Scientists will put some robot fish into the sea near Spain this year. These robot fish will help people find out the pollution in the water. If the robot fish are able to finish their work successfully, the team of scientists hopes they can use the robot fish in rivers, lakes and seas around the world.

The robot fish are about 1. 5 meters long. There is a detector (探测器）in their bodies. It can find the pollution in the water, and then the robot fish will eat part of it.

They can “swim” for eight hours in the sea freely and send back information to people on the beach. After their power(电能) runs down, they will go back to the beach by themselves.

There are five robot fish altogether. Each costs about 29,000 dollars. They are part of a three-year project between the engineering company BMT Group and University of Essex in southeastern England.

How green are you? Do you care about protecting the environment and saving energy? We all need a healthy environment, but we produce waste every day and it does harm 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. Remember these three words: Reduce, reuse and recycle.

REDUCE

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 whether it is really necessary— or maybe the old one will be just as good! When we do buy things, choose local products （产品）if possible, and try not to buy too many things from abroad. It may cost a lot of money to bring them to us.

REUSE

Reuse means “use again.” Use things for as long as possible. When we buy things, make sure that they last a long time. We should look after 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 and a lunch box because you can use them again.

RECYCLE

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 neighborhood and take part in recycling programs. We should also buy products made from recycled materials, such as recycled paper, to help save trees.