Conventional wisdom says that hardship can make us old before our time. In fact, a new study suggests that violence not only leaves long-term scars on children's bodies, but also changes their DNA, causing changes that are equal to seven to ten years of premature aging.

    Scientists measured this by studying the ends of children's chromosomes (染色体), called telomeres (端粒), says Idan Shalev, lead author of a study published in Molecular Psychiatry.

    Telomeres are special DNA sequences (序列) which prevent the DNA in chromosomes from separating. They get shorter each time a cell divides, until a cell cannot divide any more and dies.

    Several factors have been found to shorten telomeres, including smoking, radiation and psychological stresses such as being treated badly when young and taking care of a chronically ill person.

    In this study, researchers examined whether exposure to violence could make children's telomeres shorten faster than normal. They interviewed the mothers of 236 children at ages 5, 7 and 10, asking whether the youngsters had been exposed to domestic violence between the mother and her partner; physical maltreatment by an adult; or bullying. Researchers measured the children's telomeres-in cells obtained by wiping the insides of their cheeks-at ages 5 and 10.

    Telomeres shortened faster in kids exposed to two or more types of violence, says Shalev. Unless that pattern changes, the study suggests, these kids could be expected to develop diseases of aging, such as heart attacks or memory loss, seven to 10 years earlier than their peers.

    Shalev says there is hope for these kids. His study found that, in rare cases, telomeres can lengthen. Better nutrition, exercise and stress reduction three things that may be able to lengthen telomeres, he says.

    The study confirms a small but growing number of studies suggesting that early childhood a adversity imprints itself in our chromosomes, says Charles Nelson, a professor of pediatrics and neuroscience at Harvard Medical School.

    A company in San Francisco, California, has found a way to turn used plastic bottles into women's shoes.

    Every day, millions of Americans drink water and other liquids from plastic bottles. More than 60 million of them are thrown away each day. Many of the plastic bottles end up in landfills or are burned with other waste products.

    A San Francisco start-up company called Rothy's, however, turns this plastic waste into environmentally friendly shoes. Roth Martin is the company's co-founder. He explains how they turn plastic into soft material for women's feet. They take the plastic, clean it, and break it down into small pieces. Then they press them through a device that makes soft fibers. Those fibers are then combined together. This is done by a 3D machine. It is designed to reduce waste while making the shoes. The knitted stuff and the inner part of the shoe are then attached to the shoe's outer part, called the sole (鞋底). This outer sole is also made from environmentally friendly material: responsibly sourced no-carbon rubber.

    Rothy's shoes are sold online. They are flat shoes, with either a rounded or pointed toe. They come in different colors and designs. They cost either $ 125 or $ 145 per pair, depending on the design. After American actress Gwyneth Paltrow discovered them last year, the demand for the shoes grew. Martin says there is no shortage of material to fill that demand. “We're not going to run out of water bottles any time soon. So we have a limitless supply of material, and I think that is a good sign for our future.” When the environmentally friendly shoes wear out, customers can return them at no cost to a company that uses the recycled materials to make other products.

    For now, the shoes are only available to be shipped in the United States. However, the company says it will add international shipping in the near future.

    Here's this week's list of four open jobs throughout the local area. Whether you're unemployed and need a job or you are just sick of the one you have, Roswell Patch wants to help. We know new jobs can be hard to come by these days, which is why we will try to post a selection of jobs we've found in the area on the site each week. Happy hunting!

    Part-time Spanish Instructor-World Language Institute, Inc. –Roswell World Language Institute, Inc. in Roswell is currently hiring a part-time, native-speaking Spanish instructor. Applicants must be able to pass a background check and drive a 15-passenger bus to pick up students from several schools, from 2 pm-6pm .Monday-Friday. The position pays $10 per hour. More information about the job is available online.

    Experienced Servers-Chill's-Alpharetta

    Chili's in Alpharetta is seeking experienced servers to add to its team. Qualifications will include being clean and neat and having great attitude and customer service skills. The pay is $2. 13, plus tips. Stop by the store to fill out an application. More information about this position is available online.

    Registered Nurese-North Fulton Regional Hospital-Roswell

    North Fulton Regional Hospital is looking for a RN/Registered Nurse to fill a 12-hour night shift. Applicants must be registered and previous hospital experience is preferred. More information about the position is available online.

