探索频道关于地球工程学的节目是自费制作的。
It was paid for by the Discovery Channel for their show on geoengineering.
要回答这个问题，必须首先要了解关于地球自身的某些事物。
To answer that question we must first understand some things about the earth itself.
利用这些分类标本，我们可以提出无数关于地球生命的关键问题。
There's an overwhelming number of questions we can ask about life on Earth using these archived specimens.
应用推荐