体知:食物,能量和健康

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From the course by Yale University
宇宙之旅:对话 (Journey of the Universe: Weaving Knowledge and Action)
ratings
Yale University

宇宙之旅:对话 (Journey of the Universe: Weaving Knowledge and Action)

ratings
From the lesson
体化知识: 食物,能源和健康
理解了宇宙的自组织特性后,我们再来想一想星系。正是星系的螺旋结构才能产生恒星。椭圆星系没有这种螺旋结构,因而也失去了产生恒星的能力。水,土壤和空气年复一年地产生生命。特别是土壤,它是一种动态结构,需要三十亿年时间才能形成。我们现在就拥有土壤,只要能维持它的健康和完整,就能源源不断地产生食物。但如果我们破坏了土壤或是海洋的动态结构,就要等上数十亿年才能让它们恢复。

Meet the Instructors

  • Mary Evelyn Tucker
    Mary Evelyn Tucker
    Senior Lecturer and Senior Research Scholar
    Yale School of Forestry and Environmental Studies
  • John Grim
    John Grim
    Senior Lecturer and Senior Research Scholar
    Yale School of Forestry and Environmental Studies