With the development of technology, WiFi is becoming more and more popular and important in people's daily life. But have you ever experienced it? Just imagine what life will be like if there is no Internet. Maybe you won't be able to talk with friends, play video games or search for information for your homework on the Internet.

    But in fact, only one third of the world's population are able to get information on the Internet. The rest are too poor to buy WiFi access(使用权) or they live in remote areas. As a result, they live without the Internet.

    Google and Facebook, two world-famous technology companies, have decided to do something about it. Google's Project Loon will try to send balloons which are 15 meters wide into our Earth's stratosphere (平流层) in 2015. The balloons are made of a special material that is three times thicker than the plastic bag we use every day. Each balloon will carry a minicomputer and a WiFi radio. The WiFi radio will send the Internet over the areas it is floating over. Then people can get up-to-date information on weather or news.

    Zhalong is a nature park in Heilongjiang in Northeast China. It is one of the world's most important wetlands. The area provides food and homes for wildlife. It is an ideal home for different kinds of plants, fishes and birds.

    Many birds live comfortably in Zhalong Nature Park all year round, while some only stay for a short time. There are many fish in the wetlands, and the birds can easily catch them for food. Zhalong Nature Park is an important living area for the rare red-crowned cranes. There are not many red-crowned cranes in the world. Some of them live in Zhalong.

    Some people want to change the wetlands to make more space for farms and buildings. This means that there will be less and less space for wildlife.

    More and more birds are in danger because they do not have enough living space. Many of them died. The Chinese government wants to protect these endangered birds, and they can be safe in Zhalong.

    Every year a lot of tourists go to Zhalong to watch birds. This year members of our Bird Watching Club are going to study the different kinds of birds in Zhalong and the changes in their numbers. The study will begin next month.

    We do a bird count once a year. We are now inviting the second school students to help. We need more people to help us count and do something to help the birds. Many people do not understand the importance of the wetlands. We hope this information will help them understand it and make them actively take action to protect wildlife.

    3D printing is becoming more and more popular. We are now able to print things such as clothing, prosthetic limbs (假肢), musical instruments(乐器) and so on. People and businesses are able to create the things they need very quickly and easily using 3D printers.

    But can you imagine printing food? Some scientists are trying to revolutionize our eating experience by doing this. They hope that having a 3D printer in the kitchen will become as usual as the microwave or blender. Scientists say that they are easy to use: you simply have to choose a recipe and put the food "inks" into the printer. You can also change the instructions to make the food exactly how you want it. This means that it would be very quick and easy to create delicious meals.

    Using 3D printers to create your meals would also be saving the environment. There would be less need for traditional growing, transporting(运输) and packaging as food production would be quicker and easier.

    Printing food could also help people who suffer from dysphasia (吞咽障碍症). They could program (为…编程) the printer to print softer versions of their favorite foods so that they would not have trouble eating them.

    However, some people think that the future of 3D-printed food would be a disaster. It could take away many jobs, including those for growing, transporting and packaging food. Imagine a world where there was no need for farming or growing crops and the same tastes could be printed from a raw "food ink". Similarly, traditional cafes and restaurants might lose business. Also, there are worries about the printed food: is it really possible to get the nutrients (营养物) we need from food-based inks and gels?

    What's more, cooking and eating together with family and friends has long been a traditional and enjoyable activity. It is hard to imagine a world where the fun of cooking is dead and meals can be done at the touch of a button.                                                        

    We want to explore and try to better understand the world in which we live; Space exploration is one of the ways. Through the exploration of space, we can begin to unravel the mysteries of our universe, and to better know our living environment.

    Space exploration provides us with knowledge about the beginning of our solar system, our own planet and ourselves. It also helps answer the questions that have puzzled us for many years. Solar system exploration is important because it is good for us.

    Space technology has become an important part of our daily lives. Some technology uses satellites to communicate. Satellites are also used to examine the changes in the Earth's climate and seas, for weather report and for military. We also use satellites in food production. Because of the use of space technology in crops, fewer and fewer people will suffer hunger.

    The space program provides a chance for nations to work together. The cooperation(合作) promotes peace and understanding between governments and their people. Many governments have taken part in the space technology, including the United States, Russia, Japan, the European nations and India. In the near future, other nations will take part in it. In fact, the United States remains the leader in new space technology.

    People worldwide are doing something to protect the earth. As kids，we can also try our best to help. We can do the following.

    ●Change a light. Change a regular light to a more energy-efficient(节能的)light.

    ●Drive less. Walk, ride or use public transportation. Ask your parents to drive less. By this way, we can make less pollution.

    ●Recycle more. Think before you throw away trash. Throw trash into different trash cans, and this helps recycle.

    ●Use less hot water. It takes a lot of energy to heat water like a bath instead of a shower, and wash clothes in cold or warm water.

    ●Adjust(调节)your air-conditioning. Move it down 2℃ in winter and up 2℃ in summer than you want it to be. This helps save electricity.

    ●Plant a tree. Any tree can take away one ton of CO₂ through its lifetime.

    ●Turn off the electricity. Remember to turn off your TV, and cell phone charger(充电器)when not in use.

    This will help save electricity and reduce CO₂.

    Mobile phones are very popular with people. They are becoming smaller and more convenient.

    Now the scientists in Canada made a smart phone (智能手机)from electronic paper. The Paper Phone is flexible. People can control it by bending it or writing on it with a pen.

    Though the Paper Phone is only millimeters (毫米)thick, people can do many things with it. For example, people can use it to make phone calls, read books, watch movies and play music. So many people use it as a computer.

    The scientists think there will be no paper in the office. And people can store what they want in the Paper Phone.

    The scientists from Queen's University in Kingston, Canada said the Paper Phone would be in style in the future. It may be the end of paper and printers.

    To make people be interested in this kind of mobile phones, the scientists will make it more beautiful. People will see the Paper Phone on May 10 this year.