Some people think that as more and more people have televisions in their homes, fewer and fewer people will buy books and newspapers. Why read an article in the newspaper, when the TV news can bring you the information in a few minutes and with pictures? Why read the life story of a famous man, when a short television program can tell you all that you want to know?

    Television has not killed reading, however. Today, newspapers sell in very large numbers. And books of every kind are sold more than ever before. Books are still a cheap way to get information and enjoyment. Although some books with hard covers are expensive, many books are printed today as paperbacks (平装本), which are quite cheap. A paperback collection of short stories, for example, is always cheaper than an evening at the cinema or the theater, and you can keep a book for ever and read it many times.

    Books are a wonderful provider of knowledge and pleasure and some types of books should be in every home. Every home should have a good dictionary. A good encyclopedia, though expensive, is useful, too, because you can find information on any subject. Besides, you can have such books as history books, science textbooks, cookbooks, and collections of stories and poems. Then from time to time you can take a book of poems off your shelves and read the thoughts and feelings of your favorite poets.

    Your glasses may someday replace your smartphone, and some New Yorkers are ready for the switch. Some in the city can't wait to try them on and use the maps and GPS that the futuristic eyewear is likely to include.

    “ I'd use it if I were hanging out with friends at 3 a. m. and going to the [bar and wanted to see what was open,” said Walter Choo, 40, of Fort Greene.

    The smartphone-like glasses will likely come out this year and cost between $250 and $600, the Times said, possibly including a variation of augmented(增强的) reality, a technology already available on smartphones and tablets (平板电脑) that overlays information onto the screen about one's surroundings. So, for example, if you were walking down a street, indicators would____showing you the nearest coffee shop or directions could be plotted out and come into view right on the sidewalk in front of you.

    "As far as a mainstream consumer product, this just isn't something anybody needs,” said Sam Biddle, who writes for Gizmodo.com.  “ We're accustomed to having one thing in our pocket to do all these things,” he added, “and the average consumer isn't gonna be able to afford another device (装置) that's hundreds and hundreds of dollars.”9to5Google publisher Seth Weintraub, who has been reporting on the smartphone-like glasses since late last year, said he is confident that this type of wearable device will eventually be as common as smartphones.

    “It's just like smartphones 10 years ago,” Weintraub said. “A few people started getting emails on their phones, and people thought that was crazy. Same kind of thing. We see people bending their heads to look at their smartphones, and it's unnatural,” he said. “ There's gonna be improvements to that, and this a step there.”

    London's transport services offer you a special experience of the city. Here's a round-up of the transport choices available to you.

    London Underground

    There are 11 colour-coded Underground lines. Services run regularly from around 05:00 to 00:30 (Sunday 07:30 to 23:30) on most routes.

Visit tfl.gov.uk/tube for more information.

    Tip:

    Always stand on the right when using the escalators (电动扶梯) at Tube stations. It can get hot and busy on the Tube during peak (高峰) travel times, so you may prefer to travel outside these hours.

    Buses

    A cheap and easy way to travel around London. They generally run from 05:00 to 00:30. Night buses operate on many major routes from around midnight to 05:00, and some operate a 24-hour service.

    It is not possible to pay for your London bus fare in cash. Instead you can pay with a Visitor Oyster card, Oyster card, Travelcard or UK-issued contactless payment card. A single bus journey is £1.50 with an Oyster card or UK-issued contactless payment card.

    To help you get home, if you don't have enough credit on your Oyster card, you will be able to make one more bus journey.

    After this you will need to top up the credit on your card before you use it again. If your contactless payment card has been issued outside the UK, please check tfl.gov.uk/contactless before you use your card to travel on our bus services. For any international transaction fees (手续费) that may apply, please check with your card issuer.

    For more information visit tfl.gov.uk/buses.

    Tip:

    Some bus routes are especially good for sightseeing — try routes 9, 14, 15 and 22. The New Routemaster bus featured in the James Bond film Skyfall and runs on routes 9, 11, 24, 38 and 390.

    If you run out of credit on your Visitor Oyster card, it's easy to add more at:

    Touchscreen ticket machines in Tube, DLR, London Overground and some National Rail stations.

    Around 4,000 Oyster Ticket Stops cross London (Find your nearest one at ticketstoplocator.tfl.gov.uk).

    Travel & Visitor Information Centres.

    London Overground station ticket offices.

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    Last summer, bird-watchers confirmed the discovery of a new species of bird in Cambodia was not an event of particular biological significance, but it was striking for one reason in part. This species of bird was discovered not in an unspoiled rain forest but within the limits Cambodia's capital, Phnom Penh – a city the size of Philadelphia.

What the researchers found was surprising in cities. The medium-sized city in the state about 110 species of birds, over 95 percent of which would have been growing there urbanization. Ecologically speaking, cities are different, concrete buildings. Rather, each unique bio-profile – a kind of ecological fingerprint – that is against the idea of an environment dead zone.

    Of course, it's also true that in the world of birds and plants, as in human society, there is such a thing as worldwide—the city-inhabitants who feel equally at home in San Francisco, Milan and Beijing. Four birds occur in more than 80 percent of the cities studied, and 11 plants occurred in more than 90 percent of the cities. On the plant side, those are seemingly spread by European settlement. In the air, it's the usual suspects: the rock pigeon and many other birds. “They have become completely adapted to urban life,”Katti says. “That's not much of surprise. But they don't actually dominate as much as we think they do.” Those species—occurring in the cities across the globe—represent only a small part of a city's natural varieties.

    Not all cities are equal protectors of native animals and plants, though. One of the biggest predictors for a city's biodiversity is its urban design. Territory as varied as backyards and street trees can lay important roles in greening a city. In fact, the amount of green space is a stronger predictor of the density of biodiversity than a city's size. A metropolis with a sizable network of parks can contain more species per square mile than a much smaller city.

    In a world where architecture, food, language, fashion and commerce are increasingly globalized, a city's native animals and plants can be a kind of identity. There may be neighborhoods in London and Paris that resemble Singapore or Hong Kong. Cities are becoming similar, but their natural environments stand completely apart.