Instagram is containing so many photos of food—now a pop-up diner in London is taking advantage of this new trend by letting people settle the bill for their meals simply by uploading photos of their dishes to social networks.

    I always thought people's taking pictures of their food was kind of silly, but at this new pop-up restaurant in the UK,I'd probably do it too.“The Picture House” is the world's first pay-by-photo restaurant—you order, click a photo of the food,share on Instagram and eat for free!

    The restaurant belongs to frozen food giant (巨人) Birds Eye,who came up with the idea to cash in on people's addiction with photographing food and sharing the pictures online.They conducted a survey and found out that more than half of the British population regularly took pictures of their meals.So they realized it was a better way to advertise their new dining range.

    The pop-up diner was open in Soho, London for three days in May,and is now moving to other major UK cities. They serve two-course meals that customers don't have to pay for,if they photo and Instagram it.

    The restaurant is a part of Birds Eye's 'Food for Life' campaign,a new marketing project that aims at changing the way people look at frozen food."Taking photos of food enables people to show off and to share their mealtime moments—from the everyday to the special," said marketing director Margaret Jobling .

    The reaction to The Picture House has been great so far.And The pay-by-picture concept has proven to be an effective way.Alternative payment methods are actually gaining popularity among a lot of businesses.Last year,in a cafe in Germany customers pay by how much time they spend there,not by what they eat.

    Children grow quickly, especially their feet. But many families cannot buy new shoes each time a child needs them. As a result, about 300 million children around the world go barefoot. Those children risk picking up diseases and parasites from the soil.

    Kenton Lee, an American man invented The Shoe That Grows. He explains, “It grows in three places: the front, on the side and on the back. It can last up to five years. The bottom is rubber like tire rubber. The top is just high-quality leather. ”

    Lee says he got the idea for the shoe while working as a volunteer in an orphanage in Kenya. “I just remember a little girl who wore a pair of small shoes. The shoes were so small that she had to cut open the front of her shoes to let her toes stick out. And I just remember thinking, wouldn't it be nice if there were a pair of shoes that could grow with her feet？”

    However, Lee says it was not easy to turn his idea into a reality. Finally, in 2009 Lee founded a non-profit organization called Because International. In the office of Because International, Lee keeps a pair of his own shoes to help him remember his promise.

    A pair of shoes, he says, gives more than protection. It gives a child self-worth and more chances to succeed. “Because it's a small thing that really does make a big difference to keep them healthy and happy and having more chances to succeed.”

    Kenton Lee adds that his goal is to help get The Shoe That Grows to as many children as he can around the world.

    Thirteen-year-old American Jessica Goldstone wants to be a fashion designer when she finishes school. She thinks her designs would be more exciting than clothes bought from stores. But until this month, Jessica has never touched a sewing machine(缝纫机).

    After her first class, Jessica and six other girls aged 9 to 13 said that sewing was fun, cool and challenging.

    These students at Fabrics' Sew Fun class show that the sewing machine is becoming popular again.

    "There have been a lot of teens getting excited about sewing," said a sewing company worker Donna Smith. "Some of them come from the Project Runway TV show," she said. This TV show is an exciting weekly contest to make a great fashion designer. Every week one contestant (参赛者) fails the test and has to leave the contest.

    The number of people who joined sewing class summer camps grew by 10 percent this year. That's good news for companies that make sewing machines and publish sewing magazines. The Singer Sewing Company sold nearly 3 million sewing machines in the United States last year. This is about twice as many as in 1999.

    Sewing machines have been around for more than 150 years, but they have changed a lot since your grandmother was a girl.

    Spencer Carmel started sewing lessons after getting a sewing machine for her 11^th birthday. She has sewn a lot by hand, but she wants to make more difficult things. Spencer's class recently made hats.

    Another member of the class, Kelsey Oen, 9 years old, needed time to get used to her machine, but soon she could use it well. By the end of the class, Kelsey was happy and wearing her new hat.

