They could help scientists understand not just when higher life forms evolved, but why.

它们将不仅仅帮助科学家理解高等生物何时出现，还有为何出现的问题。

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Suppose the evolution of higher life forms takes another couple billion years, as it did here.

再假设更高级形式的生命要再花几十亿年才能进化，就如地球上所经历的那样。

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Those who make the choice to work with these higher energies, as they come in, are helping not only themselves but the planet and all life-forms upon it, to hold these higher energies.

那些开始选择与更高能量一起工作的人们，他们所带来的效果，所协助的不仅仅是他们自己，也是在协助这行星与其上的所有生命形态维持更高的能量。

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And we also know that several have happened in the past leading to the extinction of all higher life forms at the time.

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