How cool can libraries be in an era of iPods and Kindles? Morethan you think．Only if youknow where to go.

Central Library: Seattle, Washington, United States

The Central Library in Seattle is modern and fashionable and hastourists from around the world paying visits and taking tours. It was designedby Dutch architect Rem Koolhaas and American designer Joshua Ramus. Tours beganin 2006, two years after its opening. The library holds various artexhibitions, book signings and other events, while visitors can stop by theChocolate cart for a coffee and scan through the gift shop anytime.

Trinity College Library: Dublin, Ireland

The Trinity College Library in Dublin is the oldest library inIreland, founded in 1592 by Queen Elizabeth I. It is the largest single libraryin the world, also known as the Long Room, which contains more than 200,000 ofthe library's oldest books. The Long Room houses one of the oldest harps（竖琴）in Ireland.Dating to the 15th century, the old harp is the model for the symbol foreland.

Geisel Library, University of California: San Diego, UnitedStates

At first glance, it looks like a spaceship. Architect WilliamPereira, who helped design actual space launch facilities at Cape Canaveral inHouston, Texas, designed the library in 1970. It has been featured in sci-fifilms, short stories and novels. The library hosts “Dinner in the Library,”which invites readers for cocktails, and also a special speech fromdistinguished authors．

TU Delft Library: The Netherlands

The library at the Delft University of Technology wasconstructed in 1997 and has more than 862,000 books, 16,000 magazinesubscriptions and its own museum．The buildingitself exists beneath the ground, so you can't really see the actual Library.What makes it interesting is the roof, which is a grassy hill. The roof covers5,500 square meters. And it has become one of the most striking and greeneststructures in the area.

    British Airways booking secrets-and the best late deals this week: Short holidays and European city breaks.

    Dublin from $ 109 pp: Enjoy the Emerald Isle without the St Patrick's Day crowds. Departing 20th March, this package includes a two night stay at the four-star Kings Wood Hotel Citywest and return flights from London Stansted. Click here.

    Bruges from $ 159 pp: Treat mum to a mother's day city break in the medieval, fairly-tale town of Bruges and enjoy canal-side strolls and a nice helping of culture. Price includes two nights at the four-star NH Brugge with travel from London St Pancras, departing 20^th March. Click here.

    Madrid from $ 166 pp: Fly from Liverpool on March 27 for three nights' B& B at the three-star Espahotel Plaza de Espana. Real Madrid don't have a football game then, so sec if Ronaldo fancies a cerveza. Click here.

    French Alps from $ 499 pp: Save over $ 320 each on a week's skinning at Les Arcs 2000, staying catered at the Chalet Vanoise. Based on two sharing and includes flights from Manchester on March 18 and transfers. Six-day lift passes from $ 219, equipment hire from $ 65. Click here.

    Tenerife from $ 289 pp: Get your tan on early with a trip to the European home of beaches: Tenerife, with its postcard perfect golden sand. Spend seven nights at the four-star Hotel Spa La Quinta Park Suites, departing 6^th May and including return flights. Click here.

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    With the development of the television and the Internet, many people have changed their hobbies and the way that they enjoy their free time. Because of the television and the Internet, many people spend less time reading, so the aim of this article is to give reasons why people should read just for pleasure. The reasons that I give you are quite simple: to improve your knowledge, to have more fun, to make your imagination（想象）fly, to find new ways to express your ideas, and to have a better understanding of life.

    Firstly, you can improve your knowledge when you read. There are nil kinds of good books to choose from. People who read more usually have a better idea about life than those who do not read so often.

    Secondly, you can have fun and increase your imagination by reading books Children have very good imaginations, so parents need to read lots of stories that feed their imagination. Adults should try to develop their imagination by reading books that make them think amazing things.

    Finally, no matter how old you are, it can help you to have a better understanding of life and express your ideas to others in a simple and correct form.

    So I suggest that you read more. I know that many of us like to play on the Internet when we are free, but we must also not forget to read books. Try to choose good books in the beginning, and then I'm sure that you will never stop reading.

    Can exercise during childhood protect you against memory loss many decades later?Exercise early in life seems to have lifelong benefits for the brain,in rats at least.

    "This is an animal study,but it shows that physical activity at a young age is very important一not just for physical development,but for the whole lifelong track of cognitive（认知的）development during ageing,"says Martin Wojtowicz of the University of Toronto,Canada."In humans,it may delay the appearance of Alzheimer's symptoms（阿兹海默氏症）,possibly to the point of preventing them."

