For those concerned about wrinkly old skin, It might be a creative solution: an elastic(有弹性的) “second skin” that can be smoothed on to make aged tissue look more youthful.

    The wearable film, developed at the Massachusetts Institute of Technology (MIT), has shown promise in a series of small experiments where it was applied to wrinkles, under-eye bags and areas of dry skin. When applied to the face or body, the thin, transparent layer sticks to the skin and supports the tissue, making it look and behave like younger skin, its producers claim.

    “What we've been able to do is create a cream that you can put on the skin, and then when it's on the skin it can actually form, essentially, an elastic second skin,” said Bob Langer, who led the research. Tests in the lab found that the polymer film (高分子膜), which is only 70 thousandths of a millimetre thick, reduced the appearance of wrinkles and under-eye bags, and helped keep moisture in areas of dry skin.

    The layer is designed to be applied in the morning, then peeled off at night. In previous studies, the second skin withstood normal daily wear, and the stresses and strains of exercise and swimming, without falling off or causing irritation. It also survived exposure to rain.

    “It's something you can wear for a whole day or longer, depending on the physical forces thatget applied to the area where it is worn, "said Daniel Anderson, who helped develop the product at MIT. “You can't tell you're wearing it.”

    While normal cosmetics can mask imperfections on the skin, the new coating changes the way skin behaves by giving it the elasticity of young skin. It was developed with help from two companies.

    When you ask people how to make friends as an adult, they usually give you suggestions like, “just get out there,” “join a dance class,” or , “try speed dating.”{#blank#}1{#/blank#}.

    After all, making friends does require us to get out into the world and take a few emotional risks. Most of the time, however, we are not lacking for ideas on where to meet people. {#blank#}2{#/blank#}

    For this reason, most people find that reconnecting with themselves is a first step towards reconnecting with others.

    If you feel tired, out of shape, or sad, most of the time, making friends is going to be extremely difficult. {#blank#}3{#/blank#}

    Start small. Use the1-minute technique to gradually increase your commitment to exercise. Get out into nature. Set a timer to remind yourself to get up every hour to stretch. Try gentle yoga.

    While you build up your body, don't forget to nourish your mind. Write down one thing every day that you are grateful for. {#blank#}4{#/blank#}

    Learn to become your own best friend.

    {#blank#}5{#/blank#}Instead of relying on our social circumstances to bring people into our lives, we need to change ourselves first and then invite people into our lives.

A. On the surface, these are fine suggestions.

B. Spend a few minutes every day in reflection.

C. It will be even more difficult when you are an adult.

D. We only need to know how to start a conversation with strangers.

E. We are missing the motivation and self-confidence to get started.

F. Making friends as an adult is possible, but it requires a new approach.

G. Fortunately there are plenty of simple things that you can do to increase your physical and emotional resources.

    Building the thinking habit is important because it helps you live with a purpose. How can we build the thinking habit? Here are some tips.

    Be curious.

    Curiosity is powerful. {#blank#}1{#/blank#} It also helps you recognize the ideas when they come. Curiosity is an important attitude to have in building the thinking habit.

    Read widely.

    If you want to come up with good ideas, you need to feed your mind with good ideas.{#blank#}2{#/blank#} This will give you fresh, new ideas. Don't just read from the fields you are familiar with. Read from other fields as well.

    Read actively

    Not only should you read widely, but also you should read actively. Find some ideas and think about how you can use them. My favorite way to do this is by highlighting the book I read. I will then put the actionable ideas in my idea journal.{#blank#}3{#/blank#}

    Keep an idea journal.

    When you find a good idea, don't just keep it in your mind. Instead, write it down to catch the idea.{#blank#}4{#/blank#} Keeping an idea journal makes you more alert lo new ideas. You will quickly recognize them because you already have the habit of catching ideas.

    {#blank#}5{#/blank#}

    Of course, it doesn't do you much good if you just write down ideas. Take time to read these ideas every now and then. In my case, I mark the ideas that I consider important and review them regularly. This often opens the way to new ideas.

A. Go over your ideas

B. Design your own ideas

C. One way to do that is to read.

D. It makes you like finding new ideas.

E. Otherwise, the idea might be gone forever.

F. This helps me get the most out of the book.

G. In this way, others ran also benefit from your ideas.

    Anyone watching the autumn sky knows that migrating birds fly in a V formation, but scientists have long debated why. A new study finds that these big－winged birds carefully position their wingtips and flap(拍动) at the same rate, probably to catch the upward movement of air and save energy during flight.

    There are two reasons birds might fly in a V formation: It may make flight easier, or they're simply following the leader. Squadrons(中 队) of planes can save fuel by flying in a V formation, and many scientists suspect that migrating birds do the same. Models that treated flapping birds like fixed－wing airplanes show that they probably save energy by drafting off each other, but currents created by airplanes are far more stable than those coming off of birds.

