The biggest concern is what might happen in the Arctic, says co-author Ed Dlugokencky, a research chemist at the National Oceanic and Atmospheric Administration in Boulder, Colorado.

文章的共同作者，国家海洋和大气管理局的化学家Ed Dlugokencky说最大的影响或许发生在北极。

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T. atmospheric chemist Michael Molina, who shared a 1995 Nobel Prize for helping unravel the tangentially related problem of ozone depletion.

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Then in the early 20th Century, German chemist Fritz Haber invented a high temperature-high pressure technique to convert atmospheric nitrogen into ammonia.

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