    Wojtowicz's team divided 80 young male rats into two equal groups,and placed running wheels in the cages of one group for a period of six weeks.Around four months later—when the rats had reached middle age—the team taught all the rats to connect an electric shock with being in a specific box.When placed in the box,they froze with fear.

    Two weeks later,the team tested the rats in three situations: exactly the same box in the same room,the same box with the room arranged differently,and a completely different box in a different room.

    The rats without access to a running wheel when they were young now froze the same percentage of times in each of these situations,suggesting they couldn't remember which one was dangerous.But those that had been able to run in their youth froze 40 to 50 percent less in both changed box settings.

    “The results suggest the amount of physical activity when we're young,at least for rats,has influence on brain and cognitive health—in the form of better memories—when we're older,"says Arthur Kramer of Northeastern University in Boston,who has found that,in humans,exercise promotes the growth of new brain cells.

    I have a neighbor who is a capable, fashionable, seventy-year-old, single woman. Her name is Grace. Grace was laid off from her job a little over two years ago and has been living off her savings ever since but not officially "retired". Grace called me up one day about this time last year and asked if I had a ladder. She needed to clean out her gutters (水槽) on the roof and wanted me to hold the ladder.

    She didn't want me to climb up and clean the gutters. She just wanted me to hold the ladder. As it happened I did have a ladder. I said: “The leaves are going to fall off the trees in a month, why don't we wait till they finish and do it then?” She agreed and naturally we didn't talk about it again until spring. Spring in Tennessee is wild and we talked about it over the course of three weeks in which it rained nearly every day, then I got busy and Grace went into seclusion (隐居).

    A couple of weeks ago, she told me she'd been spending too much money and decided to apply for a bar tending job at a local hotel. "Now I don't know about you all but I'd never considered what it would be like to apply for and begin a new job at the age of seventy. I'm fifty-three and the older I get, the more I think about how great it'll be if I can just get out of bed when I'm seventy." Anyway, she got the job, serving the bar and tending banquets at the hotel.

    The day when she left for her training at 6 am, I walked across the street with my ladder and cleaned out her gutters.

    The month of March was a milestone for supporters of renewable energy in the U.S. For the first time, wind and solar power accounted for more than 10% of the country's electricity—up from less than 1% at the turn of the century. And total wind and solar power-plant capacity(发电量) is expected to grow more than 30% over the course of this year and next, according to the Energy Information Administration.

    Such forecasts have led many scientists and policymakers to think that moving a large part of the nation's power supply to renewable sources—as cities from Miami Beach to Salt Lake City have promised to do—may not be as far-fetched as once thought. But like any debate, there are dissenters, including those inside the federal government. Their argument is that the nation demands an uninterrupted supply of electricity and cannot count on sun, wind and natural gas to provide it. “You need solid hydrocarbons(固体碳氢化合物) on-site for rising peak demand,” Environmental Protection Agency administrator Scott Pruitt said on Fox Business in May, referring to the importance of coal as a power source.

    Many experts say the government's concern fails to account for how the power grid(电网) has improved in recent decades. Utility companies(公共事业公司) have developed innovative ways to move electricity from place to place to account for variation in weather. Battery technology can store power for use when renewable sources cannot operate, meaning solar power can be used on days when the sun doesn't shine. And the nation's vast supply of natural gas can be turned into usable energy with the flick of a switch.

    “I don't think 5 or 10 years ago I'd be comfortable telling you we could not sacrifice reliability when we're going to have 35% of our energy come from wind,” said Ben Fowke, CEO of the utility company Xcel Energy, at a recent conference. “I'm telling you, I'm very comfortable with that today.”

    Indeed, many parts of the country are already close to that reality. In some regions, like Iowa and Kansas, renewable energy supplies more than 25% of the electricity. The market has shifted so far in favor of natural gas and renewable energy that even the most concerted federal effort is unlikely to stop its growth. Any attempt to slow the growth of wind and solar will face strong pushback. “If anyone wants to do away with it,” Republican Senator Chuck Grassley told Yahoo News of the federal government's potential cuts to wind energy, “he'll do it over my dead body.”

    But the federal government could slow the acceleration—and with billions of dollars in private and public investments at risk, the pace of change matters. Decisions made today will shape the future of the nation's energy grid for decades to come.