    Just as aerodynamic(气动力) calculations would predict, the birds positioned themselves to fly just behind and to the side of the bird in front, timing their wing flaps to catch the uplifting eddies(涡流). When a bird flew directly behind another, the timing of the flapping reversed(相反) so that it could minimize the effects of the downdraft coming off the back of the bird's body. “We didn't think this was possible,” Usherwood says, considering that the difficult achievement requires careful flight and incredible awareness of one's neighbors. “Perhaps these big V formation birds can be thought of quite like an airplane with wings that go up and down.”

    The findings likely apply to other long－winged birds, such as pelicans and geese, Usherwood says. Smaller birds create more complex wakes(尾波) that would make drafting too difficult. The researchers did not attempt to calculate the birds' energy savings because the necessary physiological measurements would be too invasive for an endangered species. Previous studies show that birds can use 20% to 30% less energy while flying in a V.

    Scientists do not know how the birds find that aerodynamic sweet spot, but they suspect that the animals line themselves up either by sight or by sensing air currents through their feathers. In future studies, the researchers will switch to more common birds, such as pigeons or geese. They plan to investigate how the animals decide who sets the course and the pace, and whether a mistake made by the leader can ripple through the rest of the flock to cause traffic jams.

    British chemist David Evans has become an overnight celebrity on Chinese social media. His chemistry experiments have attracted over 2 million followers in just a few months. Evans is a chemistry professor at the Beijing University of Chemical Technology. The 60-year-old always wears a white lab coat, a pair of safety goggles (护目镜), and smiles often. Some web users say he looks just like the “grandpa of KFC”.

    Evans has posted videos of various experiments. His most popular experiments have attracted millions of hits on video-sharing apps. Excited children's cheers and shouts can be heard in his videos. “I hope my experiments can arouse people's interest in science,” he says.

    Evans has been interested in China since childhood. In the early 1970s, before the reform and opening-up, he viewed it as a “country full of mysteries”. He first visited the Chinese mainland in 1987 to attend a chemistry conference in Nanjing, Jiangsu Province. He quit his job in the United Kingdom and moved to Beijing in 1996. Many of his friends thought he was crazy. But Evans says they just saw China's challenges but not its potential.

    Since 2011, Evans has turned to the Internet to popularize science. He learned short-video apps are also popular in small cities and rural areas. And he realized this enables him to reach more students, who lack opportunities to perform fun experiments. But even a one-minute video requires a considerable amount of work. Still, he thinks it's worth it to fulfill his responsibility to popularize science.

    His experiments always fill schools' lecture halls with laughter. Some viewers call him “a Harry Potter-like magician”, but he disagrees. “A magician never tells the secrets behind his tricks, but a scientist always gives an explanation.” He sees himself as a teacher. He performs experiments to spread knowledge, inspire thinking, remove misunderstandings and show that science can create change. Evans says he looks forward to more “chemical reactions” with China.

The age of technology is a great and convenient thing, but it does have effects on us in many different ways.

It causes long-term memory loss. Thanks to Baidu, we don't really have to remember much of anything. Questions are answered at the drop of a hat because Baidu is all-knowing! Is that a good thing, though? People aren't digging through their brains anymore to find answers. Here's the good news: we can still exercise our long-term memory by simply thinking before we Baidu. If we don't want to go down that road, we can search Baidu for some memory games to play. Turn Baidu into an asset instead of an enemy.

It makes us lack patience. Baidu gives us what we want. Everything is instant. In fact, if we have to wait for even a handful of minutes for anything, we start losing our minds. This idea of instant satisfaction carries through to many other aspects of our lives, too, like when we go out to eat, drive in traffic, or even deal with workplace accidents. Instead of using Baidu to lessen our anger, try searching for some mindful meditations (沉思).Focus on our breath and realize everything doesn't have to move at lightening speed. We can actually listen to some peaceful spa or meditation music on our Pandora, too!

It wastes our time. Be honest, how much time are we spending on Baidu every day? Whether we're doing research for our own personal needs, buying clothing, or writing a research paper, we all spend a ton of time on the trusty Internet. Are we always being efficient with this time? For the sake of our precious time, if we haven't used Baidu Drive, we should. Keep spreadsheets, text does, PDFs, slideshows, and even recordings exactly where we can easily find them. Keep a running list of websites we know we'll revisit.

Overall, things are different these days. Yes, there are noticeable negative side effects because of the Baidu invasion, but we don't have to fall into that trap. Stay sharp and don't let ourselves become imprisoned doing the Baidu god's bidding.