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.
巴尔·德尔做了一个关于“死亡”的梦，这个梦让弗丽嘉惊恐万分，因为如果这个梦变成现实的话地球上的一切生命将会停止。
Balder had a dream that he died, which disturbed Frigga since all life on Earth would cease if this dream were to come true.
从哈佛毕业以后，他对美洲和太平洋地区蚂蚁世界的研究越来越深入，这个神奇的新世界间接的为他打开了一幅宏大的画卷：关于地球生命的终极谜题。
He ends up at Harvard and his increasing expertise in the ant world of the Americas and the Pacific somehow enables him to begin to see the big picture: the puzzle of life on Earth.
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