After spending a year in Brazil on a student exchange program, her mother recalled(回忆), Marie Colvin returned home to find that her classmates had narrowed down their college choices. “Everyone else was already admitted to college,” her mother, Rosemarie Colvin, said from the family home. “So she took our car and drove up to Yale and said, 'You have to let me in .' ”

    “Impressed--she was a National Merit (全国英才) finalist who had picked up Portuguese in Brazil. Yale did, admitting her to the class of 1978, where she started writing for the Yale Daily News and decided to be a journalist,” her mother said.

    On Wednesday, Marie Colvin, 56, an experienced journalist for The Sunday Times of London, was killed as Syrian forces shelled(炮击) the city of Homs. She was working in a temporary media center that was destroyed in the attack.

    “She was supposed to leave Syria on Wednesday”, Mrs. Colvin said. “Her editor told me he called her yesterday and said it was getting too dangerous and they wanted to take her out. She said she was doing a story and she wanted to finish it.”

    Mrs. Colvin said it was pointless to try to prevent her daughter from going to conflict （冲突）zones. “If you knew my daughter,” she said, “it would have been such a waste of words. She was determined, she was enthusiastic about what she did, it was her life. There was no saying 'Don't do this.' This is who she was, absolutely who she was and what she believed in: cover the story, not just have pictures of it, but bring it to life in the deepest way you could.” “So it was not a surprise when she took an interest in journalism,” her mother said.

    A machine that takes sweat-laden (浸满汗水的) clothes and turns the sweat into drinking water is in use in Sweden. The machine makes the clothes turn round quickly, heats them to remove the sweat, and then passes the steam through a kind of special material to make purified water.

    Since it has been brought into use, its creators say more than 1000 people have drunk others' “sweat” in Gothenburg. They add the liquid is cleaner than local tap water.

    The device was built for the United Nations' child-focused charity UNICEF to promote a campaign highlighting the fact that 780 million people in the world lack access to clean water.

    The machine was designed and built by the engineer Andreas Hammar, known locally for his appearances on TV tech show “Mekatronik”. He said the key part of the sweat machine was a new water purification part developed by a company named HVR.

    “It uses a technique called membrane distillation (膜蒸馏),” he told the BBC. “We use a special kind of material that only lets steam through but keeps bacteria, salts, clothing fibers and other things out. They have something similar to the International Space Station, but our machine is cheaper to build. The amount of water it produces depends on how sweaty the person is, but one person's T-shirt typically produces 10ml, about a mouthful.”

    The device has been put on show at the Gothia Cup-the world's largest international youth football tournament. Mattias Ronge, chief executive of Stockholm-based advertising agency Deportivo, said the machine had helped raise awareness for UNICEF, but in reality had its limitations.

    “People haven't produced as much sweat as we hoped – right now the weather in Gothenburg is lousy,” Mattias Ronge said. “So we've equipped the machine with exercise bikes and volunteers are cycling like crazy. Even so, the demand for sweat is greater than the supply. And the machine will never be produced in large numbers, since there are better solutions out there such as water purifying pills.”

Cara Jumper loves the giant saltwater pond on her grandparents Swansea, South Carolina, property(房产). One January afternoon, her grandfather Coy Jumper piled ten-year-old Cara and her sister, Claire, six, and Emma, five, into his Pontiac Sunfire and took them down to the pond. He and the girls walked happily through the pines, checking traps. No luck—they were empty.

    As the sun disappeared gradually toward the horizon, the group turned back to head home. But as Coy walked along the bank, he was suddenly unable to put one foot in front of the other. Then Cara saw Coy walk unsteadily and fall backward into the pond's deep water.

    When her grandfather didn't surface immediately, Cara jumped in. With one hand, Cara grabbed the bank. With the other, she reached for her grandfather, making contact in the dark water.

    Coy had suffered a stroke(中风) the year before. Now Cara wondered if he'd had one again. Just 80 pounds to her grandfather's 230, she held his head and pulled his face out of the water. That woke him, but he was still dead weight. She managed to move Coy towards the three-foot bank and pulled him up onto solid ground.

    The winter sun had almost disappeared, and they were all trembling. Cara knew she'd have to get Coy to the car, a quarter mile away. She helped him to his feet. Coy slowly moved forward.

