We have always been interested in the moon. 2000 years ago people already knew it moved around the earth and where it would be in the sky at different times of the year. At that time, everything about the moon was learned by watching it carefully in the sky.

    When scientists could use telescopes to study the moon more closely, their ideas began to change. They could see the moon was made of rocks. Most scientists thought moon rocks would be different from those on Earth. This was because they believed the moon had once been a planet that had been caught in the earth's gravity (引力) millions of years earlier.

    In 1969 moon rocks were finally brought to the earth and studied. Much to their surprise, scientists found that, except for water, the moon and the earth were made of the same things. Once again new ideas were needed for this new information.

    After years of study, most scientists now think that the moon was once part of Earth. They believe very early in its history, maybe 4 million years ago, something about the size of Mars hit Earth. This sent billions of rocks into space around our planet. These rocks slowly joined together and after many years became the moon.

    However, in the future, even though our ideas about the moon may change again, we will still be interested in it.

    People have always wanted to know what our future will look like. Go on reading this text, and you will know what will happen in the next fifty years.

    How can we know what the future will look like? To be able to understand the future, you have to know the past, what has taken us to where we are today and what has changed along the way? The world has changed a lot in the last 150 years, but people are driven by the same basic needs as they were 150 years ago. Will this change in the next 150 years? No.

    What inventions have really made a different in the last 150 years? In the past years, the inventions that have changed most people's everyday life are telephone, radio, television, computer, the car and the internet. Then we of course have a lot of inventions that have made life easier, like new medicine, faster cars, trains, etc. In general, people have been working hard in the last 150 years to make inventions that will make the world a better place. Since there is still much to do in the area, this will be important for at least the next 150 years.

    Why do we need to guess the future? Guessing the future is important for two reasons: First, we need to start to think about what kind of future we would like for ourselves and our children. And then we need to know what decisions we need to make today that will give us the best future.

    Apple has created a new robot named Daisy that can break a dead iPhone into pieces and find out valuable materials such as silver and tungsten (钨) in order to protect the environment.

    The robot can break up a dead phone in just 18 seconds and is a new type for Liam, another recycling robot Apple announced in 2016. Liam had 29 arms and could break iPhone into pieces within just 11 seconds.

    Daisy is able to break up 9 kinds of the iPhone, grouping them into usable parts. And it can find out valuable materials that traditional robots can't do.

    Without being stopped. Daisy is likely to do with over 1 million phones per year, a small part of the more than 2017 million phones Apple sold in 2017. The machine is programmed to carefully break up the many pieces of returned iPhones, including SIM card plates, batteries and cameras.

    It does this by taking away different parts of the iPhone bit by bit so they are all easier to recycle, separating out the valuable silver, tungsten and other parts. Computers made by other companies seem to be easier to break up. However. Apple does not make it public how many of its dead phones are recycled every year.

    The best way to teach your children to live a green lifestyle is to live that green lifestyle yourself. When kids see you picking up rubbish from the park, they see value(价值)in keeping public places clean Use these tips to introduce your children to green living：

    Use public transport. Use the car only when necessary; at other times, take trains and buses with your children.

    Ask for their help. Younger children often love grown-up activities. So have them carry a small bag of food waste to the bin, or let them help separate(分开)your recycling. Older children may want to take part in the activities like cleaning up the neighbourhood and organizing the daily recycling If they're not very interested, make environment-friendly activities a family-time priority (优先事项)

    _________________________ Petting farms for younger kids may help prevent(防止)farm animals from becoming something that they see only in books or on television. Many people believe that wild animals shouldn't be kept in any kind of zoos, but they do offer a valuable educational and conservation(保护)lesson. So if you want to visit a zoo, find a zoo that provides its animals with as natural an environment as possible