He was the baby with no name. Found and taken from the north Atlantic 6 days after the sinking of the Titanic in 1912, his tiny body so moved the salvage (救援) workers that they called him “our baby.” In their home port of Halifax, Nova Scotia, people collected money for a headstone in front of the baby's grave (墓), carved with the words: “To the memory of an unknown child.” He has rested there ever since.

    But history has a way of uncovering its secrets. On Nov. 5, this year, three members of a family from Finland arrived at Halifax and laid fresh flowers at the grave. “This is our baby,” says Magda Schleifer, 68, a banker. She grew up hearing stories about a great-aunt named Maria Panula,42, who had sailed on the Titanic for America to be reunited with her husband. According to the information Mrs. Schleifer had gathered, Panula gave up her seat on a lifeboat to search for her five children -- including a 13-month-old boy named Eino from whom she had become separated during the final minutes of the crossing. "We thought they were all lost in the sea," says Schleifer.

    Now, using teeth and bone pieces taken from the baby's grave, scientists have compared the DNA from the Unknown Child with those collected from members of five families who lost relatives on the Titanic and never recovered the bodies. The result of the test points only to one possible person: young Eino. Now, the family sees no need for a new grave. "He belongs to the people of Halifax," says Schleifer, "They've taken care of him for 90 years."

    Adapted from People, November 25, 2002

    It used to be mostly the military that used small, unpiloted aircraft, called “drones.” The little planes were very costly. But as they have dropped in price more people have begun to use them. Rescue workers and farmers are among the new users. Moviemakers are using drones to film from the sky. Historians use them when they explore ancient buildings. Rescue workers use them to look for people. And now farmers are using them to watch over their crops.

    Romain Faroux is a French businessman who starts companies. His father was a farmer. He believed drones could help farmers. He helped create a company that developed a small drone that could be controlled by people on the ground. They called it “Agridrone.” It uses a special “optical sensor” to examine crops. He says the technology used is similar to that used by smartphones-except it has wings.

    A computer program directs the drone to fly over the crops. The sensor on the drone records four different-colored “bands” of sunlight that are reflected off the crops.

    Jean-Baptiste Bruggeman is a farmer. He says the drone flies over his crops at different times of the season. He says this provides a lot of information about his crops. He says the drone pictures show him the exact amount of fertilizer the crops need. He says it also shows exactly where the fertilizer is needed. Some areas of a field may need more than others.

    As a result, Mr. Bruggeman says there is reduced nitrogen from the fertilizer after the harvest. This helps nature. Romain Faroux says farmers use information gathered by the Agridrone to place fertilizer only in areas where it was needed. Before they used the drones, farmers would put the same amount of fertilizer everywhere.

    Drones also save time because farmers can examine up to three hectares in about a minute.

    Paul and Jason were brothers who lived and worked on neighboring farms. For 35 years they farmed side by side, sharing machinery and goods as needed, without a single problem.

    However, one autumn, things changed. It began with a tiny disagreement about a horse, which grew into a major difference. The difference led to angry words, followed by weeks of silence between the two brothers.

One morning there was a knock on Paul's door. He opened it and saw a builder holding his toolbox. "I'm looking for a few days' work." the builder said. "Are there any jobs here I could help with?"

"Yes," answered Paul, extremely pleased to see the builder. "I do have a job for you. Look at that farm across the creek(小溪).That's my brother's farm. That creek used to be a grass field, but last week my brother dug a path from the river and made the creek. But I'll go him one better. See that pile of wood? I want you to build me a fence, two meters tall, so 1 won't need to see him anymore."

The builder said thoughtfully. "I think I understand the situation and I'll be able to do a job that pleases you."

    Paul had business in town that day and left the builder to his work. When he returned, the builder had just finished his job. Paul was shocked. Instead of a fence there was a bridge, stretching from one side of the creek to the other.

As Paul stood on the bridge, staring in amazement, his younger brother Jason, came across, and took Paul's hand. "You are a good man to have built this bridge after all I've done," said Jason.

Then, Paul, with tears in his eyes, said to the builder who was packing his bag to go, "Thank you so much. Please stay. I have much more for you to do."

"I'd love to." the builder said quietly, "but, I have many more bridges to build."

    Stay-at-home kids are named “generation nini” in Spain. They are those adults who still live at home and are neither working nor studying. But the problem is not limited to Spain. It is a worldwide problem.

