On a Saturday morning earlier this September, the world got its first look at the Strati. This electric vehicle is unlike any other currently on the road. It rolls on four wheels, but its body and chassis(底盘) weren't built in a factory. Instead, Strati's designers used a technology called 3-D printing. It created those parts of the car in one piece, from the ground up.

    “Compared to a typical vehicle on the road, the Strati definitely looks different,” says Greg Schroeder, a senior research engineer at the Center for Automotive Research in Ann Arbor, Mich. He did not work on the new car. His organization studies trends and changes in th e auto industry.

    It took 44 hours to print the new car at the International Manufacturing Technology Show in Chicago. Over the next few days, the car's designers installed additional parts. These included the car's engine, brakes and tires. Then, early on September 13, Jay Rogers climbed into the car, started its engine and drove the vehicle onto the street. Rogers helped found Local Motors. It's the Arizona-based company behind the Strati. Two weeks later, his team printed a second Strati, and just as fast, at a fair in New York City.

    Justin Fishkin, a local Motors official, sees the Strati as a window into the future. Today, car buyers are limited in their choice of a vehicle. They can order only what car companies have already designed. But in the future, he says, you may be able to design your own car online and then get it printed to order.

    Manufacturing experts say 3-D printing has begun to revolutionize how they make things. The technology has been around for decades. But these machines used to be so expensive that only large companies could afford them. In the last few years, though, that has changed. Many of the machines are now inexpensive enough for small companies—or even individuals —to own. Some local libraries make them available to the public. High Schools are beginning to use them in classrooms. Wide access to these printers means people can now design and print a wide variety of new things.

    The car's printer is a one-of-a-kind device.

    The technology behind the 3-D printer used in Chicago is an example of additive manufacturing. This proce ss builds solid objects, slice by slice, from the bottom up. (“Strati” means layers, in Italian.) A mechanical arm moves a nozzle from one side to another, back and forth. As it moves, the nozzle deposits a liquid—often melted plastic or metal (but it could be food, concrete or even cells) —that quickly hardens or bonds to become solid or semi-solid. This creates a single, thin layer. Once a layer is complete, the printer starts depositing the next one.

    “There's a lot of interest in 3-D printing in the auto industry,” says Schroeder. Right now, the technology is particularly useful for building models of cars or car parts.

    To compete with current auto manufacturers, the 3-D printer would have to increase in a hurry, Schroeder says. By contrast, he notes, a Ford F-150 pickup truck rolls off an assembly line at a rate of roughly one per minute. To print as many Stratis would require many more printers. Schroeder says he doesn't see 3-D printing soon taking over for such high-volume manufacturing. But, he adds, “Who knows what will h appen in the long term?”

    Scientists at Oak Ridge National Laboratory in Tennessee designed the 3-D printer used in Chicago. Lonnie Love, a research scientist at the lab, led the effort.

    Additive manufacturing often is slow and expensive. It also may produce materials that are unreliable, Love says. So for two years, his team searched for ways to make 3-D printing better. They built new machines and tested them over and over.

    All of that work paid off: their new machine is fast and uses less expensive material than earlier printers. In addition, it prints a plastic embedded with fibers of carbon to produce a stronger material. This helps ensure the material won't crack or break under pressure.

    The Humane Society of Utah,a non-profit organization,is the largest shelter in the state because it takes every animal that can be lawfully accepted.The shelter employed photographer Guinevere Shuster,from New York,who came up with a creative way to find new homes for the dogs.She took lively photos for them.

The 31-year-old created sets of four pictures showing the playful and serious sides of each animal.Guinevere Shuster tried her best to show these dogs the way they'd really look if you allowed them into your life.She said,"I'm always trying to imagine better ways to make the poor animals attractive to the public.The photos show their great personalities and are a much better way than presenting them as the sad dogs waiting to be taken home.I'm lucky because I get to connect the two things I love most,animals and photography."

Guinevere says she finds it easy to work with dogs.She said,"It's just me and the dog in the office so they can pay their attention to the photo-taking.I use a lot of treats and some funny noises I've learned to get the dogs' attention. A fun method is to throw treats at the dogs-it's useful for getting unusual looks from them."

    Since starting the project,a number of dogs have been taken home by dog lovers after they saw Guinevere's pictures on the Humane Society of Utah's Facebook page.In the last three years,she has photographed more than 4,000 animals.This year,the shelter has placed nearly 9,000 homeless pets into their permanent homes.

    Tattoos (纹身) are becoming more and more common. But they are not a new thing. Scientists have found some frozen bodies from around 3,000 BC and their skin shows the marks of tattoos. For example, Otzi, the Iceman (the oldest body ever found), was discovered in the mountains of Austria. He had many different lines and crosses tattooed on his back and his knees.

    The most common places to get tattoos are the tops of the arms for men and the bottoms of the backs for women. Any mark can be used but there are some common ideas. Some people like to get animals, like dragons, birds and tigers. Other people like to get something written in a foreign language, so Chinese and Japanese words are common in America and the UK. If you can't read the language, make sure you get someone to check what they represent because the tattoo artist could write anything and you would never know.

