Auckland is New Zealand's largest urban area with a population of just over a million people. It is not, however, the capital, although it was at one time, until the capital moved to Wellington. Auckland is the center of commerce and industry, and is perhaps the most energetic, prosperous and multicultural city in New Zealand.

    The city's landscape is decided by volcanic hills, the twin harbors, bays, beaches and islands. Its nickname “the city of sails” is very suitable. Auckland has more boats for each person than anywhere else in the world.

    Auckland has many volcanic hills, many of which currently afford great views of the city. And Auckland's geography is such that shiny waters seem to attract people from every point. It is a water lovers' best place, with some of the best beaches, swimming, diving, fishing, sailing, windsurfing and water sports in the country.

    Wellington is the capital city of New Zealand. It is also the cultural, administrative and political center of the country. Two aspects of the city that will immediately strike any visitor are the harbor and hilly landscape. Everywhere you go, the sounds and the smell of the ocean hang in the air, and green hills and valleys wrap you in a bear-hug embrace. At night, Wellington offers a spectacular, shimmering(闪闪发光的) cityscape that is unlike almost anywhere else in the world. Even after seeing it for a hundred times, it takes your breath away.

    Wellington is a scenic, windy and diverse place. It has some of the best museums, art galleries, restaurants, and coffee houses in the country. It is the storehouse for the nation's historic, cultural and artistic treasures. Being the first place where European settlers arrived, it also boasts lots of historic streets and buildings.

    Wellington is host to an excellent Festival of the Arts every two years.

    Dolphins (海豚) live in a dark underwater world. It's often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.

    Only other dolphins understand what the sounds mean. Scientists haven't uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins — and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.

    Dolphins often hunt by themselves but still need to stay connected to the group. Since they can't always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they're a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.

    What's amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It's creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother's or group members' whistles.

    When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.

    Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins' communication.

    Love to sink into your chairs and relax when you get to school. Then you will not be happy to hear that schools all over the world are seriously considering exchanging traditional desks for ones with no seats at all — Yes, that means you will be encouraged to stand through those already too long math and science lessons! Why would anyone even think of putting kids to such cruelty. Experts say it improves their health and helps fight obesity. While that may seem a little far-fetched (牵强的), the officials at the few schools around the world seem to agree.

    Among them are educators from the College Station Independent School District in Texas, who recently completed a week-long experiment involving 480 students across three elementary schools. The 374 kids that agreed to participate in the study were provided a device that helped record step count and calorie consumption over the entire period.

    All 25 teachers involved in the study reported that students appeared to be more alert and concentrate better, when allowed to stand. The one thing that did surprise the researchers was that younger kids were more willing to stay standing than kids in higher grades. They believe this may have something to do with the fact that after years of being asked to “sit still”, older kids have a harder time adjusting to this unexpected freedom.

    American schools are not the only ones reporting success with stand-up desks. Four schools in Perth, Australia, which have been testing them since October 2013, have seen similar results. In May 2014, Grove House Primary School in West Yorkshire, became Europe's first test one, with a seven-week trial that involved the use of desks made by Ergotron in their fifth-grade classrooms. While official results are not out yet, early reactions from both teachers and students, have been extremely encouraging.

    The findings of these studies and others done previously, all seem to mean that allowing kids to move around in classrooms is a win-win for students and teachers — it helps kids get healthier and provides educators with a more attentive audience.

    In the mid-nineteenth century, as iceboxes became increasingly common in American homes, there were efforts to find cheaper and more reliable sources of ice. In the eighteen-thirties, scientists discovered a way to make ice, which is similar to how a refrigerator works. In 1860, there were four artificial-ice plants in the United States; in 1889, there were about two hundred; by 1909, there were two thousand. Ice now came from factories, not ponds, and it was turned out in three-hundred-pound blocks by lowering steel cans of pure water into tanks of refrigerated salted water. Kept below thirty-two degrees, the salted water did not freeze, but the water in the cans did. Those cans were then lifted from the tank, and the ice was taken out of them.

    The ice blocks were delivered to home users, and to the fishing and chemical industries. On the railroads, trains carrying fruit and vegetables had cars at each end filled with blocks of ice. It was a growing industry.

    The great trade began to fall away in the middle years of the twentieth century. The railroad business shrank, and, in the immediate postwar period, block ice lost out to home refrigerators and then to small commercial ice machines. By the nineteen-sixties, things looked very dark. “It was scary,” Dan Ditmar, an ice expert in San Antonito, told me. “Your biggest customers were cafeterias and country clubs, and you'd go out there and they'd say, 'We don't need you anymore; we've got ice machines.'”

    Then the companies that survived the slump（a slump is a period when there is a reduction in business）began investing（投资）in newly developed ice-cube machines, and by the late sixties American ice was becoming a packaged-ice business. And packaged ice was exactly what the country needed. These were years of increased leisure time—more barbecues, more cars, and more houses by the lake. “Things exploded in the nineteen-seventies, Paul Handler said. Ice cubes evolved. They became hugely popular^ shoveled（铲）here and there into picnic coolers and fast-foof sodas. They became noisier.

An increase in a country's working-age population is a blessing. Lots of workers support relatively few children and retired people. So long as the labor market can absorb an increasing number of job-seekers, output per head will rise. That can boost savings and investment, leading to higher economic growth, more productivity gains and developmental speed-up. Yet for countries that fail to seize this opportunity, the results can be tough. 

Consider Thailand. It is rapidly aging. In 2021, the share of Thais aged 65 or over hit 14%, a figure that is often used to define an aged society Soon Thailand will, like Japan, South Korea and most Western countries, see a decreasing supply of workers and flagging productivity and growth without extraordinary measures. Yet unlike Japan and the rest Thailand is not a developed country. It has got old before it has got rich. 

This is a big barrier to Thailand's future development. To protect its aging citizens, many of whom are poor, Thailand's government will have to spend more on health care and pensions (养老金). This will make it harder to invest in productivity-boosting skills and infrastructure (基础设施). And where Thailand goes, many developing countries will follow.

One conclusion is that countries with a working-age burst need seeking more economic growth out of it. India may never have a better chance than the present. It is widely accepted that privatization and looser foreign-investment rules could raise its growth rate. 

Another conclusion is that developing countries need to start planning for old age earlier. They should reform their pension systems, including by raising retirement ages. They should encourage financial markets, providing options for long-term saving and health insurance. And they should try harder to increase female participation in the labor force. Getting more women into jobs would help deal with the fact that women live longer than men, but tend to have less savings and pensions, leaving them in difficult situations in old age.