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Vanishing Nutrients

Authors: (Scientific American, 2018)


Abstract:

Studies have shown that crops as varied as wheat, maize, soybeans and field peas contain less protein, zinc, and iron when grown under levels of carbon dioxide expected by 2050. Many crops have already suffered losses in these nutrients; one study compared modern plants with historical herbarium specimens and found that levels of all minerals, including zinc, iron and calcium, closely tracked carbon dioxide levels through time.



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