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   Some countries are building a great wall of tree across Africa. It is called the Great Green Wall. They want to bring life to the dry lands and help to fight the bad environment.

The wall is 8, 000 kilometers long and 15 kilometers wide. It covers from Senegal in the west to Djibouti in the east, on the south of the Sahara Desert. So far, Senegal has made the best progress by planting about 11,000,000 trees.

Many years ago, there were few trees in that area and the winds used to be very strong. It was bad to the fields. Also, there was little rain, so few plants could grow and many people were hungry. Since the tree planting project started, the trees have provided food for the local people, the air has become better. Little by little, there were green fields for people to grow plants.

The project began in 2007. It is supposed to cost 8, 000, 000, 000 dollars. Many countries are trying their best to help to plant more trees. So we will be able to see the whole green wall across Africa in the near future!