Redorbit: Grains, legumes and other crops that provide a large percentage of the world with most of their dietary zinc and iron will have dramatically reduced concentrations of those nutrients by 2050 due to rising levels of atmospheric carbon dioxide, according to a new study led by Harvard School of Public Health (HSPH).
The researchers studied multiple varieties of wheat, rice, field peas, soybeans, maize and sorghum grown in fields with atmospheric carbon dioxide levels comparable to those expected...