. On the outing, she was offered a candy bar. However, her dad reminded her that sugary treats were bad for her teeth. But Moore was sick of missing out on candies. So she desired to get round the warning, "Why can't I make a healthy candy that's good for my teeth so that my parents can't say no to it?" With that in mind, Moore asked her dad if she could start her own candy company. He recommended that she do some research and talk to dentists about what a healthier candy would contain.

    With her dad's permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth-friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria.

    Moore then used her savings to get her business off the ground. Afterwards, she and her father secured their first business meeting with a supermarket owner, who finally agreed to sell Moore's product—CanCandy.

    As CanCandy's success grows, so does Moore's credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she's also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile.

    Meanwhile, with her parents' help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasn't driven primarily by profit. Moore wants to use her unique talent to help others find their smiles. She donates 10% of AilicCandy's profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.

People have long watched moths （飞蛾） and other flying insects flock to streetlamps, lights and flames. These insects appear attracted by the light. But a new study suggests they may just lose track of which way is up.

Previous theories say light probably blinds flying insects so that they get trapped by the light, or maybe they interpret light at night as a place to fly for a quick escape. Now the new study suggests flying insects instead turn their backs to the sky's light to keep their feet pointing toward the ground. Insects naturally turn their backs toward light. But when that light is from an artificial source, it may affect their sense of direction, leading to them flying in circles or diving toward the ground.

At a field station in Costa Rica, Samuel Fabian, an entomologist from Imperial College London in England and his teammates set up hanging and standing lights, and then used high-speed cameras to track wild, flying insects including moths and flies. Some circled the lights endlessly, and others flew sharply upward, losing speed until they couldn't fly any higher. When the light source pointed up, some insects turned around and headed for the ground. During the flight, the insects always kept the lights at their back even if they'd end up crashing. Crash landings were common when the team lit up a white sheet on the floor. But not when a white sheet—stretched into a height above the floor—was bathed in diffuse （漫射） light, much as the sky would be, insects flew through the area without getting trapped by the light.

The team also observed some species in a lab. Moths and dragonflies generally behaved like the wild insects, and they kept the light at their backs. However, in the lab, fruit flies, like oleander hawk moths—which can fly in the dark—could fly over LED lights without being thrown off course. In the wild, though, the moths still crashed. Maybe this is because, Fabian says, the insects can sometimes control their response to light, or over time, they might learn to avoid artificial light.