We all need a healthy environment, but we produce waste every day and it is harmful to our environment. Though we are young, we can still do something to help. In fact, even the simplest everyday activities can make a real difference to the environment. Here are some ideas for you to live a green life.

    Remember these three words; reduce, reuse and recycle.

    Reduce means" use less". Don't waste things. This saves money and reduces pollution and waste going into the environment. Before we buy something new, think if it is really necessary or maybe the old one will be just as good! When we do buy thing, choose local products if possible, and try not to buy too many things from abroad.

    Reuse mean" use again". Use things for as long as possible. When we buy things, make sure that they last a long time. We should take care of them so that they will last, and we should repair them if we can instead of throwing them away and buying new ones. Don't use a paper cup or a paper bag. It's better to use a china cup(瓷杯) and a lunch box because you can use them again.

    Recycle means" change things into something else". Although it takes energy to change something into something else, it's better than throwing things away or burning them. Find out what can be recycled in your neighbourhood and take part in recycling programmes. We should also buy products made from recycled materials, such as recycled paper, to help save trees.

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    Every year on 15th October, over 200 million people around the world take part in Global Handwashing Day. But why do we have a day for something we do all the time? Well, research shows that not enough people often wash their hands with soap. Experts believe that this leads to the deaths of millions of people every year.

    Sidibe, a public health expert says soap is the most beautiful invention in public health. Washing your hands with soap can have a huge impact on reducing (减少) the spread of diseases. Handwashing with soap prevents babies from getting ill and keeps children healthy in school.

    However, washing hands with soap does not happen as often as you might think. This is partly because there aren't enough resources (资源) in poorer countries, but it's also because for many people, handwashing is simply not part of their everyday life. It's not easy to get people to change habits they learned in early childhood -- but this is what Global Handwashing Day wants to do.

    In 2008, the Indian cricket team joined around 100 million Indian schoolchildren in washing their hands to promote (促进) the first ever Global Handwashing Day. Every year since then, many different events have been held around the world. In 2014, Global Handwashing Day was used in the fight against Ebola, a very serious disease, with events held in affected (受感染的) African countries.

    Today, local and national leaders continue to use the day to spread the message about the importance of clean hands. The hope is that handwashing becomes a necessary part of people's lives and improves the health of millions around the world.

My Favorite Animal

How much do you know about apples? You may think that apples are 1 . But they can float(漂浮) in the 2 ! This is because 25 percent of an apple is air. This makes them less dense(密度小的) than water, 3 they can float. A little—known 4 is that apples make people burp(打嗝). When we eat apples, all the air gets into our bodies. It gets 5 through burping. 

Asking ChatGPT 4, an AI chatbot, to write a 100-word email might take just a few seconds. But have you ever wondered about the environmental influence of this technology? The rapid growth of AI is raising concerns. Many people realize that the tool comes with hidden costs, especially the large amount of energy used by digital services.

One of the main problems is the"water footprint", the total water the AI chatbot uses in its lifetime.AI depends on data(数据) centers, which house servers that store and manage data. Once turned on, the servers produce heat. To cool them down, engineers use pipes to bring in cold water from cooling towers to take away the heat.

Data centers operate around the clock, making them very"thirsty". According to The Washington Post, ChatGPT 4 needs about 519 milliliters of water, or a little more than a bottle for every 100-word email. Each year in the US, ChatGPT 4 uses over 435 million liters of water just for emails - enough to support a regular US family for 1,050 years.

Meanwhile, data centers are"hungry" for electricity. Writing a 100-word email requires 0.14 kilowatt-hours of electricity, which can power 14 light bulbs for one hour. Yearly, ChatGPT 4 uses up over 120,000 megawatt-hours(兆瓦时) of power just to help write emails. This is enough to support all homes in Washington DC for 20 days.

Now, businesses are looking for different ways to make AI more environmentally friendly. Microsoft uses cold metal plates with cold water to cool machines. Clean energy is also helpful; for example, Tencent's data center is powered by solar energy. Another company, Google, uses developed cooling systems that rely on outside air to cut down cooling needs.

 There are millions of teenagers using social media every day. Although some people think social media is a positive thing, many are worried about the negative influences it can have on young people.

 Many teenagers agree that social media helps them stay connected to their friends and make new friends from around the world. More and more teenagers are willing to share their life and thoughts online. Thanks to advances in technology, how teenagers make friends and communicate with each other has changed greatly.

 However, social media also has many disadvantages. One of them is that some parents believe social media makes it harder for families to spend time together. They say that things on the Net seem super appealing, and that their kids can't take their eyes off the screen. As a result, teenagers pay no attention to the rest of their family.

 Another serious problem is that social media makes bullies(霸凌者) easier to reach their goals. A great many people have experienced cyberbullying - - bullying that takes place online. So how can teenagers protect themselves if the cyberbullying has taken place? Gwen Taylor, an expert from a charity, which works to end online bullying suggests, "The first thing to do is to tell a trusted adult about what is going on. " "If someone posts content that frightens you, you can report it to the social media platform. You'd better keep the screenshot(屏幕截图) of the behavior because this will help you to report it and help others to help you, "says Taylor.

 Perhaps the more effective way is to try to be a good digital citizen. How you act online is just as important as how others treat you. Good digital citizens use online spaces positively, which means treating everybody online with kindness and respect. Respect other people's feelings and don't be mean (刻薄的) . "If you have shared something you shouldn't have, it's never too late to say sorry and fix the situation, such as taking the post down. If you notice somebody is being cyberbullied, consider reporting it and getting in touch with the person being treated badly to make sure he is OK, "Taylor advises.