The Colonel（上校） asked Ashenden a good many questions and then suggested that he had particular qualifications for the Secret Service. Ashenden knew several European languages and the fact that he was a writer provided excellent cover: on the pretext（借口） that he was writing a book he could, without attracting attention, visit any neutral country.

    It was while they were discussing this point that the Colonel said, "You know you might get material that would be very useful to you in your work. I'll tell you an incident that occurred only recently. Very dramatic. A foreign government minister went down to a Mediterranean resort to recover from a cold and he had some very important documents with him that he kept in a dispatch case（公文箱）. A day or two after he arrived, he picked up a beautiful blonde at some restaurant or other, and he got very friendly with her . He took her back to his hotel, and when he came to himself in the morning, the lady and the dispatch-case had disappeared. They had one or two drinks up in his room and his theory is that when his back was turned the woman slipped a drug in his glass.

    "Do you mean to say that happened the other day?" said Ashenden.

    "The week before last ."

    "Impossible," cried Ashenden. "Why! We've been putting that incident on the stage for sixty years, we've written it in a thousand novels. Do you mean to say that life has only just caught up with us?"

    "Well, I can guarantee the truth of the story." said the Colonel, "And believe me, the government has been put to no end of trouble by the loss of the documents."

    "Well sir, if you can't do better than that in the Secret Service," sighed Ashenden, " I'm afraid that as a source of inspiration to the writer of fiction, it's washout（失败）."

    Reading can be a social activity. Think of the people who belong to book groups. They choose books to read and then meet to discuss them. Now, the website BookCrossing.com turns the page on the traditional idea of a book group.

    Members go on the site and register the books they own and would like to share. BookCrossing provides an identification number to stick inside the book. Then the person leaves it in a public place, hoping that the book will have an adventure, traveling far and wide with each new reader who finds it.

    Bruce Pederson, the managing director of BookCrossing, says, “The two things that change your life are the people you meet and books you read. BookCrossing combines both.”

    Members leave books on park benches and buses, in train stations and coffee shops. Whoever finds their book will go to the site and record where they found it.

    People who find a book can also leave a journal entry describing what they thought of it. E-mails are then sent to the BookCrossing to keep them updated about where their books have been found. Bruce Pederson says the idea is for people not to be selfish by keeping a book to gather dust on a shelf at home.

    BookCrossing is part of a trend among people who want to get back to the “real” and not the virtual（虚拟）. The site now has more than one million members in more than one hundred thirty-five countries.

    Cao Zhawa has been planting trees for most of his life. He lives and works in the heart of Mu Us Sandyland, an area in the southwest part of Inner Mongolia.

    In 1958, when he was just 16 years old, Cao started planting trees. Cao's trees now cover an area of more than 1.3 million square meters. Cao's forest is worth an estimated 10 million yuan and can produce 100,000 kilograms oxygen, enough to sustain a full-grown adult for nearly a year.

    Mu Us Sandyland is one of the places in China most affected by erosion(侵蚀) and desertification. The amount of annual rainfall ranges from 150 to 300 millimeters, while evaporation(蒸发) between 2,000 and 3,000 millimeters. Cao recalls that his growing-up was troubled by sandstorms. This was one of the factors that motivated Cao to join and stay on the tree-planting program.

    Popularly known as the "Green Great Wall", the project, which is set for completion in 2050, would be a 4, 800-kilometer greenbelt of trees and shrubs(灌木) protecting the area from strong winds and preventing soil erosion. Since the start of the Three-North Shelter Forest Program, millions of people have joined in and become a vital part of the plan.

    However, the tree-planters face a host of challenges, with watering the most difficult among them. "When I was young, the level of groundwater was high," said Cao, "But with less rain, the trees are hard to plant and keep alive."

    Planting trees has also become harder for Cao as he ages. However, he doesn't want to leave the forest in the care of his children, and he insists the land belongs to the government. "When I die, I just want to be buried under the trees," Cao said. "Then I will be with them forever."

Back in April 1939 and armed with $5,000 provided by the Rockefeller Foundation, professor Frank Cyr at Teachers College, Columbia University took a tour of ten states to make the research about school transportation problems. What he found was that many students had no dependable way to get to school and the ones who did often travelled in unsafe buses in the over 100,000 school areas.

Seeing a need to fix this problem, Cyr organised a meeting—one that would change the future of school buses forever. School officials and transportation experts met to set much-needed standards for buses, including those for colour, height and width as well as safety rules that hadn't been set before or that were different in every state.

There were many different bus colours in the US before this meeting; several areas even planned to have red, white and blue buses as a way of encouraging students to love their country. Cyr presented his new choice to education officials, a reported "50 shades( 色度) changing from lemon yellow to deep orange red". The matter was settled quickly. Yellow, or "National School Bus Glossy Yellow", was chosen because it was quite striking, making the school bus easy to be seen. Besides, it made the bold(黑体的), black writing on the side of each bus clear. (The bold, black writing gives information about each school area, telling students which school bus they could take during early morning and late afternoon hours.) Thirty-five states made the changes quickly, and every state took them on

board by 1974.

Being recognised as the "father of the yellow school bus", Frank Cyr has surely influenced your life if you ever rode a school bus or saw that noticeable colour pulling up to your stop on a dusky morning.

In 1835, William Talbot finally succeeded in producing a photograph of his country house. He declared that his was the first house ever known to have drawn its own picture. The drawing was formed "by the action of light upon sensitive paper." Photography offered nature a "pencil" to paint herself through optical （光学的） and chemical means alone.

By the mid-nineteenth century, people no longer needed to hire a draftsman to draw detailed images because the process could be completed instantly with a camera. Advocates for the technology stated that not only was it more precise than the human hand-it was faster and cheaper.

The removal of human fallibility in the creating process was one of photography's biggest selling points, but this also started debates about the new medium's implications for visual culture. Could images made largely by a machine be considered art? If so, where did human creativity, fit in this process?

As the twenty-first century becomes increasingly automated （自动化的）, more and more people attempt to identify where human agency exists in the technologically driven world. Images generated with artificial intelligence by companies like OpenAI are stimulating questions like those that emerged with the coming of the photograph. By typing a sentence, users can generate "new" images composed from images collected across the internet. The result has been a flood of Al-generated images in places that are previously unique to human authors. Painting competitions, commercial graphic design and the fashion of portraiture（肖像） have all since collided with the technology in troubling ways.

The fine arts were thought to be a final hold-out of human creativity, but the surprisingly high quality of Al-generated images is producing deeper questions about the nature of originality. If the history of photography tells us anything, it's that the debate won't be settled quickly; straightforwardly or by the institutions we typically associate with cultural gate-keeping.