    In Italy, they are known as “bamboccioni” or big babies. There are nearly 60 percent of 18-34-year-old adults still living in their parents' home, up from almost 50 percent since 1983. Once kept there by the love for their mama's home-cooked food, the economic crisis(经济危机)has seen a rise in adults left unable to hold down a steady job or afford a home of their own. Last year, an Italian government minister admitted that his mother washed his clothes and made the bed for him until he was 30. He demanded a law forcing young Italians to leave their parents' home at 18 to stop them becoming hopelessly dependent on their parents.

In the UK, the government has made the term NEETS—not in employment, education or training for these children. In England alone the percent of NEETS aged 19-24 surged to 18.8 percent of the age group-in the last quarter of 2010, up 1.4 percent on the same period a year before. The number of British men in their 20s living with their parents has risen from 59 percent to 80 percent in the past 15 years, while the number of women has risen from 41percent to 50 percent. The average age of the first-time house buyers is now 38.

    In the US, the problem is known as the “full nest syndrome(综合症)”. Adults there are left struggling to support adult children who have stayed at home with student debts and facing few job opportunities in a weak economy. A recent study showed almost a third of American adults aged 34 and under are living with their parents

    Since English biologist Charles Darwin published On the Origin of Species in 1859, scientists have vastly improved their knowledge of natural history. However, a lot of information is still of the speculation, and scientists can still only make educated guesses at certain things.

    One subject that they guess about is why some 400 million years ago, animals in the sea developed limbs (肢) that allowed them to move onto and live on land.

    Recently, an idea that occurred to the US paleontologist (古生物学家) Alfred Romer a century ago became a hot topic once again.

    Romer thought that tidal (潮汐的) pools might have led to fish gaining limbs. Sea animals would have been forced into these pools by strong tides. Then, they would have been made either to adapt to their new environment close to land or die. The fittest among them grew to accomplish the transition (过渡) from sea to land.

    Romer called these earliest four-footed animals “tetrapods”. Science has always thought that this was a credible theory, but only recently has there been strong enough evidence to support it.

    Hannah Byrne is an oceanographer (海洋学家) at Uppsala University in Sweden. She announced at the 2018 Ocean Sciences Meeting in Oregon, US, that by using computer software, her team had managed to link Homer's theory to places where fossil deposits (沉积物) of the earliest tetrapods were found.

    According to the magazine Science, in 2014, Steven Balbus, a scientist at the University of Oxford in the UK, calculated that 400 million years ago, when the move from land to sea was achieved, tides were stronger than they are today. This is because the planet was 10 percent closer to the moon than it is now.

    The creatures stranded in the pools would have been under the pressure of “survival of the fittest”, explained Mattias Green, an ocean scientist at the UK's University of Bangor. As he told Science, “After a few days in these pools, you become food or you run out of food... the fish that had large limbs had an advantage because they could flip (翻转) themselves back in the water.”

    As is often the case, however, there are others who find the theory less convincing. Cambridge University's paleontologist Jennifer Clark, speaking to Nature magazine, seemed unconvinced. “It's only one of many ideas for the origin of land-based tetrapods, any or all of which may have been a part of the answer,” she said.

    With golden sunshine and a gentle breeze（微风）, autumn is the most beautiful seasons in the year. This is a great time to go outside and have fun. Go to a valley to see red maple trees, go and pick fruit in an orchard or find an open field to fly your kite in.

    However, for many high school students, these great activities may be just a dream. With plenty of work to do, they spend all their hours indoors, struggling for a high mark in their exams. Of course, study is one of the most important things for teenagers. But life is definitely much more than that.

    Sometimes we spend so much time studying that we forget how to make life wonderful. In doing so, we lose the real purpose of life —to be a valuable and happy person. To enjoy just how great it is to be alive, we have to put down our books and pens and look around us. Students, take some exercise to improve your health, talk with your parents and friends for understanding and walk around outside to refresh（振作）our body and mind.

    Going out and enjoying the beautiful countryside often helps our creativity in our work. Chinese craftsman, Lu Ban created a saw to help woodworkers. But if he hadn't walked outside, he would not have been inspired by a kind of toothed（锯齿状的）grass. We could also suppose if Newton hadn't rested under that apple tree, then he wouldn't have been hit by an apple, and his classic（经典的）theories would not have come out.

    Going out is not only a break from hard work, but a chance to add to life experience. So come on, give your brain a good rest. Step out of the books and get your bag ready for an autumn outing. We are sure you will get much more than knowledge from the exciting journey.