When was the last time you did something really fun with one of your parents—just the two of you?

    Parents who take their young children to music，swimming and art classes often stop arranging such activities once their kids are older and in school all day.But it doesn't have to be that way.Doing something enjoyable with your kids just might make you look at each other in a whole new way，especially if you do it through a class or an event.When parent and child become students together，it puts them on the same level，at least for a while.

“I really like parents to come to class with their kids—they start sharing things and talking about what they're doing and what they like，” said art teacher Pyper Dixon.

    However，finding something new in common is a big  choice for them，especially when kids get involved in sports and other after­school activities.But it's possible to learn a new skill or hobby together.

    That's certainly true of Lauren,11，from Silver Spring，who is in Dixon's class with her father，Dennis.“I was just going to drop her off，” Dennis said，“but Dixon persuaded me to stay.”

    Now Lauren gets to nag her father about doing his art homework.“He always leaves it to the last minute，” she said.“But then he'll turn around to do amazing drawings，”  she added.“We have different styles of drawing，so it's interesting  to talk it over with him.”

    Without the Saturday morning art class，Dennis said，he  would be reading the paper，and Lauren would be on her own in her room or on the computer.But they talk more now.“I can't think of an experience where you communicate with your kid so closely，” he said.

    Have you ever found yourself in his situation: You hear a song you used to sing when you were a child-a bit of nostalgia(怀旧) or “blast from the past,” as we say. But it is not a distant childhood memory. The words come back to you as clearly as when you sang them all those years ago.

    Researchers at the University of Edinburgh studied the relationship between music and remembering a foreign language. They found that remembering words in a song was the best way to remember even one of the most difficult languages.

    Here is what they did. Researchers took 60 adults and randomly divided them into three groups of 20. Then they gave the groups three different types of “listen-and-repeat” learning conditions. Researchers had one group simply speak the words. They had the second group speak the words to a rhythm, or beat. And they asked the third group to sing the words.

    All three groups studied words from the Hungarian language for 15 minutes. Then they took part in a series of language tests to see what they remembered.

    Why Hungarian, you ask? Researchers said they chose Hungarian because not many people know the language. It does not share any roots with Germanic or Romance languages, such as Italian or Spanish. After the tests were over, the singers came out on top. The people who learned these new Hungarian words by singing them showed a higher overall performance. They did the best in four out of five of the tests. They also performed two times better than those who simply learned the words by speaking them.

    Dr. Katie Overy says singing could lead to new ways to learn a foreign language. The brain likes to remember things when they are contained in a catchy 3, or memorable 4, tune 5.

    Dr. Ludke said the findings could help those who struggle to learn foreign languages. On the University of Edinburgh's website Dr. Ludke writes, “This study provides the first experimental evidence that a listen-and-repeat singing method can support foreign language learning, and opens the door for future research in this area.”

    Standing in the shower waiting for the water to het up could be a thing of the past, along with all the wasted water. Three and a half years ago, Lindy Honeychurch, a thirty-year-old Australian full-time mum living on a farm outside Launceston, didn't consider herself a very good water saver. Neither did her partner who often complained about it with good reasons. Their farm had to rely on tank water and solar power, which meant water had to be trucked in if he tank water ran out in summer.

    “I looked at where I could save because I could lead an easier life without the complaint,” she said. Modeling her idea on a car thermostat(恒温器), Lindy used her kids' magnetic(磁的)drawing board to design a device that diverts the cold water back down the hot water pipe. “The first aim when I started designing was to keep it really small and simple without having to use power. I wanted to keep it as something that everyone could use,” said Lindy.

    She got a patent for her design and took it to some engineers to have it tested out. At first, even though the engineers were amazed that she wasn't an engineer, she said she sometimes found it hard to be taken seriously. “My age was a real factor because in the plumbing(管路系统)and manufacturing industries you're dealing with people who've got a lot of experiences,” she said. But the engineers soon saw the potential of her design, which she estimated would save average families between 14,000 to 22,000 liters per year.” when you transfer that to the dollar savings on tank water that you have to buy, it can be a saving of $600 per year,” said Lindy.

    Armed with positive feedback from engineers and people using rainwater tanks, her design proved a great success. Soon she found a manufacturer early this year, and completed a state government commercial ready course to help her research, her markets and distribution channels. With an Australian Standard for her device just approved, she's about to start manufacturing and wishes to see her products on the shelves within the next few months. Once that happens, Lindy plans to return to being a full-time mum.

