Học tiếng Anh hiệu quả, nhanh chóng: http://www.facebook.com/HocTiengAnhVOA, http://www.voatiengviet.com/section/hoc-tieng-anh/2693.html. Nếu không vào được VOA, xin hãy vào http://vn3000.com để vượt tường lửa. Các chương trình học tiếng Anh miễn phí của VOA (VOA Learning English for Vietnamese) có thể giúp bạn cải tiến kỹ năng nghe và phát âm, hiểu rõ cấu trúc ngữ pháp, và sử dụng Anh ngữ một cách chính xác. Xem thêm: http://www.facebook.com/VOATiengViet
Luyện nghe nói và học từ vựng tiếng Anh qua video. Xem các bài học kế tiếp: https://www.youtube.com/playlist?list=PLD7C5CB40C5FF0531
Science: Luyện nghe nói tiếng Anh qua video: Chương trình học tiếng Anh của VOA: Special English Science Report. Xin hãy vào http://www.voatiengviet.com/section/hoc-tieng-anh/2693.html để xem các bài kế tiếp.
A shopping center in Brazil is growing vegetables on its rooftop using waste collected from the mall’s restaurants. The garden is on the roof of the Eldorado shopping center in Sao Paulo. Workers there use trash from the restaurants to create compost for the garden. Compost is a decayed mixture of plants or vegetables that is used to improve the soil in a garden. A spokesman for the mall says that the waste from 10,000 meals served each day in its food court goes into the compost. Workers grow different kinds of fruits and vegetables on the rooftop garden, including tomatoes, lettuce and eggplant. The fruits and vegetables grown there provide free food for the employees. Mall officials also hope to reduce the amount of waste that would end up in a garbage dump. Cicero Evangelista leads the waste recycling effort. He says about 400 kilograms of organic waste are created every day from the mall’s food court. That is an area where many small restaurants share a large dining area for the mall customers. Mr. Evangelista says workers weigh the material and add enzymes to eliminate bacteria, reduce humidity, and speed up decomposition. It is how they turn organic waste into organic compost. Officials at the shopping center held workshops for employees to learn how to best collect waste from their stores. Mall employees say the project reuses waste food to make food and reduces the shopping center’s carbon footprint at the same time.
