You    something to improve your memory.

That little boy disappeared  .

    Have you ever thought about what our food will be like in the future? As the population is growing fast, there must be changes in our food.

    More land will be used for building houses for people. Then there will be less space for cattle and chickens, so meat will be more expensive. Instead, people will eat more fruit and vegetables.

    Scientists are always trying out new ways of growing food. Only one third of the Earth's area is land and the rest is sea, so some think maybe we can get more food from the sea.

    Besides, though rice supports more than half of the world's population, it needs a lot of water to grow. Scientists predict(预测) the climate will get drier during the next century. Therefore, it might be impossible to grow rice in the future. Some farmers are experimenting with new crops. Farmers like to grow beans because they don't need much water, and beans also improve the quality of the soil. The soybean (黄豆) makes a good substitute(替代品) for rice and meat.

— Don't worry. You can          them by email.

    Life in the future will be different from life today. Between then and now many changes will happen. But what will the changes be?

    The population is growing fast. There will be many people in the world and most of them will live longer than people live now.

    Computers will be much smaller and more useful, and there will be at least one in every room. And computer studies will be one of the most important subjects in schools then. People will work fewer hours than they do now and they will have more free time for sports, watching TV and travels. Travelling will be much cheaper and easier. And many more people will go to other countries for holidays.

    There will be changes in our food too. More land will be used for building new towns and houses for all the people. Then there will be less room for cows and sheep, so meat will be more expensive. Maybe no one will eat it every day. Instead they will eat more fruit and vegetables. Maybe people will be healthier. Work in the future will be different too. Robots will do dangerous and hard work. Because of this, many people will not have enough work to do. This will be a problem.