When Abe Lincoln was just a boy, he had to help his father to look after his farm. It was hard work and there weren't any interesting things for him. Abe wanted to go to school, but there was no school there. Abe was sad most of the time.

    Mrs Lincoln loved the boy very much. She tried her best to make Abe happy. One early morning, she got up early and went to the town. That was a long way and it took her a long time to get to the town. She bought something there and went back. And it was late in the evening when she got home.

    The next morning Mrs Lincoln said to Abe, "Today is your birthday. We're going to have a party. "She put some food on the table, and then brought out a present. "A book！"Abe cried. It was an old book, but he liked it. A smile came to his face. He looked up at Mrs Lincoln and said, "Thank you, Mum."

    Karen lived with her parents in the Karoo Basin of South Africa. The Karoo was famous for plant and animal fossils(化石) ,Karen's father was a paleontologist(古生物学家) ,and Karen enjoyed looking at the dinosaur bones in his office. She hoped to discover her own dinosaur someday.

    Every summer, Karen's father invited paleontologists from around the world to the Karoo. As they hiked through the dry land, he would show them fossil samples(样本) within the layers of sedimentary rock(沉积岩) and ash.

    This summer, Karen asked her father if she could go along on the hike. He agreed, but he asked her to stay close by. As they drove to the trail(小径) ,Karen's heart beat quickly with excitement. There were so many places to visit.

    The hike was interesting, but Karen was too curious to stay on the trail. Without asking, she ran down into a nearby ravine(峡谷) and looked among the rocks, Then, he heard her father's voice calling to her. She ran up the side of ravine. Suddenly, she spotted something white and shiny. "Dad!" she shouted excitedly.

    Karen's father stood at the top of the ravine with the other people. They looked worried until Karen pointed to the shiny object. All the paleontologists examined it. They nodded to each other in surprise. It was the skull(骨头) of a dinosaur nobody knew about! The paleontologists took pictures and shook Karen's hands. Her father smiled, "Karen." he said. "You are now the youngest paleontologist in the Karoo!"

    O. Henry, a famous American writer of short stories, was born in North Carolina in 1862. O. Henry was a pen name. His real name was William Sydney Porter. When he was a young boy, he did not go to school for long because of being born in a poor family, but he tried to teach himself everything he needed to know.

   When he was about 20 years old, O. Henry went to Texas. There he tried different jobs. He first worked on a newspaper, and then had a job in a bank. But he got himself into some trouble. Some money went missing from the bank. O. Henry was believed to have stolen it, so he was sent to prison(监狱). During the three years in prison, he learned to write short stories. After he got out of prison, he went to New York and went on writing.

   He wrote mostly about New York and the life of the poor there. People liked his stories, because almost all of them finished with a sudden change. This made the readers surprised.

"Just because you can't see something, that doesn't mean it's not there." This old saying is quite meaningful for British artist Willard Green. The items he creates are so tiny that most of them fit on the head of a pin (针). You can see them clearly through a microscope (显微镜).

At every one of his art shows, people always ask the same question, "▲"

The answer is "Very, very carefully." So carefully, in fact, that he actually slows his breath down and works in between breaths. Willard usually works patiently under a microscope using special tools that he creates. To paint his works, he uses the hair from a fly(苍蝇) as a paintbrush.

Creating these detailed works is a very long and difficult process, and it isn't always enjoyable. "It is a terrible dream when I start but a nice dream when I finish," he says. A single item can take at least several weeks to complete.

People have asked Willard why he chose to do something that needed effort and took time. When he was young, Willard was not a strong student. He had difficulty in reading and spelling words. Some kids used to call him a loser. This made him feel small, so working on little things helped him to feel big. The smaller his work got, the bigger he felt. A newspaper reporter said, "Though his works of art are small, Willard is a great artist!"