    One of the biggest social issues in Japan is the increasingly low marriage rate among young people and the small birth rate, which led to an aging and eventually shrinking（萎缩） population. Most young Japanese women simply don't seem interested in having many children.

    Now what began in Japan is happening globally. As David Brooks wrote, birth rate is becoming smaller in much of the world, from Iran — 1.7 births rate per woman — to Russian, where low birth rates connected with high death rates mean the population is already shrinking. And this includes US, which has long had higher birth rates than most developed nations. Aging countries will face the burden of caring for large elderly populations without a larger resource of young workers.

    It's true that global aging is going to present some major challenges. Who will take care of the elderly? Will an older world be less active and slower to change and adapt? It's all true. Sometimes I worry about a coming generational war over resources, just as I worry about how I will take care of my own parents in their old age, just as I worry about who might take care of me.

    But here's the thing: an older world may have less pressure on the environment. As we all know, the environment is the real victim of overpopulation.

    So maybe a world that grows slower and grows older will put less pressure on the environment, and buy us a few more years to ensure our energy use, along with our birthrates, reaches a sustainable（可持续的）level. After all, we're supposed to get smarter as we got older. Hopefully that holds true for the planet as well.

    Whenever something looks interesting or beautiful, there's a natural impulse(冲动) to want to own and preserve it — which means, in this day and age, that we're likely to reach for our phones to take a picture.

    Though this would seem to be an ideal solution, there are two big problems associated with taking pictures. Firstly, we're likely to be so busy taking the pictures that we forget to look at the world whose beauty and interest drove us to take a photograph in the first place. And secondly, because we feel the pictures are safely stored on our phones, we never get around to looking at them, so sure are we that we'll get around to it one day.

    These problems were noticed right at the beginning of the history of photography, when the average camera was the size of a grandfather clock. The first person to notice them was the English art critic, John Ruskin. He was a traveler who realized that most tourists make a boring job of noticing or remembering the beautiful things they see. He argued that humans have a natural tendency to respond to beauty and wish to have it, but that there are better and worse expressions of this desire. At worst, we get into buying souvenirs or taking photographs. But, in Ruskin's eyes, there's one thing we should do and that is attempt to draw the interesting things we see, no matter whether we have any talent for doing so.

    Ruskin was very upset by how seldom people notice details. He strongly disliked the travelers who prided themselves on covering Europe in a week by train. "If he be truly a man, no harm to go slow; for his glory is not at all in going, but in being."

    When you think of batteries, you'll likely think about them powering up remote controls, cellphones, flashlights and toys. But some people carry a battery around in their body to power a pacemaker (起搏器). It isn't really pleasant and easy to carry batteries because they need to be replaced so often and they can leak poisonous chemicals. A battery-powered pacemaker may become a thing of the past, thanks to a new technology developed by UCLA researchers: A biological super capacitor (超级电容器) , which is thinner than several hairs.

    Teams of researchers at UCLA and the University of Connecticut published a paper in a journal explaining their new invention. The super capacitor is made from a carbon material, and coated with human-like proteins that act as electrodes (电极). But what makes the device different is that it is powered by an energy harvester that changes body heat and movement in the blood into energy.

    Those traditional pacemakers are six to eight millimeters(毫米) thick. They are much bigger. The new super capacitor, which, due to its lack of battery, is only one micrometer(微米) thick. This "little" feature could benefit the new pacemaker's energy efficiency, researchers stated. Also, unlike other batteries used in medical treatments, the super capacitor can bend and twist in the body without suffering damage.

    Though they've not been widely used in the medical world, super capacitors have the ability to serve as a safer and more efficient medical device than the traditional battery-operated devices, the researchers believe.

    "In order to be effective, battery free pacemakers must have super capacitors that can get, store and transport energy. However, commercial super capacitors are too slow to make them work", said Maher El-Kady, a UCLA researcher and co-author of the study. “Our research focused on the custom-designed super capacitor to capture energy effectively, and finding a way to make it exist together successfully with the human body."