Wheat gets worse as CO2 rises

You may have thought that the silver lining of rising carbon dioxide levels would be a boost in crop yields. But evidence is mounting that we may trade quantity for quality.

The discovery that staple crops like wheat have less protein when grown in high concentrations of CO2 has already caused concern, but the bad news doesn’t stop there.

Ramping up CO2 also changes the balance of amino acids and several trace elements, says Petra H