B

    Atlantic puffins（角嘴海雀）are specially used to living on the open sea. Their feathers allow them to stay warm as they float at the ocean's surface or swim underwater. Diving as deep as 60m, they swim by flapping their wings as if flying through the water. There, they hunt herring, capelin, and sand eels.

    Atlantic puffins are also excellent fliers. Flapping their wings at up to 400 beats per minute, puffins can reach speeds of 88km/h.

    April to mid-August is the breeding season for puffins. When a puffin is around three to five years old, it will choose a partner at sea to mate with for life. It is thought that the birds' colourful bills and feet, which fade in the winter and brighten in the spring, help puffins find their potential（可能的）mates.

    Puffins create shelter（庇护所）, about 90cm, in rocky cliffs either in the soil or between rocks. Often, couples will return to the same shelter year after year. At the back of the shelter, they build a nest lined with grasses, seaweed, and feathers. After the female lays a single egg, both parents take turns incubating（孵化）the egg for about 40 days.

    Once the chick hatches, the mother and father will take turns bringing it fish to eat several times a day. Atlantic puffins have the ability to carry several fish in their beaks at one time. The ridges（脊）at the top of their bill hold the fish in place, which allows puffins to keep their mouth open to catch more fish without losing any. In general, they can hold around ten fish in their beak at one time.

    In the wild, puffins can live around 20 years. Their main predator is the great black-backed gull, which can capture a puffin mid-flight or attack a puffin on the ground. Gulls are also a threat because they steal puffins' fish (sometimes right from their mouths), and they pull puffin chicks or eggs from their nests.

    In recent years, terms like "going green" and "eco-friendly" have become buzz words on talk shows, commercials and product packaging. The term "eco-friendly" has been used for so many different products and practices.

    Eco-friendly Car Race

    Can you imagine a car racer is so eco-friendly that its tyres are made from potatoes, its body is created from hemp (大麻) and rapeseed oil and it runs on fuel made from wheat and sugar beet (甜菜)? The one-seater racing car called Eco One is built by experts from Warwick University, who hope that Eco One will be adopted by the automotive industry. It is sold at $ 51,000.

    Pollution-sensitive Dress

    Don't be caught outside unaware of pollution levels in the air. The pollution-sensitive EPA Dress by Stephanie Sandstrom notices pollution in the air accordingly. This dress ­ which is actually quite pretty ­ looks like you pull it from the bottom of the dirty laundry pile when the air is dirty. It might protect your health by advising you to stay indoors for the day, but it won't do you any favor if you're meeting with clients.

    Eco-friendly Umbrella

    Traditional umbrellas come with a fixed surface. Although it is changeable, you cannot replace it easily. This eco-friendly design is more flexible. It is actually only an umbrella skeleton(骨架)without any surface, which can be folded, so you can put anything such as newspapers, plastic bags or whatever you want to serve as the protecting surface.

    Eco-friendly Moss (苔藓) Carpet

    It is said that walking on fresh grass increases your blood circulation. The Moss Carpet, created by Nguyen La Chanh, looks at getting the grass to your feet. The mat includes ball moss, island moss and forest moss. The humidity (湿度) of the bathroom ensures that it grows well. And that's why you need to place it there and not anywhere else.

    Fish have different personalities which change as they experience life's highs and lows, according to British biologists.

    Researchers identified different "personalities" in their fish by observing the boldness(大胆) or shyness of individuals, according to The Nature. Like people, some fish are very confident in the face of novelty or conflict, while others are silent and fearful.

    The scientists selected particularly bold and shy rainbow trout(虹鳟鱼), and tested whether they changed their outlook depending on what life threw at them. They arranged some fish to fight and others to watch to see how both the participants and observers responded to victories and defeats. Winning or losing a fight, or even watching fellow fish overcome the difficulties influenced the future behavior of the creatures studied in the lab.

    The researchers made fish compete with much larger or smaller opponents(对手), to ensure that they would win or lose their fights. These bold fish that won their fights tended to be even bolder when later presented with a novel food item; losing their fight caused them to be much more cautious.

    Fish also learn by watching others. Bold fish watching a shy fish exploring a mystery object were much more nervous when later given a novel item for themselves.

    Predictably, shy fish that won a fight also gained more confidence, but surprisingly, shy fish that lost their fights also grew bolder when exploring strange new food, Sneddon said, adding that this could be due to what she calls a "desperado effect"(亡命徒效应).

    The new research suggests that animals can gradually adapt(使适应) their personalities. The results agree with the effects that life experience can have on humans.