    Sixty feet from the car, Coy fell. From there, he crawled, dragging himself under a gate, to the car. His granddaughters helped him into the passenger's side, and Cara got into the driver's seat.

"I used to sit on my dad's lap and drive," she says now. Coy, too, she says, had let the fifth grader drive through the fields around the house. Still, she felt nervous, but she pushed on the gas and steered(驾驶) them the three miles home. "I was trying to get there fast, but I didn't want to get us hurt," Cara says. When she pulled the Sunfire into the garage, her grandmother, Esca was there to meet them.

Coy spent six days in the hospital recovering from a stroke. Says Esca, "If Cara hadn't helped, she might not have a grandpa anymore."

    Walk down any British shopping street and you will find shops with strange names. Why is the opticians (眼镜店) called "Eyediology"? And who decided to name the butchers (肉铺) "Meat you there" ? What's going on?

    Puns are jokes based on words that sound the same. You've probably noticed that many words in English which are spelt in different ways and have different meanings are pronounced in the same way. Think about the name of the restaurant: "plaice" is a kind of fish so our restaurant is "the place" to eat fish. Butchers sell meat – so we'll "meet you there" – and opticians look after our eyes in a scientific way – so eyed – iology (ideology) is a name that fits. Hairdressers shear (cut) your locks (hair) and comb it – say the three words together quickly and you have the name of a famous detective. In shop titles and adverts, puns are used to get our attention.

    Puns are very old. The ancient Egyptians and Romans liked to pun. Shakespeare uses many puns in his plays – King Richard the Third (the son of York) brings "glorious summer" – just think about a word that has the same sound as son.

    Many people enjoy a good pun (pun / fun for all the family!) – others hate them. Puns aren't really designed to make you laugh. Here are some puns that might leave you asking for no more puns please. Have you heard about the bears who voted in the North Poll? Or the cheetah (印度豹) who couldn't be trusted at cards? Or how about the clever little Australian animal that had lots of koalaifications or the camel (骆驼) with no humps (驼峰) that was called Humphrey (and so was free of humps...)

    Puns can be funny but they sometimes make important points. Here's a fashion tip: "skinny genes make skinny jeans": so don't worry if your jeans don't fit. Look at your parents!

    About one million adults in the USA need someone to help them eat. Researchers at the University of Washington are working on a robotic system that can help make it easier. After identifying different food on a plate, the robot can decide how to use a fork to pick up and deliver the desired bite to a person s mouth.

    "Being dependent on a caregiver to feed every bite every day takes away a person's sense of independence," said the researcher. "Our goal with this project is to give people a bit more control over their lives the idea was to develop a feeding system that would be attached to wheelchairs and feed people whatever they wanted to eat.

    "When we started the project, we realized there are so many ways that people can eat a piece of food depending on its size, shape or consistency(坚实度)," said the researcher, "So we set up an experiment to see how humans eat common foods. "

    The researchers arranged plates with about a dozen different kinds of food, ranging in consistency from hard carrots to soft bananas. Then the team gave volunteers a fork and asked them to pick up different pieces of food and feed them to a model. The fork contained a sensor to measure how much force people used when they picked up food.

    To design a feeding strategy that changes based on the food item, the researchers combined two different algorithms (算法). First they used an object-detection algorithm called Retina Net, which scans the plate, identifies the types of food on it and places a frame around each item. Then they developed SPNet, an algorithm that examines the type of food in a specific frame and tells the robot the best way to pick up the food.

    The team is currently working with the Taskar Center for Accessible Technology to get advice from caregivers and patients on how to improve the system to meet people's need.

    One day after school, Bill walked past the shop on the street corner as usual. He stopped to look at the front row of shoes, and he felt sorry for himself.

    He really wanted to have a new pair for his birthday. He sadly walked away and

    thought of how to tell his mother. He knew she would give him anything if she could. But he also knew she had little money. He decided not to go home at once, because he looked worried and he didn't want his mother to worry about him. So he went to the park and sat on the grass. Then he saw a girl in a wheelchair. He found that the girl moved the wheels with her hands. Bill looked at her carefully and was surprised to see that the girl had no feet.

    He looked down at his own feet. "It was much better to be without shoes than without feet," he thought. It was not right for him to feel so sorry and sad. He went away and smiled, thinking he was luckier in life.