    Software Engineer-Controlscan-Alpharetta

    Controlscan in Alpharetta is hiring a software engineer, Applicants should have five or more years of relevant experience, as well as advanced knowledge of computer technology. Pay is commensurate(相称)with experience. More information about the position can be found online.

    Nations in the UN have agreed that the world needs to completely stop plastic waste from entering the oceans. The UN resolution(决议) has no timetable. But ministers at an environment summit believe it will set the course for much tougher policies and send a clear signal to business.

    Under the resolution, governments would establish an international task force(特遣小组) to advise on fighting what the UN's oceans chief has described as a world crisis. One controversial issue is the wish to include businesses on the global task force. Ministers say the problem will not be solved without business, but green groups point out that some firms in the plastics industry have been against restrictions for decades. Vidar Helgesen, a leading voice in the talks, told BBC News, “Business is listening to markets and seeing how marine litter(海洋垃圾) is a growing popular concern. It's possibly the fastest－growing environmental problem and it's therefore a fast－growing problem for business. We need to bring on board those companies that want to change things, and then look at taxes and regulations to make more companies act.”

    Certainly, there has been resistance from plastics firms to the bans. One UN delegate, who did not want to be named, stated that journalists in some countries were being paid by the plastics industry to write stories about job losses following the plastic bag ban. But they did not mention the jobs being created in alternatives, such as labour－intensive basketwork, which provides work for the rural poor. But some governments are standing firm, and the meeting has witnessed individual nations declaring tougher action against single－use plastic bags.

    The UN's spokesman Sam Barratt told BBC News, “Of course we would have liked to have gone further, but this meeting's made real progress. There's now a sense of urgency and energy behind the issue that we haven't quite seen before. What is obvious, though, is that the UN can't solve this problem on its own. We need to do it in partnership with governments, businesses and even individuals.”

    Hipster Greenport: 4 places to eat, shop and visit

    Greenport may date back to the 1630s, but it's feeling pretty of-the-moment right now. Here are four places that embody the old-meets-new energy of the village:

    Claudio's

    If you've been to Greenport, you can't miss Claudio's — it's where generations of Long Islanders have made a tradition of eating, whether inside the main restaurant or at the floating dock-bar. The new owners have added fresh elements: Baccano Pizza by Nino, which offers a variety of slices and pies until as late as 2 a.m. on Fridays and Saturdays — is right by the dock entrance.

    Little Creek Oyster Farm & Market

    It's little spots like this that tell the current Greenport story. There's no sign or advertising for this tiny house changed from the cabin of an old ship that's practically hidden down Bootlegger's Alley near Mitchell Park. But there they are — streams of people who come to enjoy the fresh oysters while drinking local craft beer, with a waterside view.

    The Times Vintage

    Nostalgia (怀旧) for bygone times runs high in this 1909 building, which once served as the base for the Suffolk Times newspaper. These days, this well-designed shop sells vinyl records (黑胶唱片) and loads of old-fashioned clothing and home decoration items including mid-century highball sets.

    Greenport Fire

    Heat comes in many forms and several are sold here — hot sauces, cigars and candles. Consult the chalkboard for the current sauce offerings or browse cigars such as a hand-rolled Honduran Leaf by Oscar or the Gurkha Cellar Reserve made with 18-year-aged tobacco.

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China also announces new plans {#blank#}5{#/blank#} ( make) a space station and go to Mars and further space. It will finish building its space station around 2022. According to China's top space scientist Zhou Jianping, at that time, {#blank#}6{#/blank#} (become) an astronaut will be a normal job. More astronauts are needed than ever before. They need to be able to finish difficult {#blank#}7{#/blank#} (task).

By now, China has been choosing astronauts {#blank#}8{#/blank#} (main) from pilots like Yang Liwei. In the future, astronauts {#blank#}9{#/blank#} ( pick ) from engineers, doctors and space technology experts. Another plan is about Mars. In order to explore Mars, China sent {#blank#}10{#/blank#} spacecraft(航天器), whose name is Tianwen-1, to Mars on July 23, 2020. It will land on Mars and even bring back things from Mars.