When people today talk about a tiny house, they probably mean the trendy living space that's about the size of a shed (棚). But you would have to be five inches tall to live in the original tiny houses. Dollhouse(小房子)，which have been around for several centuries, don't offer shelter to real people, but they provide a vivid（生动的） experience of life in times and places both real and imaginary.

    The National Building Museum in Washington, D.C., lets visitors time travel in this tiny world through ―Small Stories: At Home in a Dollhouse,” an exhibit that opened Saturday. Visitors can see twelve dollhouses from the Victoria and Albert Museum in London, England, which contain amazing tiny furnishings. But those people who put together the exhibit also wanted visitors to know the characters inside.

    “It's 300 years of British homes told through their inhabitants (居民),” said Alice Sage, who is in charge of the London museum.

    So as visitors look inside the Tate Baby House, a fancy townhouse from 1760, they can push a button to hear a young woman get a lecture from her mother on the proper way to run a home. In the Killer Cabinet house, a servant named Betsy complains about the problems of city life in the 1830s. “We've got the cat to keep the rats away,” she says.

    That dollhouse was John Killer's gift to his wife and five daughters. The girls were allowed to play with the house, but they probably also learned a few lessons, Sage said.

    “The kitchen of the house would have been the perfect way to teach the girls about the management of a home,” she said, noting the tiny dishes and pots.

    Those who prefer a more modern look won't be disappointed. There are two rooms displaying a white dollhouse from 1935, an apartment house from the 1960s and a brightly colored 21st-century design.

    The end of the exhibit shows how imaginative design sometimes works best in small spaces.

    The Building Museum asked twenty-four artists, designers and architects from across the United States to each create a “dream room” from the past, present or future. Some of these unique small rooms were made using traditional furnishings, others from materials such as clay, insects, 3D-printing, and even peeps marshmallow candies!

B

    Asking for salary history provides an easy way to sort applicants into an employer's desired price range and helps the employer calculate the lowest offer that will still attract a candidate. But an increasing number of U.S. states and cities agree there ought to be a law against it. Massachusetts, Philadelphia, New York City and Puerto Rico have banned salary history questions on applications and in interviews.

    Why? Because when it comes to a candidate's suitability for a job, salary history is a subjective (主观的) and often misleading indicator — and it may most affect ＂the people who have already been illegally treated,＂ says Katie Donovan, a salary negotiation coach and one of the authors of the Massachusetts law.

    Candidates who start their careers underpaid because of the gender (性别) or race wage gap, a bad economy or a cheap boss finds that this lowball (虚报低价) figure continues to weigh them down throughout their career. At the same time, senior victims of layoffs have difficulty being hired because employers assume they're not interested in senior victims.

    In an interview, you can avoid talking about salary history questions by turning the discussion to what you're looking to make.

    Donovan recommends a method similar to what you're already doing: Enter $0.00, or some other number that is clearly intended not to cheat, but to oppose.

    Of course, there's always a risk doing so because it will cost you opportunities. But Ronda Wakefield, owner of NW MT HR Solutions, says that when she receives an application with an obviously false salary history, she'll still follow up if the candidate interests her. ＂I personally don't want to miss out on a great candidate because they didn't want to answer the question directly,＂ she says.

    Most people, when they travel to space, would like to stay in orbit (轨道) for a few days or more. And this stands to reason, if you're paying $ 20,000 for your trip to orbit! So in order for tourism to reach its full potential there's going to be a need for space hotels. What would a space hotel actually be like to visit? Hotels in orbit will offer the services you expect from a hotel—private rooms, meals, bars. But they'll also offer two unique experiences: impressive views—of Earth and space—and the endless entertainment of living in zero gravity—including sports and other activities that make use of this.

    The hotels themselves will vary greatly—from being quite simple in the early days to huge luxury (奢侈的) structures at a later date. It's actually surprising that as later as 1997, very few designs for space hotels were published. This is mainly because those who might be expected to design them haven't expected the costs to come down far enough to make them possible.

    Lots of people who've been to space have described vividly what it's like to live in zero gravity. There are obviously all sorts of possibilities for dancing, gymnastics, and zero-G sports. Luckily, you don't need to sleep much living in zero gravity, so you'll have plenty of time for relaxing by hanging out in a bar with a window looking down at the turning Earth below.

