“It's just a story,”you may think. But new research has found that crows' brains may sometimes be better than those of 6-year-old children.

In a recent experiment, American scientist Corina Logan and her team caught six crows to test them. The crows and children had to choose between two sets of tubes(试管). They had to drop stones in and get water.

With the red set, when they dropped a stone into a wide tube, the water level raised in a connected narrow tube. The blue set of tubes, however, had no connection between them.

Children aged 7 to 10 were able to learn the rule. Children aged 4-6, however, failed.Five of the six crows failed the test. But Kitty, a 6-month-old crow, passed it. She put most of the stones into the red tubes.

So, could a bird be more clever than a kindergartner? Don't be too quick to say no.

    17-year-old Brennan Agranoff, a colorblind boy, started his custom sock business in middle school, with a small loan(贷款)he got from his parents. Up till now, he has sold over $1 million worth of socks online in the last four years.

    Brennan thought of the idea for his custom sock company at just 13 years old. He was attending a high-school basketball game in his hometown of Sherwood, Oregon, and noticed that many kids his age were wearing the same white Nike sport socks. The boy told himself that if these white plain sacks were so popular with kids, then some cool custom designs would surely be an even greater hit.

    But the boy didn't tell his parents about the business idea immediately. He spent six months researching things like printing machines and technology and drawing up a business plan. Only when he had everything planned out did he ask his parents for a loan. "They thought the idea was a little out there," Brennan recently told CNN Money, but he kept pushing, and finally received a $3,000 loan to start his company. Then he began to work on his own designs. The fact that he was colorblind didn't stop him and he has created aver 200 designs now.

    Business was slow the first year, but then Brennan started pushing his HoopSwagg products heavily on the Internet. Orders soon started coming in in large numbers, and HoopSwagg became a popular brand among custom sock lovers. Right now, his designs can be found on HoopSwagg website, Amazon and eBay.

    Four years after starting his business, Brennan has achieved great success while balancing(平衡)school, house chores and his social life. And he says he loved every minute of it.

    It was about 1：00 in the morning. It was bright light in my neighbor's kitchen. I thought he might be having midnight food so I went back to my bed. Soon, there was a burning smell and I realized there must be something wrong. I jumped out of bed at once and went to have a look. I saw fire coming out of his kitchen. I shouted, "Fire！Fire！"But nobody heard me. I ran quickly to my house and called the Fire Department(消防队) and went back to my neighbor's house.

    I knocked at the door and called my neighbor's name, but there was no answer. I tried to break into the house and saved a cat and a chicken. Then I poured water through the kitchen window but it was no use, because the fire was too big. Luckily, the firemen arrived and put out the fire in time.

    When my neighbor came back, he was sad because his kitchen was burnt down, but he thanked me for calling the Fire Department and saving his pets.

    A week later, my neighbor invited me to his home for dinner. In his new kitchen, he took a photo of me. Later on, he gave me the photo as a gift. It made me happy.

    In 1978, I was working as a nurse in a small town about 270km away from Sydney, Australia. I was looking forward to having five days off from duty. Unluckily, the one train a day to my home in Sydney had already left. So I thought I'd get a ride.

    I waited by the side of the highway for three hours, but no one stopped for me. Finally, a man walked over and introduced himself as Gordon. He said that although he couldn't give me a lift, I should come back to his house for lunch. He noticed me standing for hours in the November heat and thought I must be hungry. I was doubtful as a young girl but he promised me I was safe, and he also offered to help me find a lift afterwards. When we arrived at his house, he made me sandwiches. After lunch, he helped me find a lift home.

    Twenty-five years later, while I was driving to a nearby town one day, I saw an elderly man standing in the glaring heat, trying to get a ride. I thought it was another chance to repay(回报) someone for the kindness I'd been given many years earlier. I pulled over and picked him up. I made him comfortable on the back seat and offered him some water.

    After a few moments of small talk, the man said to me, "You haven't changed a bit, even your red hair is still the same."

    I couldn't remember where I'd met him. He then told me he was the man who had given me lunch and helped me find a lift all those years ago. It was Gordon.

    When I was a university teacher in Ningbo, I told my students that it would be wise to keep their smartphones in their backpacks. They were young adults. I didn't want to take their phones， nor could I shout at them. You can guess what happened.

    Some students were polite, using their phones between activities. Others would rudely text their friends during lessons, sometimes even while I talked to them. One young woman, K, openly played a game at her desk with earphones!

    Why did such a situation appear? I began to think my class was boring (probably true!) and that my students hated me (I could understand). But what could I do? I couldn't fail every student. Maybe I was just a boring teacher.

    With all the recent talk about banning(禁止) smartphones at schools, you might think I'm in favor. I'm actually not so sure. This technology isn't going away. Teachers probably need to change as much as students.

    I designed activities to let them use pens and paper, and moving around the room to talk to classmates. It kind of worked! I also found ways to use their phones. Things like research, translation and creative projects. I found that my students worked hardest on these activities.

Phones might not be the biggest problem. Once, walking at school, I saw K standing alone in the dark. I could see her face, lit up by her mobile game. Maybe smart phone addiction (上瘾) at school is a sign of loneliness or a boring teacher.

    Abdul Sadiq, an Afghanistan's only professional cyclist, began by training his daughter. And when she competed successfully abroad, he set up the team. It is the world's most unlikely sporting team, because the sport breaks taboos in a country where in many traditional communities, women are not allowed out of the house.

    The head coach faces frequent threats and the girls' families do not always approve "If it's not their fathers trying to stop them, it's a brother or uncle."

    Two members of the team, Massouma, 18, and Zarab, 17, are sisters. Their father and their brothers approve, but they know that their uncles complain to their father. "They will never come in front of us to say ‘Why are you cycling?', but they say bad words to our father," she said. His team have, however, competed and won regionally against Bangladesh and Pakistan.

    "We want to go cycling because we want to be heroes one day," said 16-year-old Jella, one of the latest riders. In one of the mildest and driest winters for many years, training has gone on without stopping. And next spring, the girls will go up into the mountains. "We say that women should not sit at home, they need to come out and do sports," said Abdul Sadiq, And 18- year-old Zainab said she wished that she could just go cycling alone on the street one day. "It's my ambition, and I hope that one day girls will be allowed to go cycling on the streets, not having a coach, or anyone with them, and they will not have problems," she said.