通过研究冰层之间化学性质各异的冰水，研究者们可以追溯古代大气、生态系统、森林大火、地震和日照的变化情况。

In layer upon layer of chemically distinctive water are traces of past atmospheres and ecosystems, forest fires and earthquakes and solar variation.

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现在，研究者们正在构建过去十万年间大气中二氧化碳的含量水平。

The researchers are working to construct a record of carbon dioxide levels in the atmosphere over the last 100, 000 years.

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研究者希望下一步研究当工程师往深层地面注射来自发电厂的二氧化碳时，会有什么情况发生，试图阻止二氧化碳进入大气中。

The researchers next want to look into what happens when engineers inject liquid carbon dioxide from power plants deep underground in an attempt to keep the carbon from entering the atmosphere.

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