Worries grow that climate change will quietly steal nutrients from major food crops

Increasing carbon dioxide tinkers with plant chemistry in ways not well understood

researchers measuring wheat

CROP FUTURES  Experiments using circles of white pipes blowing extra carbon dioxide over crops suggest that certain nutrients may dwindle in crops grown in a carbon-enhanced future atmosphere. Here, researchers in Arizona measure the growth of wheat.

Jack Dykinga/USDA, Flickr (CC BY 2.0)

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