November 11, 2013 | Stephanie

I believe that humans are causing climate change. But a pause in the increase of global surface temperatures since 1999 has made some sceptical. Now scientists may have found a link between banning chlorofluorocarbons (CFCs) and this pause.

CFCs were banned in 1987 to halt the thinning of the ozone layer. But the ban also seems to have slowed down global warming. This shows that worldwide agreements can help slow climate change. I hope the delegates at climate talks in Warsaw this week keep that in mind.

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spray can

CFCs were common in spray cans and refrigerants.

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Image: Flickr/AMagill

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