    Of course all good things have come to an end, unfortunately. And so after a few days you'll find yourself heading back to the earth. You'll be thinking how soon you can save up enough to get back up again-or maybe you should change jobs to get to work in an orbiting hotel!

C

    As cultural symbols go, the American car is quite young. The Model T Ford was built at the Piquette Plant in Michigan a century ago, with the first rolling off the assembly line（装配线） on September 27, 1908. Only eleven cars were produced the next month. But eventually Henry Ford would build fifteen million of them.

    Modern America was born on the road, behind a wheel. The car shaped some of the most lasting aspects of American culture: the roadside diner, the billboard, the motel, even the hamburger. For most of the last century, the car represented what it meant to be American—going forward at high speed to find new worlds. The road novel, the road movie, these are the most typical American ideas, born of abundant petrol, cheap cars and a never-ending interstate highway system, the largest public works project in history.

    In 1928 Herbert Hoover imagined an America with "a chicken in every pot and a car in every garage." Since then, this society has moved onward, never looking back, as the car transformed America from a farm-based society into an industrial power.

    The cars that drove the American Dream have helped to create a global ecological disaster. In America the demand for oil has grown by 22 percent since 1990.

    The problems of excessive（过度的）energy consumption, climate change and population growth have been described in a book by the American writer Thomas L. Friedman. He fears the worst, but hopes for the best.

    Friedman points out that the green economy（经济）is a chance to keep American strength. "The ability to design, build and export green technologies for producing clean water, clean air and healthy and abundant food is going to be the currency of power in the new century."

    The morning after an evening flight with my then three-year-old daughter, I couldn't wait to get her to school. I was tired from the anger, and her inability to communicate because of her slowed language development.

    As I accompanied her into the car, I felt desperate. Nothing was right with our world. She had been born around the same time the nation was witnessing the birth of another Great Recession(经济萧条). My job and my house had been victims. Then this happened. My child's language delay was identified, but doctors struggled to properly diagnosis her. I felt like we both needed to be rescued.

    I returned that afternoon as disenchanted with the little girl I loved as when I left.

Walking slowly toward the school's playground gate, I found her preschool teacher racing to greet me.

    “You should have seen her today!” His breathy words were supported by excitement.  I didn't interrupt. “See that climber.” He pointed to a piece of wooden playground equipment that looked like a rock wall. I nodded. “Well, every day since she started school. She's tired and failed to make it to the top.” He took a breath. “And today she made it.

    He expressed his joy just like he'd witnessed her conquering (征服) Mount Everest “She cheered and celebrated! I wish I'd recorded it.” His words comforted me. My daughter had conquered her mountain. As she ran toward me, I recognized something I hadn't before. I saw her perseverance. I saw her strength. I saw a hero.

    Everyday greatness celebrates ordinary people who do unusual things in big and small ways, showing courage, kindness, love and selflessness. We encourage you to click these brief accounts and invite you to share your own story in our community.

    Your next Saturday night takeaway could be brought to you by a robot after a major food delivery company announced plans to use automated vehicles to transport meals. Europe's biggest online takeaway food company Just Eat has partnered with Starship Technologies to deliver food with robots on the streets of London later this month. "Nobody has ever done deliveries with land-based robots," said Allan Martinson, the chief operating officer of Starship.

    The robot courier can travel up to 4 miles per hour for about 10 miles. It uses a GPS signal and nine cameras to navigate (确定方向). Instead of a person arriving at their door, customers could find themselves receiving a notification on their phone that says a robot is on its way and a code to unlock the automated courier. "Put the code in, the robot opens up, and there's your food," said David Buttress, chief manager of Just Eat.

    The robot, which has so far been tested in Greenwich, Milton Keynes and Glastonbury, costs £ 1 to transport within 3 miles, compared with the £3 to £6 it costs for a human courier. To date 30 robots have driven nearly 5,000 miles without getting into an accident or finding themselves picked on by passers-by. They have driven in more than 40 cities around the world, including London and Tallinn, Estonia.

    An initial worry was how the public would react to robots. But Martinson said the public has been calm when passing the delivery machine on the streets. "The most surprising reaction has been the lack of reaction," said Martinson.

    Another significant fear was that people would disrupt (扰乱) the robots, or try to steal them and their contents. To prevent this, the robot is fitted with nine cameras, two way audio, and movement sensors that send a warning if it is lifted off the ground. And it opens only with a passcode provided to the customer via a notification. "It's much easier to shoplift than it is to steal a robot," said Martinson.