To his friends,family and colleagues, Norman Borlaug was a marvel, continuing to work on agricultural projects and academic pursuits as he reached the age of 95.

VOA: standard.2009.09.13

You'll be introduced here to studies, to research, to rigorous academic work.

我将向你们介绍相关知识，调查研究，严谨的学术作品。

哈佛公开课 - 幸福课课程节选