How Super Are Supermarkets?

    Buying e week's groceries is tiring. You want to get it over and done with quickly, so you head for the nearest supermarket, you find everything you need under one roof, and you feel glad that those days of going in and out of different shops in the high street are over. Supermarkets seem to be a big plus. There is a downside, though.

    In the UK 90% of all the food people consume is bought at 5 different supermarket chains. This makes these companies extremely powerful, which lets them use their huge buying power to squeeze small suppliers to get the best deal. Milk is a good example. Supermarkets like to use things like milk, which is the top of almost everyone's shopping list to attract customers. To offer the lowest price possible to the consumer, the supermarkets force dairy farmers to sell milk at less than the cost of production. Supermarkets guarantee their good profits while farmers are left struggling to make ends meet, and the taxpayer pays to support the system without even knowing it.

    It would be nice if local grocers supported local agriculture. But for the big supermarkets this just doesn't make sense. Supermarkets don't want little farmers thinking they can decide prices. So supermarkets have started a global search for the cheapest possible agricultural produce. In many supermarkets it is difficult to find anything which is produced locally.

    UK farmers used to grow a lot of apples. Not anymore. In 1999 36% of apples were imported. By 2015 the figure had risen to 80% and the domestic production of apples had fallen by two thirds. The consumer might just be happy to get a reasonably priced meal made up of foods from Thailand, Spain, Italy and Zambia, but we should also bear in mind the Influence on local producers.

    Then there's packaging. Supermarkets like everything to be packed and wrapped so it can be piled neatly on shelves. Supermarkets produce nearly 10 million tons of waste packaging in the UK every year, of which less 5%is recycled. Some supermarkets make sure that large recycling bins are obvious in their car parks, showing that they are environment-friendly. But that is just an image.

    When a new supermarket is planned there are claims about the number of new jobs that will be created. Unfortunately, the number of jobs lost in the area is larger than the number of new positions in the supermarket. On average each new supermarket leads to the loss of 276 jobs.

    However, the modern world is all about shopping, and the freedom to buy whatever you what, so it would be impossible to stop people shopping at some particular kind of shop. But some measures do need to be taken when small suppliers lose profits, local producers suffer, sea levels rise and jobs are lost, anyway, we can't just care about a free car park and special offers.

    Before coming to France, I always thought that French people wear formal clothes. But, when I arrived in Paris, I came to know why France could remain the lead in world fashion and Paris could attract so many designers (设计师) from all over the world to come.

    On the boulevard of Champs-elysees, there are many fashion shops of famous brands, such as Chanel, Dior, Pierre Cardin. In daily life, however, most of Parisians never wear clothes like those on the super models. On the opposite (相反), I found people in Paris often dress in very simple designs and usually in dark.

    Such situation doesn't affect French designers to create more and more new styles. But I would say people in Paris dress more formally than those in the rest of France. In other French cities, what people wear are usually casual (休闲) dresses, such as T-shirts and jeans.

    French people act as the fashion leaders, but they accept other clothes styles as well. Montpellier, the city I live in, is in southern France near the Mediterranean Sea. Here are many immigrants (移民) from Algeria, Morocco and other African countries. The Arabian and African cultures are influential (有影响的) in this city. Therefore, you can find a lot of young people dress in the North African style.

    Exposing living tissue to subfreezing temperatures for long can cause permanent damage. Microscopic ice crystals (结晶体) cut cells and seize moisture (潮气), making donor organs unsuitable for transplantation. Thus, organs can be made cold for only a few hours ahead of a procedure. But a set of lasting new antifreeze compounds (化合物)—similar to those found in particularly hardy (耐寒的) animals—could lengthen organs' shelf life.

    Scientists at the University of Warwick in England were inspired by proteins in some species of Arctic fish, wood frogs and other organisms that prevent blood from freezing, allowing them to flourish in extreme cold. Previous research had shown these natural antifreeze molecules (分子) could preserve rat hearts at -1.3 degrees Celsius for up to 24 hours. But these proteins are expensive to extract (提取) and highly poisonous to some species. “For a long time everyone assumed you had to make synthetic (人造的) alternatives that looked exactly like antifreeze proteins to solve this problem, ”says Matthew Gibson, a chemist at Warwick who co-authored the new research. “But we found that you can design new molecules that function like antifreeze proteins but do not necessarily look like them.”

