17-45 Segment 1: More Carbon Dioxide, Less Nutritious Food Crops


Rising levels of carbon dioxide in the atmosphere are making crops grow bigger & faster. However, researchers have found that these crops contain significantly lower levels of protein, iron, zinc, and other important nutrients, potentially endangering nutrition for hundreds of millions of people. Experts explain the effect will get worse as CO2 levels continue to rise, and what might be done to combat the problem.


  • Dr. Sam Myers, Principal Research Scientist and Director, Planetary Health Alliance, Harvard University
  • Dr. Kristie Ebi, Director, Center for Health and the Global Environment, Univ. of Washington

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