The great nutrient collapse
I think it's great that we have people researching this. However, what worries me are not the results but how we are going to deal with them. As a species we have to cope with the fact that the climate is changing, we won't reverse that so easily. This is a fact. I'd rather talk about how to overcome the obstacles exposed by this study not only the mere fact that our food is changing "for the worse". Finally, I believe for many parts of the world I suppose it isn't as bad as portrait to have a higher carbohydrate share in their meals.