A recent study in Global Change Biology reveals that increasing atmospheric carbon dioxide is making essential crops like wheat, rice, and potatoes less nutritious. While plants may grow larger and contain more calories, they are losing critical vitamins and minerals, including protein, zinc, and iron. This phenomenon creates a risk of hidden hunger, where populations receive enough calories to survive but suffer from malnutrition due to nutrient dilution. The research suggests that reducing global emissions is the primary way to prevent further loss of nutritional value in the world's food supply.
