一篇英语演讲稿

This is Steve Ember with the VOA Special English Agriculture Report.
This week, we take a suggestion from a listener in Brazil. Agricultural specialist Luiz Augusto Verona in Chapeco would like to hear about agroecology（农业生态学）. He says it is a subject that these days "everybody talks about."

The word agroecology is generally used to describe farming methods that can be carried out in a way that does not damage the environment. Sustainable development（可持续发展）is another term often used in connection with agroecology. Sustainable development methods are designed to save resources.

Interest in agroecology has increased in recent years. Now, many universities offer studies in this area. The University of California at Santa Cruz and Pennsylvania State University are just two of the schools that offer agroecology programs. Many agricultural programs are also linking studies in animal biology, soil science and other studies.

In many ways agr