    Most natural antifreeze molecules have a mixture of regions that either attract or repel water. Scientists do not know exactly how this process prevents ice crystal formation, but Gibson thinks it might throw water molecules into push-pull chaos that prevents them from tuning into ice. To copy this mechanism, he and his colleagues synthesized spiral-shaped molecules that were mostly water-repellent—but had iron atoms at their centers that made them hydrophilic, or water-loving. The resulting compounds were surprisingly effective at stopping ice crystals from forming. Some were also harmless to the roundworm Caenorhabditis elegans, indicating they might be safe for other animals.

    “These compounds are really cool because they are not proteins—they are other types of molecules that nonetheless can do at least part of what natural antifreeze proteins do, ”says Clara do Amaral, a biologist at Mount St. Joseph University, who was not involved in the research. Gibson's antifreeze compounds will still need to be tested in humans, however, and may be only part of a solution. “We don't have the whole picture yet,”do Amaral adds. “It's not just one magical compound that helps freeze-tolerant organisms survive. It's a whole suite of adaptations.

    A sea turtle named Herman, an octopus called Octavia, and a seal named Lidia all spent this summer at the Smithsonian's National Zoo in Washington, D.C. But unlike the zoo's other residents, they are not real animals. These creatures are actually huge sculptures and they're made entirely out of plastic trash from the ocean.

    These giant artworks, along with 14 others, are part of a traveling exhibit called “Washed Ashore: Art to Save the Sea”. The Washed Ashore project, led by artist Angela Haseltine Pozzi, works to raise awareness about the problem of plastic pollution in Earth's oceans.

    More than 315 billion pounds of plastic litter the world's oceans today. Most of the plastic is garbage from towns and cities, as well as trash that people leave on beaches, rainwater, winds, and high tides bring the trash into the ocean or into rivers that lead to the ocean. Once it is under the waves, the plastic begins to break up into smaller and smaller pieces. It often collects in spots called garbage patches, which spread over large areas of the ocean.

    Thousands of marine animals--including whales, sea turtles, and fish--die each year from eating or getting stuck in plastic bags and other items. Plastic pieces can also injure coral and kill sea grass.

    Washed Ashore and other organizations are working to stop that from happening. Since 2010, Washed Ashore volunteers have collected 38,000 pounds of plastic trash from more than 3000 miles of beaches. They helped Pozzi create more than 60 sculptures of marine creatures that were harmed by plastic pollution.

    The artworks on display at the National Zoo include a 20-foot-long coral reef, a 12-foot-long shark, and a 16-foot-long parrot fish. Each one is made from hundreds of pieces of trash like water bottles and sunglasses.

    “These sculptures are a powerful reminder of our personal role and global responsibility in preserving biodiversity(生物多样性) on land and in the sea,” says Dennis Kelly, director of the National Zoo.

    Parents complain that children outgrow their clothes so fast that it costs a fortune（￡12, 000 on average per year）, going through seven different sizes in the space of their first two years. There could now be a solution：a new high－tech fabric（织物）that expands as the wearer grows.

    Ryan Yasin, who is studying for a master's degree at the London Royal College of Art, came up with the idea after purchasing clothes for his newborn nephew, only to find the baby had outgrown them by the time they arrived. In addition to the expense Yasin was also concerned about the environmental influence. The process of making and distributing just l kilogram, or 2. 2 pounds, of new fabric results in an average of 23 kg, or 50 pounds of greenhouse gases. To make matters worse, the “fast fashion” trend worldwide has caused garment production to double since 2000, with more than half of the clothing ending up in landfills annually!

    To find a solution, Yasin used his previous experience designing satellites to invent a way to fold synthetic（合成的）material such that it stretches in all directions.

    The first design, a pair of tiny pants, not only fit his baby nephew, but also his 2－year-old niece! After spending a lot of time perfecting the process and testing the design, Yasin is now awaiting a patent for his design and seeking investors（投资者）to bring the clothing to market.

    For his new line of Petit Pli, the designer plans to produce outerwear that is both waterproof（防水的）and windproof. The clothing will be machine washable and fold small enough to fit in a jacket or pant pocket. Yasin plans to establish a take－back system so that worn－out Petit Pli clothing can be recycled into new fabric.

    The designer does not expect parents to dress their children only in his expandable clothing, particularly since the current designs use synthetic materials. But he plans to soon produce the wear in “a wider variety of garments” and hopes that Petit Pli will be able to have an “influence on over-consumption. ”We surely hope he succeeds!