Rising CO2 levels to cut key nutrients in global crops

Boulder Weekly: New research studying 41 strains of six different crops on three continents that was published May 7 in the scientific journal, Nature, shows that as concentrations of atmospheric carbon dioxide increase, the nutritional content of key food crops will drop, exacerbating hunger woes for millions of people worldwide. In some crops, concentrations of nutrients could drop by as much as 10 percent when CO2 levels rise to 500 parts per million by mid-century. Harvard University public health researcher......

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