Surging concentrations of carbon in the atmosphere, caused largely by burning fossil fuels, have produced potent changes in the way plants grow — from increasing their sugar content to depleting essential nutrients like zinc. Experts fear the degradation of Earth’s food supply will cause an epidemic of hidden hunger, in which even people who consume enough calories won’t get the nutrients they need to thrive.
Processed foods beat them to it?
Processed foods are nutritionally problematic for poor people in rich countries, yes. Poor people in poor countries get more than half their calories from stuff like rice or beans.
But the world doesn’t like to care about the poors.