    It is a big decision to get a tattoo because they are very difficult to remove. It is possible with expensive laser surgery (激光手术) but this is very painful and amazingly expensive and the skin will never be perfect afterwards. You want to do a test, to see how you look with a tattoo, you can get a temporary tattoo which disappears after about a month. This kind is very popular in India, where people often have them for festivals.

    In some countries, such as Japan and Korea, tattoos are still connected with law-breaking activities and it isn't normal to see a tattoo in public. In many places of Europe and America, most people don't care very much whether you have a tattoo or not, though there are some types of job where they don't like tattoos. But some Presidents of the USA have had them.

    College graduation eventually means taking much of your attention in your first job search. This process can be challenging, especially for those students who had second thoughts about their chosen major and intended career path — or those who majored in a field not directly connected to a specific career. If you are in one of these groups, fear not! Although your major, coursework, and academic performance are relevant to landing a job, they are not the only deciding factors on where you can work. So, just how important is your major to your job search?

    Some majors are tied directly to specific career fields. For example, if you wish to become a teacher, you will likely have needed to complete an education program and eventually sit for a licensing exam. Successfully completing a specific major is very important to landing a job in the matching field.

    Other majors, however, are closely related to career paths but don't necessarily require a degree in the area. For example, students who majored in finance or math, may also have the necessary skills to be hired as an accountant.

    Lastly, there are many industries, such as professional sales, education (non-teaching positions), insurance, and customer service management, which hire new graduates from several more majors, looking for more generalized (笼统的) requirements. They may simply want to know the student has completed his or her bachelor's degree, which proves students' college-level math and writing, critical thinking, and problem-solving skills.

    Hopefully, as a college student, you were able to do more than just attend classes. Your non-academic experiences can be very influential on your future career as well. If you worked or volunteered during college and if you enjoyed these activities, seek out related careers. You may qualify for a position regardless of your major.

    Although it often seems like your college major alone determines your career fate, this just isn't the case. It may influence it, but there are other factors that influence your career options as well. If you don't know what career choices you have, talk to your faculty or academic adviser. You may be surprised at what opportunities await!

    Snowbirds are people who leave their homes when the temperature drops and head to warmer climates. They are mostly retirees(退休人员) and business owners who can afford(付得起) to take the winter off. While the snow flies in the Northern states, they are enjoying golf, sailing and barbecues in mild temperatures in the South. Then, after winter passes, they return to their homes in the North.

    Most snowbirds are away from Canada and the Northern states between the middle of October and the end of November. They pack up and head to Florida, Alabama, Texas, California, and all of the other Southern states. Some may even go as far as Australia or Italy to escape the cold winter weather. There are special communities(社区) for snowbirds in many areas. Snowbirds are also offered special discounts(折扣) in some restaurants, hotels and area attractions. Several states even have special snowbird resorts (度假胜地). There are several online communities and local resources to help snowbirds get set in their seasonal homes.

    Some snowbirds own homes both in the South and in the North. Both homes have everything they will need for their stay, minimizing(最小化) the amount of packing necessary when moving from one to the other. Other snowbirds will rent apartments for their stay outside their home state.

    RVs(房车), are a huge part of the snowbird lifestyle. RVs allow snowbirds to move from place to place on a whim (奇想), bringing everything they need with them. They spend nights in RV parks, large parking lots or anywhere else they choose to stay. RVs have beds, bathrooms, and most other modern conveniences at home. Although the space is small, there is more than enough room for a couple to live in.

    THREE years ago Jenny Salgado, a Dominican shop assistant, moved to Highland town, a neighborhood of Baltimore. When she arrived the shop she works in, it was one of only a few Spanish businesses. Now there are many more. "It's good now if you speak Spanish," she smiles.

    Baltimore has been losing people for 60 years. To address this, its mayor, Stephanie Rawlings-Blake, wants to make it the most immigrant-friendly city in the world. Its libraries provide Spanish-language exercise classes. To help those with no papers, the city is introducing micro-loans (小额贷款) which require no credit checks; city police would no longer routinely check the immigration status of citizens or enforce any federal immigration law unless required to. The then governor, Martin O'Malley made it possible for illegal immigrants to get driving licenses.

    Such welcoming policies are spreading. Such cities as Cleveland, Dayton and Philadelphia all eagerly try to please immigrants. Rick Snyder, the governor of Michigan, has asked the federal government to offer 50,000 visas to people who agree to live in Detroit. His administration has made it easier for skilled migrants to get professional licenses.

    When a city's population falls, both tax receipts and services fall. Half-deserted neighborhoods breed (滋生) crime, driving yet more people to leave. No city has escaped this death circle without attracting new residents, says Steve Tobocman of Global Detroit.

    Several studies suggest that when immigrants arrive, crime goes down, schools improve and shops open up. In Detroit, immigrants living near the tiny separate city of Hamtramck have formed local watches to guard against thieves. Their neighborhoods are not just safer; they are also among the only places where it is as easy to buy fresh vegetables as drugs and alcohol.

    But attracting new immigrants to the cities which most need them is hard, argues Audrey Singer of the Brookings Institution. They care about the same things as everyone else: safe streets, good schools and jobs. Cities which have lost population for decades struggle with all of these.