一个世纪前，化学家斯万特·阿伦尼乌斯就人类影响地球气候的可能性展开了最早的辩论之一。
A century ago, chemist Svante Arrhenius started one of the first debates over the potential for humans to influence the planet's climate.
阿伦尼乌斯计算了二氧化碳在地球大气层内的蓄热能力，但是其他化学家对此有异议。
Arrhenius calculated the capability of carbon dioxide to trap heat in the Earth's atmosphere, but other chemists disagreed.
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