Kataria is the founder of the worldwide laughter movement. The celebration of World Laughter Day is a positive activity for world peace and is to build up a global sense of brotherhood and friendship through laughter. The first “World Laughter Day” gathering（集会）took place in Mumbai, India, on 11th January 1998. 12, 000 members from India and international Laughter Clubs attended it. Now there are about 5, 000 Laughter Clubs worldwide on all 5 continents.

    “HAPPY-DEMIC” was the first World Laughter Day gathering outside India. It took place on 9th January 2000 in Copenhagen, Denmark. “World Laughter Day” is now organized on the first Sunday of May every year. Hundreds of people gather worldwide on that day to laugh together.

    Today, the world has never faced so much unrest（动荡）before. People are at war within themselves. Laughter is a universal language, which has the ability to unite humanity without religion（宗教）. Laughter can build a common connection between various religions and create a new world order. So we believe that laughter and only laughter can unite the world, building up a global sense of brotherhood and friendship.

    Studies also say that laughter helps your body do the following: lower blood pressure; reduce stress; work out the heart, especially for those who are unable to perform physical exercise. So in life, when you can laugh, you should laugh loudly and with your entire body—because it's good for you.

    For many young people, Halloween is the best day of the year.

    Halloween comes on October 31^st. When it comes, all the family members always get together to make a pumpkin lantern. They usually cut scary(恐怖的) or funny faces into pumpkins. Then they put candles inside to make the pumpkins into lanterns.

    Children dress up in costumes. They walk around their neighborhoods to collect candies. They knock on their neighbors' doors. When a person opens the door, the children shout, "Trick or treat!" If the person gives them candies, they go away. If they can't get the candy, they always play tricks on the person.

    Many people have Halloween parties. They like to watch scary movies and tell ghost stories.

    Is it good to be in a middle school? Most American children think so. In America, middle schools often have sixth, seventh, and eighth grades. It is different in different places.

    For children, going to a middle school is a big change. Most middle schools in America have a special day for new middle school students. On that day, they are showed around the school by their new teachers. And they could know a lot about the history of the school. They also would make friends with the old schoolmates (校友).

    They will grow up and learn some different and difficult things in a middle school. A new middle school student will learn foreign languages, computer, music and art, health, and other skills, such as cooking.

    A middle school will have sports teams, clubs and have activities for children. They can choose what they like and join them. If they are good at singing, playing basketball or something else, or if they want to learn, they can join them. Most American children think it's good to be in a middle school.

    Here I want to tell you some information about water.

    Water covers most of our planet. People can find it in oceans, lakes and rivers, and under the ground. Water moves in the environment by evaporation, condensation, and precipitation. The warm Sun helps water change into vapour and rise up into the sky. It is evaporation. The vapour in the air forms clouds in the sky. It is condensation. When the clouds get heavy enough, the water falls back to the ground as rain or snow. This is precipitation.

    Ocean water has too much salt in it. Much of the water travels far over the land. When it travels over the land, the water picks up salt from the rocks and soil. About 97.5% of the Earth's water is salty water. It is expensive to take salt out of the water.

    All people need clean water. They need it for drinking, for cooking, and for bathing. Some people in a village in South America did not have clean water. Their water was full of oil and dirty things. People there got sick when they drank the water. Other people heard about the problem. They sent empty water tanks (储水池) to the village. Rainwater fell into the tanks. Now the people in that village have the clean water.

    A new rubbish sorting system (垃圾分类系统) has been put into use in Fangchengyuan Community in Beijing. Local people not only sort their rubbish, but also put QR codes (二维码) on it.

    "When the rubbish is collected and the codes are seen, I will get reward points to exchange for small gifts and even some money," one of the local people told reporters. "It's really creative and encouraging."

    This smart system has been carried out in 350 communities in Beijing. The capital of China has joined a list of cities in the country that take action to support rubbish sorting. For example, Shenzhen and Shanghai have made laws to punish people and organizations for not sorting rubbish correctly.

    China produces quite a lot of rubbish every year. Much of the rubbish is buried (填埋) in soil or burned without being sorted. Landfills (填埋场) take up a lot of land and have a risk of polluting the soil and water nearby. And burning rubbish can produce harmful gases. Through rubbish sorting, we can reduce the use of landfills and air pollution.

    What's more, rubbish sorting saves resources, which could bring economic benefits (经济利益). For example, a ton of waste paper can be reused to make about 850 kg of paper, saving 17 trees and 50 percent of water. Because of the benefits, some countries have developed successful sorting systems.

    Japan has a strict and detailed system. When people throw away a water bottle, the cap, the wrapper (包装纸) and the bottle itself have to go into three different bins. Every year, families receive special rubbish sorting timetables and directions from their local governments. They are advised to follow the timetables and directions when they throw away rubbish.

    In Australia, every family is provided with three rubbish bins—the red lid (盖子) bin for "general waste" like food and plastic bags, the yellow lid bin for "recycling" like steel and glass, and the green lid bin for "green waste" such as grass and leaves. On the streets, the bins are printed with pictures of the things that are allowed inside. It makes recycling quite easy.